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Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...
Dealing with the 90s across Florida, with feels-like temperatures of more than 100, is never fun. Unless we work outside, many of us just like to stay inside — and to turn down the thermostat.
The building balance point temperature is the outdoor air temperature when the heat gains of the building are equal to the heat losses. [1] Internal heat sources due to electric lighting, mechanical equipment, body heat, and solar radiation may offset the need for additional heating although the outdoor temperature may be below the thermostat set-point temperature.
The original cold weather clothing was made of furs. The fibers of the fur trapped insulating air, lanolin on the fur repelled water. Knitted wool is an effective insulator when dry, but ineffective when wet. Goose down is the lightest insulator, and still used today. Its quality, called loft is a measure of its low density. It is ineffective ...
Credit - Photo-Illustration by TIME (Source Image: Courtesy Colin Wessells) Colin Wessells is the founder and co-CEO of Natron Energy, a company making sodium-ion batteries to power clean ...
Find out why Jack Dangermond made the 2024 TIME100 Climate list
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