If you find more mold or high humidity, install a dehumidification system.
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Could they do what the Vatican did with the Sistine Chapel, and install a dehumidification system?
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It's also quite efficient when it comes to dehumidification (up to 230 pints per hour — pretty decent for a unit this small).
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Along with discovering that there was little foundation, they found that the walls they so loved were wet, requiring them to devise a dehumidification system, a problem that took a year to solve.
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The arena has hired a full-time ice engineer, and a dehumidification system installed for the playoffs last spring will remain in place to start the season, said Steve Rosebrook, general manager of Barclays Center.
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Dehumidification of ventilation and makeup air consumes a great deal of energy worldwide. In all except desert and high- altitude climates, the annual dehumidification load for ventilation air exceeds the annual cooling load for ventilation air by a factor of 2 to 5.Harriman, Brundrett & Kittler (2008) ASHRAE Humidity Control Design Guide, ASHRAE, Atlanta, GA The issue of energy efficiency of dehumidification arises because of regulatory requirements in some nations that demand energy efficiency for buildings’ mechanical systems. According to members of AHRI’s dehumidification product section, the reason for developing Standard 920 was to provide ASHRAE with a neutral and high-quality test method for dehumidification energy efficiency. The committee’s goal was to have ASHRAE include minimum dehumidification efficiency requirements in ASHRAE Standard 90.1.
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To provide a metric that allows estimation of annual rather than instantaneous dehumidification performance of ventilation dehumidification systems, AHRI Standard 920 further defines a test protocol for measuring a system’s “integrated seasonal moisture removal efficiency”. This metric is analogous to the seasonal energy efficiency ratio (SEER) that is used to compare cooling energy efficiency of competing equipment. Like the SEER test methodology, AHRI Standard 920 requires that the dehumidification equipment be tested at several discrete combinations of inlet air temperature and humidity. In the 2015 edition of the standard, four such test conditions are defined.
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"Utrik RO unit a big success"Marshall Islands Journal Jan 17th 2014 Indirect solar desalination by a form of humidification/dehumidification is in use in the seawater greenhouse.
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DOAS Diagram Moisture Removal Efficiency (MRE) is a measure of the energy efficiency of any dehumidification process. Moisture removal efficiency is the water vapor removed from air at a defined inlet air temperature and humidity, divided by the total energy consumed by the dehumidification equipment during the same time period, including all fan and pump energy needed to move air and fluids through the system. Water vapor removal is expressed as pounds or kilograms. Energy is usually expressed as kilowatt hours.
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After inventing extruded polystyrene foam plastic, he started his own company in 1955 and developed, among other things, new insulation materials, air conditioners and dehumidification devices. At his death, Munters had over a thousand patents.
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Most softwood lumber kilns operate below temperature. Hardwood lumber kiln drying schedules typically keep the dry bulb temperature below . Difficult-to-dry species might not exceed . Dehumidification kilns are very similar to conventional kilns in basic construction.
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Arye Kohavi (born 24 June 1967) is an Israeli entrepreneur and innovator. He is the founder of Watergen, which develops water and air dehumidification technologies, and former president & co-CEO of the company. Married with four kids, lives in Neve Monosson, Israel.
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Sopogy, Inc. introduced SopoFlare at Solar Power International 2009 in Anaheim. SopoFlare is the first commercially available Concentrating Solar Power technology designed specifically for rooftop installations. The technology is used to create steam, solar thermal air conditioning, drying, dehumidification, desalination, hot water.
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Since these trains will operate in a tropical climate, they have over-head air-conditioning systems, providing temperature control, ventilation and dehumidification to maximise passenger comfort. The trains are also equipped with LTE-enabled WiFi throughout but currently it has not been turned on yet.
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The solar humidification–dehumidification method (HDH) is a thermal water desalination method. It is based on evaporation of sea water or brackish water and subsequent condensation of the generated humid air, mostly at ambient pressure. This process mimics the natural water cycle, but over a much shorter time frame.
