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A number of homes and small apartment buildings have demonstrated combining a large internal water tank for heat storage with roof-mounted solar-thermal collectors. Storage temperatures of 90 °C (194 °F) are sufficient to supply both domestic hot water and space heating. The first such house was MIT Solar House #1, in 1939.
Thermal comfort is the condition of mind that expresses subjective satisfaction with the thermal environment. [ 1] The human body can be viewed as a heat engine where food is the input energy. The human body will release excess heat into the environment, so the body can continue to operate. The heat transfer is proportional to temperature ...
Legionnaires' disease is a form of atypical pneumonia caused by any species of Legionella bacteria, [ 3] quite often Legionella pneumophila. Signs and symptoms include cough, shortness of breath, high fever, muscle pains, and headaches. [ 2] Nausea, vomiting, and diarrhea may also occur. [ 1] This often begins 2–10 days after exposure.
1,500 per year (US) [ 2] Hypothermia is defined as a body core temperature below 35.0 °C (95.0 °F) in humans. [ 2] Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion. In moderate hypothermia, shivering stops and confusion increases. [ 3] In severe hypothermia, there may be hallucinations and ...
The year 1816 AD is known as the Year Without a Summer because of severe climate abnormalities that caused average global temperatures to decrease by 0.4–0.7 °C (0.7–1 °F). [ 1] Summer temperatures in Europe were the coldest of any on record between 1766 and 2000, [ 2] resulting in crop failures and major food shortages across the ...
A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating, but may refer to large power generating installations such as solar parabolic troughs and solar towers or non- water heating devices such as solar cookers or solar air heaters. [ 1]
The wet-bulb temperature ( WBT) is the temperature read by a thermometer covered in cloth which has been soaked in water at ambient temperature (a wet-bulb thermometer) and over which air is passed. [ 1] At 100% relative humidity, the wet-bulb temperature is equal to the air temperature ( dry-bulb temperature ); at lower humidity the wet-bulb ...
Tropical savanna climate (Dry summer: As, dry winter: Aw ). Tropical climate is the first of the five major climate groups in the Köppen climate classification identified with the letter A. Tropical climates are defined by a monthly average temperature of 18 °C (64 °F) or higher in the coolest month, featuring hot temperatures and high ...