Dehumidification >> Calculate Space In A Water Damaged Room For A Dehu

Compression Ratio Dehumidification APPLICATIONS OF TECHNOLOGY: Commercial and residential buildings ADVANTAGES: Reduces indoor moisture to inhibit mold growth and moisture damage Energy efficient—air does not have to be reheated prior to delivery No refrigerant Calculate Space In A Water Damaged Room For A Dehu or desiccant material required ABSTRACT.

Berkeley Lab researchers have developed a technology that relies on the psychrometric properties of compressed air to dehumidify indoor air to comfortable levels. The technology is more energy efficient that current dehumidification approaches because it does not require a reheat cycle prior to delivering conditioned air, Calculate Space In A Water Damaged Room For A Dehu as in HVAC units with dehumidification cycles. 

In addition, the technology does not require materials that may require special handling such as refrigerants or desiccants, Calculate Space In A Water Damaged Room For A Dehu the latter of which have limited capabilities and require regeneration. The Compression Ratio Dehumidification technology will address a growing concern since energy efficiency standards became broadly adopted nationwide. 

These standards, such as California’s Title 24, limit the amount of outdoor air entering a space. While this approach reduces energy use by lowering an HVAC unit’s heating or cooling load, it removes a natural source of dehumidification. As a result, Calculate Space In A Water Damaged Room For A Dehu commercial buildings have seen a rise in moisture, which leads to mold growth, water damage, personal discomfort and a potentially-related increase in asthma attacks. 

In time, as more homeowners install energy efficient windows that limit the introduction of outside air, similar observations will be made in residential properties. Building owners will want to address moisture issues with an energy efficient technology, Calculate Space In A Water Damaged Room For A Dehu such as the Berkeley Lab invention, not one that effectively cancels out the energy efficient upgrades that have been made already. 

Ventilation Controller for Improved Indoor Air Quality IB-2715 APPLICATIONS OF TECHNOLOGY: Heating, air conditioning, ventilation (HVAC) Indoor air quality ADVANTAGES: Reduces residential energy use Provides excellent indoor air quality with high efficiency Compatible with various heating/cooling/dehumidifying systems Appropriate in different climates Calculate Space In A Water Damaged Room For A Dehu and areas with or without air pollution Low manufacturing cost.

Iain Walker and colleagues at Berkeley Lab have developed a dynamic control system for whole-house ventilation fans that provides maximal air quality while reducing by 18-44% the energy spent on ventilation. The system, Calculate Space In A Water Damaged Room For A Dehu the Residential Integrated Ventilation Energy Controller (RIVEC), coordinates the operation of a whole-house exhaust fan in response to other exhaust and supply fans in the house and to extremes of indoor-outdoor temperature difference. 

The system can be used in various climates and programmed according to the size and number of people in a home. As newer homes have become more airtight to reduce heating and air-conditioning use, Calculate Space In A Water Damaged Room For A Dehu they have required more mechanical ventilation to maintain a standard of indoor air quality. These ventilation needs are met by whole-house fans that, in most cases, are operated 24 hours a day and not optimized for energy efficiency. 

The RIVEC receives input from exhaust fans other than the whole-house fan, such as those in bathrooms, kitchens, and clothing dryers. When these fans are on, the RIVEC turns down, or off, Calculate Space In A Water Damaged Room For A Dehu the whole-house fan because it is temporarily unneeded. An algorithm in the system also slows or stops the whole-house fan at the times of day with the greatest discrepancy between indoor and outdoor temperatures (peak hours for heating or air-conditioning). 

This further reduces energy waste while maintaining air quality. The algorithm can adjust for the operation of heat recovery ventilators (HRVs) and economizers—devices that, Calculate Space In A Water Damaged Room For A Dehu respectively, exchange heat between incoming and outgoing air and draw cool air indoors during the night in hot climates. 

The RIVEC can be adjusted to decrease ventilation when outdoor pollutant levels are high. The scientists tested the system in a warm climate (Central Valley, California) in a home with three bathroom fans, Calculate Space In A Water Damaged Room For A Dehu a kitchen fan, a dryer exhaust, and an economizer. 