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The solar humidification–dehumidification (HDH) process (also called the multiple-effect humidification–dehumidification process, solar multistage condensation evaporation cycle (SMCEC) or multiple- effect humidification (MEH)The MEH-method (in German with english abstract): Solar Desalination using the MEH method, Diss. Technical University of Munich) is a technique that mimics the natural water cycle on a shorter time frame by evaporating and condensing water to separate it from other substances. The driving force in this process is thermal solar energy to produce water vapor which is later condensed in a separate chamber. In sophisticated systems, waste heat is minimized by collecting the heat from the condensing water vapor and pre-heating the incoming water source.
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Regeneration is normally carried out by the use of a heating coil, such as a water or steam coil, or a direct-fired gas burner. Thermal wheels and desiccant wheels are often used in series configuration to provide the required dehumidification as well as recovering the heat from the regeneration cycle.
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A portable system has an indoor unit on wheels connected to an outdoor unit via flexible pipes, similar to a permanently fixed installed unit. The portable units draw indoor air and expel it outdoors through a single duct. Many portable air conditioners come with heat as well as dehumidification function.
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Schematic representation of a membrane type compressed air dryer. Membrane dryer refers to a dehumidification membrane that removes water vapor from compressed air. Membrane dryers operate on the principle of migration. The compressed air to be dried is passed over a membrane that has a high affinity for water vapor.
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In addition to drainage and automatic pool covers, there are a number of ways to remove humidity in the air that is present with any wet indoor environment. Efficient dehumidification in the indoor pool environment prevents structural damage, lowers energy costs in addition to improving the room's climate to make it a comfortable swimming environment.
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Category D Temporary state pending planned usage by the Navy, will be maintained as-is. Category X Ships stricken from the Naval Vessel Register awaiting disposal. Receives no maintenance except ships on donation hold, which undergo dehumidification and cathodic protection. Category Z This category is for nuclear-powered ships and related support ships pending disposal.
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If refrigerative air-conditioning is employed in a hot, humid climate, then it is particularly important to seal the building envelope. Dehumidification of humid air infiltration can waste significant energy. On the other hand, some building designs are based on effective cross- ventilation instead of refrigerative air-conditioning to provide convective cooling from prevailing breezes.
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Another advantage is energy savings and reduced wear. VAV fan control, especially with modern electronic variable- speed drives, reduces the energy consumed by fans, which can be a substantial part of the total cooling energy requirements of a building. Modulating control of the compressor also reduces wear and delivers further energy savings. A final advantage is increased dehumidification.
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Because VAV air flow is reduced under part-load conditions, air is exposed to cooling coils for a longer time. More moisture condenses on the coils, dehumidifying the air. Thus, although a constant-volume and a single-zone VAV unit maintain the same room temperature, the VAV unit provides more passive dehumidification and more comfortable space conditions.
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Drying times are usually comparable. Heat is primarily supplied by an integral dehumidification unit which also serves to remove humidity. Auxiliary heat is often provided early in the schedule where the heat required may exceed the heat generated by the DH unit. Solar kilns are conventional kilns, typically built by hobbyists to keep initial investment costs low.
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The authority for this definition of moisture removal efficiency is ANSI/AHRI Standard 920, published by the Air Conditioning, Heating and Refrigeration Institute (AHRI).AHRI Standard 920 (2015) - Performance Rating of DX- Dedicated Outdoor Air System Units AHRI is an association of equipment manufacturers. Standard 920 was developed by the group of manufacturing members of AHRI that is concerned with energy efficiency of packaged dedicated outdoor air systems (DOAS equipment).Manufacturer members of the AHRI Dehumidification Section that generated ANSI/AHRI Standard 920-2015 included: Carrier, Dectron, Desert Aire, Greenheck, Modine, Munters, Research Products, and Trane. The standard provides an objective and quantitative basis for rating and comparing dehumidification performance and energy consumption of equipment that dehumidifies incoming ventilation and makeup air as part of a building’s mechanical systems.
