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Seasonal thermal energy storage ( STES ), also known as inter-seasonal thermal energy storage, [ 1] is the storage of heat or cold for periods of up to several months. The thermal energy can be collected whenever it is available and be used whenever needed, such as in the opposing season. For example, heat from solar collectors or waste heat ...
In summer, ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature by increasing evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the ...
This temperature equates roughly to the average annual air temperature of the chosen location, usually 7–12 °C (45–54 °F) at a depth of 6 metres (20 ft) in the northern US. Because this temperature remains more constant than the air temperature throughout the seasons, ground source heat pumps perform with far greater efficiency during ...
Roofs receive the majority of the solar radiation delivered to a house. A cool roof, or green roof in addition to a radiant barrier can help prevent your attic from becoming hotter than the peak summer outdoor air temperature [13] (see albedo, absorptivity, emissivity, and reflectivity). Windows are a ready and predictable site for thermal ...
Between 1971 and 2000, average summer temperatures rose by 1.7 degrees Fahrenheit in the U.S., and by 2.7 degrees across much of the West. Those unwelcome facts have left many residents scrambling ...
Radiative cooling. In the study of heat transfer, radiative cooling[ 1][ 2] is the process by which a body loses heat by thermal radiation. As Planck's law describes, every physical body spontaneously and continuously emits electromagnetic radiation .
The average cooling potential of tropical climates varies between 10 and 40 W m 2, significantly lower than hot and dry climates. [ 5 ] For example, the cooling potential of most of southeast Asia and the Indian subcontinent is significantly diminished in the summer due to a dramatic increase in humidity, dropping as low as 10–30 W/m 2 .
The typical range for conventional boilers is to vary the supply water temperature from 60 to 82 °C (140 to 180 °F) as the outside temperature varies from 18 to −18 °C (64 to 0 °F). Buildings cool down slowly when the outdoor temperature is moderate, and cool more rapidly when the outdoor temperature is colder. Hot water reset reduces the ...
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