This field test, reported to the California Energy Commission, demonstrated that the air quality was maintained above the industry recognized standard of the American Society of Heating, Refrigeration, Calculate Space In A Water Damaged Room For A Dehu and Air-conditioning Engineers (ASHRAE; Standard 62.2, updated in 2007), which has been adopted in several states. 

First Diode for Thermal Management of Micro and Macro Devices SEM images of three different BNNTs after deposition of C9H16Pt. The rectification measured was 7, 4, and 3%. The arrows denote the direction of heat flow, Calculate Space In A Water Damaged Room For A Dehu indicating where the thermal conductance is higher than that of the opposite direction. 

APPLICATIONS OF TECHNOLOGY: Thermal management for: microelectronic devices solar cells and solar energy management systems refrigerators hybrid biological/inorganic systems nanoscale calorimeters Information transport Calculate Space In A Water Damaged Room For A Dehu and processing Molecular motors ADVANTAGES: First solid state device to direct heat flow Initial tests demonstrate thermal rectification of 7 percent Can accommodate high macroscopic thermal current densities.

Alex Zettl, Arun Majumdar and colleagues at Berkeley Lab have invented the first solid state thermal rectifier. The device consists of a Calculate Space In A Water Damaged Room For A Dehu boron nitride nanotube (BNNT) loaded at one end with a high mass density material - specifically, trimethyl cyclopentadienyl platinum (C9H16Pt). The researchers achieved thermal rectifications as high as 7 percent at room temperature. 

Mass loaded carbon nanotubes (CNTs) were found to display thermal rectification of 2 percent. The Berkeley Lab nanoscale solid state device is to thermal systems what the Calculate Space In A Water Damaged Room For A Dehu diode is to electronics. Controlling the direction of heat flow could lead to radical improvements in thermal management across a range of products. 

For example, the Berkeley Lab thermal diode might prevent overheating in microelectronic devices, Calculate Space In A Water Damaged Room For A Dehu currently a barrier to significant size reductions. Since the technology can be designed to handle high macroscopic thermal current densities, it may also lead to more efficient refrigerators, solar cells, and buildings. 

The new thermal diode could also result in computing systems that use phonons instead of Calculate Space In A Water Damaged Room For A Dehu, or in addition to, electrons for manipulating and transporting information bits. APPLICATIONS OF TECHNOLOGY: Windshields and windows Solar panels Lenses for cameras, endoscopes, laparoscopes, and other optical devices Eyewear – goggles and glasses Dental mirrors 

ADVANTAGES: Stable over time Inexpensive Does not require UV-light activation Excellent optical properties (high transmittance; low reflectance and refractive index) Self cleaning ABSTRACT: Samuel Mao Calculate Space In A Water Damaged Room For A Dehu and a team of scientists at Berkeley Lab have created super hydrophilic nanostructures that can be used as a stable antifogging agent when applied to glass. 

The Berkeley Lab invention does not require UV irradiation and is nontoxic. In tests, Calculate Space In A Water Damaged Room For A Dehu the technology continued to function efficiently after more than 20 successive wetting-dewetting cycles. The optical properties of the coating are superior to those of other formulations in demonstrating higher transmittance (>90%) and reduced reflectance (6-8% over wavelengths of 300-2,500 nm). 

Tests for hydrophilicity demonstrated that water droplets spread within a couple of hundred milliseconds on a glass surface coated with the nanostructures; Calculate Space In A Water Damaged Room For A Dehu the droplets reached an equilibrium contact angle of 1°, as opposed to 34° for uncoated glass. The angular nanostructure of the particles provides the coating with self-cleaning properties. 

Because nanoparticles extend from the surface at low angles everywhere, water vapor can infiltrate the spaces formed by nanoparticle overhangs, Calculate Space In A Water Damaged Room For A Dehu dislodging dust and grime from the surface. This is accomplished without UV activiation or any other catalytic process. 

Existing antifogging coatings prevent the formation of water droplets on surfaces, Calculate Space In A Water Damaged Room For A Dehu but are effective only for a limited amount of time because they evaporate, can be accidently wiped-off, or lose their hydrophilicity over time. They also require regular reactivation with UV (ultraviolet) irradiation and many of them are toxic, preventing their use on dental and surgical devices.

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