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In a tropical climate, it could be helpful for ideal internal conditions to use energy recovery ventilation instead of heat recovery ventilation to reduce the humidity load of ventilation on the mechanical dehumidification system. Although dehumidifiers might be used, heat pump hot water heaters also will act to cool and condense interior humidity (where it can be dumped into drains) and dump the heat into the hot water tank. Passive cooling, solar air conditioning, and other solutions in passive solar building design need to be studied to adapt the Passive house concept for use in more regions of the world. There is a certified Passive House in the hot and humid climate of Lafayette, Louisiana, USA, which uses energy recovery ventilation and an efficient one ton air-conditioner to provide cooling and dehumidification.
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Another novel technique is cloud seeding, either by artificial means or through the action of cloud-seeding bacteria that live on vegetation (e.g. Pseudomonas syringae). Another, "atmospheric water generation" or air to water, uses dehumidification and is used by the military for potable water generation. However this technology uses 200 times more energy than desalination, making it unsuitable for large scale desert greening.
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Building Science Corporation. March 10, 2011 # controlling indoor moisture at its sources through exhaust ventilation, # having correct HVAC design for efficient air dehumidification; # effective vapor barrier wall sealing; # proper insulation; # using an impervious vapor barrier (vapor check) on the warm side of the insulation, i.e., inside the assembly on a heated building and outside on a cooled building.McArthur, Hugh, and Duncan Spalding.
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The company works both nationally and internationally, where they have established factories and sales companies . The company's two main areas are Telecommunications and Heating, Ventilation and Air Conditioning (HVAC). Within the Telecom business unit, the company is a supplier of cooling solutions for the Telecom networks suppliers and network operators. Within the HVAC business unit, there are several branches: defense, dehumidification, swimming pool ventilation, and residential ventilation.
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The tubes also had caps on them. The tubes were usually made of metal or ceramics, but bamboo and other containers have also been found. The tubes were buried with ancient mirrors, coins, swords and jewels, and were buried with dehumidification substances like charcoal. The sutra tubes were often buried in sacred places such as mountain summits and on the grounds of Shinto temples.
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Variable air volume (VAV) is a type of heating, ventilating, and/or air- conditioning (HVAC) system. Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant temperature. The advantages of VAV systems over constant-volume systems include more precise temperature control, reduced compressor wear, lower energy consumption by system fans, less fan noise, and additional passive dehumidification.
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There are several commercially available systems that blow air through a desiccant impregnated medium for both the dehumidification and the regeneration cycle. The solar heat is one way that the regeneration cycle is powered. In theory packed towers can be used to form a counter-current flow of the air and the liquid desiccant but are not normally employed in commercially available machines. Preheating of the air is shown to greatly enhance desiccant regeneration.
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The facility can accommodate a second sheet of ice if desired later, as both refrigeration and dehumidification are sized for additional capacity. As of summer 2017 it was retro-fitted with LED-lighting over the ice and stands. The arena is home to the 5-time Clark Cup Champion Dubuque Fighting Saints of the USHL. Owned by the City of Dubuque and operated by the non-profit Dubuque Community Ice and Recreation Center, Inc.
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It became imperative to clean sculpture immediately, before it fully absorbed the oil. Flaking sculpture was sprayed with a silicate mixture, while wooden pieces were treated with insecticides and toxic gases to kill insects and prevent future infestation. Weaponry, like firearms and swords, were taken apart, cleaned with paraffin, and finally lubricated to prevent future rusting. Bronze objects were kept in dehumidification chambers for a few weeks and cleaned with distilled water or polished.
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A variety of wood drying kiln technologies exist today: conventional, dehumidification, solar, vacuum and radio frequency. Conventional wood dry kilns (Rasmussen, 1988) are either package-type (sideloader) or track-type (tram) construction. Most hardwood lumber kilns are sideloader kilns in which fork trucks are used to load lumber packages into the kiln. Most softwood lumber kilns are track types in which lumber packages are loaded on kiln/track cars for loading the kiln.
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In dehumidification type air conditioners, waste water is a by-product, caused by air cooling and condensation, like an atmospheric water generator (AWG). The water, in this case, is not purified. Refrigeration air conditioning equipment usually reduces the absolute humidity of the air processed by the system. The relatively cold (below the dewpoint) evaporator coil condenses water vapor from the processed air, much like an ice-cold drink will condense water on the outside of a glass.
