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Exercise:
A dehumidifier is essentially a ``refrigerator with an open door". The humid air is pulled in by a fan and guided to a cold coil where the temperature is less than the dew po and some of the air's water condenses. After this water is extracted the air is warmed back to its original temperature and sent o the room. In a well-designed dehumidifier the heat is exchanged between the incoming and outgoing air. This way the heat that is removed by the refrigerator coil mostly comes from the condensation of water vapor to liquid. Estimate how much water is removed in one hour by an ideal humidifier if the temperature of the room is TCelsius the water condenses at TCelsius and the dehumidifier does work at the rate of pqW of electrical power.

Solution:
The efficency of performance of an ideal dehumidifier working at these temperatures is varepsilon_textscriptsize KS fracT_LT_H-T_L . since we use the low temperature. The power at which heat is taken from the warm air in the ideal case is P_L varepsilon_textscriptsize KS P pqW. In one hour the heat Q_L P_L t pq.eJ can be taken from the air. This enough to condensate m fracQ_LL_v fracpq.eJpq.eJpkgK pq.kg i.e. around pql.
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Exercise:
A dehumidifier is essentially a ``refrigerator with an open door". The humid air is pulled in by a fan and guided to a cold coil where the temperature is less than the dew po and some of the air's water condenses. After this water is extracted the air is warmed back to its original temperature and sent o the room. In a well-designed dehumidifier the heat is exchanged between the incoming and outgoing air. This way the heat that is removed by the refrigerator coil mostly comes from the condensation of water vapor to liquid. Estimate how much water is removed in one hour by an ideal humidifier if the temperature of the room is TCelsius the water condenses at TCelsius and the dehumidifier does work at the rate of pqW of electrical power.

Solution:
The efficency of performance of an ideal dehumidifier working at these temperatures is varepsilon_textscriptsize KS fracT_LT_H-T_L . since we use the low temperature. The power at which heat is taken from the warm air in the ideal case is P_L varepsilon_textscriptsize KS P pqW. In one hour the heat Q_L P_L t pq.eJ can be taken from the air. This enough to condensate m fracQ_LL_v fracpq.eJpq.eJpkgK pq.kg i.e. around pql.
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Attributes & Decorations
Branches
Temperatur & Heat
Tags
dehumidifier, engine, heat, heatengine, laws, of, physics, refridgerator, thermodynamics
Content image
Difficulty
(3, default)
Points
3 (default)
Language
ENG (English)
Type
Calculative / Quantity
Creator uz
Decoration
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Link