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During the adiabatic cooling of moist air (a) DBT remains constant (b) specific humidity remains constant (c) relative humidity remains constant (d) WBT remains constant. |
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Answer» (d) WBT remains constant. All common refrigerants like F11, F12, F22, NH3 etc. have approximately the same C.O.P. ranging from 4.76 to 5.09 and H.P./ton varies from 0.99 to 1.01. The electric resistance of the refrigerants is an important factor when it is used in hermetically sealed unit where the motor is exposed to the refrigerant. |
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