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DOAS system with Heat Recovery wheel and Passive Dehumidification A dedicated outdoor air system (DOAS) is a type of heating, ventilation and air- conditioning (HVAC) system that consists of two parallel systems: a dedicated system for delivering outdoor air ventilation that handles both the latent and sensible loads of conditioning the ventilation air, and a parallel system to handle the (mostly sensible heat) loads generated by indoor/process sources and those that pass through the building enclosure.
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The SpaceX Dragon 2 human- rated spacecraft uses Nafion membranes to dehumidify the cabin air. One side of the membrane is exposed to the cabin atmosphere, the other to the vacuum of space. This results in dehumidification since Nafion is permeable to water molecules but not air. This saves power and complexity since cooling is not required (as needed with a condensing dehumidifier), and the removed water is rejected to space with no additional mechanism needed.
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Dehumidification work on the Forth Road Bridge was successful in halting the corrosion of the main cables, so there is now no requirement to close the existing Forth Road Bridge to traffic. The Forth Road Bridge will, as a result, be incorporated into the road network alongside the new bridge, the Queensferry Crossing, and will provide a dedicated public transport crossing, remaining available as a diversionary route in the event the new bridge has to be closed.
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Dehumidification (air drying) in an air conditioning system is provided by the evaporator. Since the evaporator operates at a temperature below the dew point, moisture in the air condenses on the evaporator coil tubes. This moisture is collected at the bottom of the evaporator in a pan and removed by piping to a central drain or onto the ground outside. A dehumidifier is an air-conditioner-like device that controls the humidity of a room or building.
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In January 2006, the Scottish Executive completed a third-party audit on the bridge which concluded that FETA had performed the initial internal inspection and cable strength calculation in accordance with accepted practice. The report suggested that traffic restrictions could be required by 2013. Several actions were taken to increase the bridge's lifespan. These included a dehumidification programme that slowed the rate of corrosion in the main cables by keeping air in the voids between the main cables' strands below 40% humidity.
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There is a separate system to provide air for ventilation, dehumidification, and potentially additionally cooling. Radiant systems are less common than all-air systems for cooling, but can have advantages compared to all-air systems in some applications. Since the majority of the cooling process results from removing sensible heat through radiant exchange with people and objects and not air, occupant thermal comfort can be achieved with warmer interior air temperatures than with air based cooling systems. Radiant cooling systems potentially offer reductions in cooling energy consumption.
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During the first months immediately after construction, minor problems with interior humidity may be evident as the concrete cures, which can damage the drywall. Dehumidification can be accomplished with small residential dehumidifiers or using the building's air conditioning system. Depending on the experience of the contractor and their quality of work, improperly installed exterior foam insulation could be easy access for groundwater and insects. To help prevent these problems, some manufacturers make insecticide-treated foam blocks and promote installation of drainage sheeting and other methods for waterproofing.
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The H-valve position can be adjusted by the crew to increase or reduce the amount of bleed air cooling at the heat exchanger. A refrigeration-type cooling system is used for cooling and dehumidification while the aircraft is on the ground or operating at altitudes below 18 000 feet. The refrigeration system consists of a compressor, receiver dehydrator and evaporative cooler located above the baggage compartment. The Learjet 25 cabin is pressurized to enable high altitude operations without the use of supplemental oxygen.
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After 15 years, the cables have no rust. They were scheduled for a 15 million DKK paint job, but due to corroding cables on other bridges, the decision was made to instead install a 70 million DKK sealed de-humidifying system in the cables, Carried out by UK Engineering firm, Spencer Group, with help from Danish Subcontractors, Davai who provided the manpower, and Belvent A/S who provided the Dehumidification System.Andersen, Ulrik. "Drying the Great Belt Bridge cables" (in Danish) Ingeniøren, 20 September 2013.
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In the 2000s, Lienhard refocused his research on the problem of clean water supply and scarcity, particularly around desalination technologies. He approached this area through his background in thermal engineering and transport phenomena, making energy efficiency a central aim. His group's desalination research has spanned a broad range of topics including humidification-dehumidification, forward and reverse osmosis, membrane distillation, produced water, electrodialysis, nanofiltration, solar desalination, and thermophysical properties. The seawater thermophysical property database developed by his group has been widely used by other researchers.
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Other improvements to the arena during phase 1 will include a new dasher board system and a new seamless glass system, which are often found in new arenas. During the summer of 2012, phase 2 of the renovations began. These included a new glass wall on the Foster Street side of the building; major improvements to heating, ventilation and cooling systems; upgrades to restrooms and concessions; and a new dehumidification system. In 2018/2019, a plan of $37 million renovations were announced for the next four years.
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Inlet air temperature is expressed in either degrees Fahrenheit or degrees Celsius. Inlet air humidity may be expressed in several ways, most commonly as the humidity ratio of the inlet air; the weight of water vapor in the air, compared to the weight of the dry air that contains it. An example of the MRE of a dehumidification system could be: 4.4 lb/kWh @ 85 °F, 140 gr/lb. Using the SI system of units, that same MRE would be 2.0 kg/kWh @ 30 °C, 20.0 g/kg.
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Even if condensate is drained, a modified air conditioner is still less efficient than a single-purpose appliance with a design optimized for dehumidification. Dehumidifiers are designed to pass air directly over the cooling coils and then the heating coils in a single efficient pass through the device. In addition, most air conditioners are controlled by a thermostat which senses temperature, rather than a humidistat that senses humidity and is typically used to control a dehumidifier. A thermostat is not designed for the control of humidity, and controls it poorly if at all.
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In addition to its standard rental storage units, the company also offers units with climate control and its Dri-guard dehumidification system. There are also larger units for items like boats, cars, and other large property. Most facilities offer a variety of amenities and features, keypad security systems that restrict floor access to approved users or property access to customers only, security systems that monitor activity on the facility grounds, free truck use, and moving and storage merchandise. Some facilities also offer individual door alarms, intercom systems, and conference rooms for business meetings.
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It was first necessary to create additional space and to dehumidify the crypt. After completion of the New Vault in 1960 and the transfer of 26 tombs from the overflowing Tuscan Vault, the work of dehumidification could begin. Also, a workshop was created in the south end of the Tuscan Vault where highly skilled artisans could work on selected tombs temporarily moved there for restoration. In 2003 remodelling of the ground-level visitor facilities took place to create a new visitor entrance and make the crypt accessible to disabled visitors.
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The hot water or steam is provided by a central boiler, and the chilled water is provided by a central chiller. Downstream temperature sensors are typically used to monitor and control "off coil" temperatures, in conjunction with an appropriate motorized control valve prior to the coil. If dehumidification is required, then the cooling coil is employed to over-cool so that the dew point is reached and condensation occurs. A heater coil placed after the cooling coil re-heats the air (therefore known as a re-heat coil) to the desired supply temperature.
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Belfor branch office, Ypsilanti, Michigan Belfor is a multinational corporation that offers recovery and restoration services to restore structures damaged as a result of fires, floods and natural disasters. It's also offers recovery services, including fire damage restoration, smoke and soot removal, storm damage restoration, water extraction, structural dehumidification, reconstruction and general contracting, mold removal and remediation, corrosion control, air duct cleaning, contents restoration, document and media recovery, electronics restoration, machinery and equipment decontamination, machinery and equipment rebuilding and repair, semiconductor tool decontamination, environmental, marine and offshore restoration, and consulting services. BELFOR USA Group is a privately owned subsidiary of BELFOR Holdings Inc.
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However, since all components of the dehumidifier are in the same room, no heat energy is removed. Instead, the electric power consumed by the dehumidifier remains in the room as heat, so the room is actually heated, just as by an electric heater that draws the same amount of power. In addition, if water is condensed in the room, the amount of heat previously needed to evaporate that water also is re-released in the room (the latent heat of vaporization). The dehumidification process is the inverse of adding water to the room with an evaporative cooler, and instead releases heat.
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However, it is wrong to expect better performance when all indoor units are turned on at the same time, since the total capacity of the whole system is limited by the capacity of the outdoor unit. Simply put, the outdoor unit will distribute all its power to all operating indoor units in such a way that some of the rooms may not have a very comfortable temperature level. However, the calculation of the total power is not simple, since it takes into account not only the nominal power of the units, but also the cooling capacity, heating, dehumidification, humidification, venting, etc.
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Indirect solar desalination employs two separate systems; a solar collection array, consisting of photovoltaic and/or fluid-based thermal collectors, and a separate conventional desalination plant. Production by indirect method is dependent on the efficiency of the plant and the cost per unit produced is generally reduced by an increase in scale. Many different plant arrangements have been theoretically analyzed, experimentally tested and in some cases installed. They include but are not limited to multiple-effect humidification (MEH), multi-stage flash distillation (MSF), multiple-effect distillation (MED), multiple-effect boiling (MEB), humidification–dehumidification (HDH), reverse osmosis (RO), and freeze-effect distillation.
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A dehumidification chamber can be an unvented system (closed loop) or a partially vented system which uses a heat pump to condense moisture from the air using cold side of the refrigeration process (evaporator.) The heat thus gathered is sent to the hot side of the refrigeration process (condenser) to re-heat the air and returns this drier and warmer air inside the kiln. Fans blow the air through the piles as in a normal kiln. These kilns traditionally operate from 100 °F to 160 °F and use about half the energy of a conventional kiln.Multiple authors.
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Proceedings of the Healthy Buildings conference 2000, Espoo, Finland, 6–10 August 2000.Eijdems, H.H., Boerrsta, A.C., Op ‘t Veld, P.J., Low- temperature heating systems: Impact on IAQ, thermal comfort and energy consumption, the Netherlands Agency for Energy and the Environment (NOVEM) (c.1996) By removing the sensible heating load from the total HVAC (Heating, Ventilating, and Air Conditioning) load, ventilation, filtration and dehumidification of incoming air can be accomplished with dedicated outdoor air systems having less volumetric turnover to mitigate distribution of airborne contaminates. There is recognition from the medical community relating to the benefits of floor heating especially as it relates to allergens.
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Most modern air-conditioning systems feature a dehumidification cycle during which the compressor runs while the fan is slowed as much as possible to reduce the evaporator temperature and therefore condense more water. When the temperature falls below a threshold, both the fan and compressor are shut off to mitigate further temperature drops; this prevents moisture on the evaporator from being blown back into the room. When the temperature rises again, the compressor restarts and the fan returns to low speed. Occasionally, to thaw any ice produced, the fan runs with the compressor shut down; this function is less effective when ambient temperatures are low.
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An air handling unit used for the heating and cooling of air Air supply to a building is generally performed by an air handling unit. The process may include for filtering, heating, cooling, humidification, or dehumidification, all of which processes consume energy. Since the fresh air demand for the building occupants may be less than that is required for air conditioning purposes, it would be wasteful if 100% fresh air were used, with wholesome treated air rejected to the atmosphere in its place. Therefore, mixing is used to balance the needs between the occupants requirements for fresh air and the air conditioning process for the building.
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Instead, the electric power consumed by the dehumidifier remains in the room as heat, so the room is actually heated, just as by an electric heater that draws the same amount of power. In addition, if water is condensed in the room, the amount of heat previously needed to evaporate that water also is re-released in the room (the latent heat of vaporization). The dehumidification process is the inverse of adding water to the room with an evaporative cooler, and instead releases heat. Therefore, an in-room dehumidifier always will warm the room and reduce the relative humidity indirectly, as well as reducing the humidity directly by condensing and removing water.
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Yost has undergone a number of renovations to modernize its facilities and improve amenities for spectators. In 1992, a $1 million renovation project replaced the rink floor and refrigeration unit and included the installation of a desiccant dehumidification system. A $5.5 million renovation project completed prior to the 1996–97 season brought new dasherboards with tempered glass, improved lighting and sound systems, state- of-the art ceiling insulation, and the replacement of end zone scoreboards with fully automated boards on the east and west sides. First floor remodeling included a new pro shop, modernized concession stands and restrooms, new locker rooms and an improved lobby, complete with trophy showcases and ornate woodwork.
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The tools were held in a state of readiness, to be shipped nationwide to manufacturers in the event of a national emergency. In 1952, the facility was renamed the United States Storage Facility- Atchison Caves. The Army converted two of the largest mines (more than of underground space) into storage areas with the installation of concrete block walls, concrete floors, electrical lighting, sump pumps, air handling equipment and an extensive dehumidification system. To facilitate moving the large machine tools in and out of the storage facility a truck receiving dock was built near the entrance, a railroad spur and dock were constructed and dock facilities for barges were established on the Missouri River.
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This reduces the water content of the outlet air, which is then compressed again in the next stage cylinder, cooled again, and the water that condenses out is again removed by the next separator. After final stage separation the relatively dry air passes through the filter to remove yet more water, and any other contaminants that the filter media will adsorb. The efficiency of dehumidification and filtration depends on significant compression and limited flow velocity, which requires back-pressure at the final stage outlet to resist flow when the filling pressure is low. The back- pressure valve provided in the outlet from the final filter stack affects how effectively the filter works.
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Earth cooling tubes are much less effective in hot humid climates (like Florida) where the ambient temperature of the earth approaches human comfort temperature. The higher the ambient temperature of the earth, the less effective it is for cooling and dehumidification. However, the earth can be used to partially cool and dehumidify the replacement fresh air intake for passive-solar thermal buffer zone areas like the laundry room, or a solarium / greenhouse, especially those with a hot tub, swim spa, or indoor swimming pool, where warm humid air is exhausted in the summer, and a supply of cooler drier replacement air is desired. Not all regions and sites are suitable for earth-air heat exchangers.
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In the summer, the inside air cools the warmer incoming supply air to reduce ventilation cooling costs.EERE Consumer's Guide: Energy Recovery Ventilation Systems This low-energy fan-and-motor ventilation system can be cost-effectively powered by photovoltaics, with enhanced natural convection exhaust up a solar chimney - the downward incoming air flow would be forced convection (advection). A desiccant like calcium chloride can be mixed with water to create a recirculating waterfall that dehumidifies a room using solar thermal energy to regenerate the liquid, and a PV-powered low-rate water pump to circulate liquid.Liquid Desiccant Waterfall for attractive building dehumidification Active solar cooling wherein solar thermal collectors provide input energy for a desiccant cooling system.
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Since most building materials are permeable and many joints are not completely sealed, it's critical in controlling interstitial condensation to control indoor moisture at its sources (venting out shower vapor), through HVAC dehumidification, ventilation and by adding an impermeable vapor barrier in the interstitial cavity. In addition, since the air in interstitial cavities can communicate with interior spaces through tiny cracks and unsealed joints, any airborne mold, aerosolized fungal fragments and bacteria growth in the interstitial cavity can travel into the building's air to then be breathed in by building occupants. Interstitial condensation is differentiated from surface condensation in buildings which is known as "cold-bridge condensation" or "warm front condensation"Tim Hutton. "Condensation".
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These lines represent the work done by the coil on the air stream (its change in enthalpy). This is significant because, given a constant condenser temperature and equivalent change in enthalpy, the higher the evaporator coil temperature, the more efficient is the Carnot refrigeration cycle and the greater the energy efficiency a particular system can deliver. Common dehumidification strategies include: reheating (electric or hot-gas bypass), where sensible heat is added to the air leaving the equipment; recuperative heat (run-around coils or heat pipes), where sensible heat is transferred from the return air to the supply air; or the Cromer cycle, where the latent heat of moisture sorption and evaporation is transferred from the return air to the supply air.
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In a real-world corollary to the fiction concerning the Volkshalle, the indoors condensate characteristic imagined for the Volkshalle has actually been observed happening within the Kennedy Space Center's immense Vehicle Assembly Building, if its own massive dehumidification systems were not turned on. The Volkshalle appears in the alternate history novel In the Presence of Mine Enemies by Harry Turtledove, being used for the lying in state for the deceased Führer, Kurt Haldweim. The Volkshalle's image appears in the video game Wolfenstein: The New Order, in an alternate 1960s in which (like the Fatherland novel) Nazi Germany won World War II. Computer-generated special effects are used to depict the Volkshalle in an alternate history Berlin in the TV production of The Man in the High Castle. Multiple scenes in seasons two to four take place inside various parts of the Volkshalle.
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For primary defogging, heat is generally provided by the vehicle's engine coolant via the heater core; fresh air is blown through the heater core and then ducted to and distributed over the interior surface of the windshield by a blower. This air is in many cases first cooled down and dehumidified by passing it through the vehicle's operating air conditioning evaporator. Such dehumidification, when followed by a reheating, makes the defogging more effective and faster, for the dry warm air has a greater capacity of absorbing water from the glass at which it is directed (with respect to the moist warm air provided by the heater alone, and the dry cold air provided by the air conditioning system alone). However, whenever the vehicle is equipped with an air conditioning system, care must be taken to keep it in an operational state for the primary defogger to operate optimally.
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The NFL pitch is placed 1.6 metres beneath the natural turf surface, and the change in height when the surface is switched also produces ideal sightlines for the front row for both codes (NFL team personnel tend to stand pitchside in allocated areas which would block the view of the front row if the pitch is not lower in NFL games). Grow lights suspended on trusses over the pitch The stadium features the world's first integrated grow lighting system over the pitch. Grow lights are suspended on six 70-metre trusses to encourage the growth of the grass in the shaded areas of the stadium, and they can be folded away under the North Stand when not in use. The grass can also be maintained for up to 5 days with artificial lighting, air ventilation, dehumidification and irrigation systems when the pitch is retracted under the south podium.
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National Defense Authorization Act of 2007. p. 68. Retrieved 26 November 2006. Congress ordered that the following measures be implemented to ensure that, if need be, Iowa and Wisconsin could be returned to active duty: #Iowa and Wisconsin must not be altered in any way that would impair their military utility; #The battleships must be preserved in their present condition through the continued use of cathodic protection, dehumidification systems, and any other preservation methods as needed; #Spare parts and unique equipment such as the 16-inch gun barrels and projectiles be preserved in adequate numbers to support Iowa and Wisconsin, if reactivated; #The navy must prepare plans for the rapid reactivation of Iowa and Wisconsin should they be returned to the navy in the event of a national emergency. These four conditions closely mirrored the original three conditions that the Nation Defense Authorization Act of 1996 laid out for the maintenance of Iowa and Wisconsin while they were in the Mothball Fleet.
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The Forth Road Bridge underwent a comprehensive structural survey between 2003 and 2005 after suspension bridges of similar design and age in the United States were found to be suffering from corrosion in their main suspension cables. The survey results showed significant corrosion and an accompanying loss in strength of between 8 and 10% in the cables on the Forth Bridge. The rate of corrosion and weakening of the main cables would have required the bridge to close to HGV traffic some time around 2014 and then close to all traffic by 2019, so plans were drawn up to build a replacement crossing, to run parallel to the existing road bridge between Lothian and Fife. Dehumidification equipment was installed to remove moisture from the inside of the main suspension cables, in an attempt to slow or halt the corrosion, but with no guarantee of success, the Forth Estuary Transport Authority and Scottish Government were left with no option but to plan the construction of a new crossing.
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Congress had ordered that the following measures be implemented to ensure that Wisconsin could be returned to active duty if needed: # She must not be altered in any way that would impair her military utility; # The battleship must be preserved in her present condition through the continued use of cathodic protection, dehumidification systems, and any other preservation methods as needed; # Spare parts and unique equipment such as the gun barrels and projectiles be preserved in adequate numbers to support Wisconsin, if reactivated; # The Navy must prepare plans for the rapid reactivation of Wisconsin should she be returned to the Navy in the event of a national emergency. These four conditions closely mirror the original three conditions that the Nation Defense Authorization Act of 1996 laid out for the maintenance of Wisconsin while she was in the Mothball Fleet. It was unlikely that these conditions would impede a plan to turn Wisconsin into a permanent museum ship at her berth in Norfolk. On December 14, 2009 the US Navy officially transferred Wisconsin to the city of Norfolk, ending the requirement for the ship to be preserved for possible recall to active duty.
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