The __________ point of ammonia is -77.7°C.

More Questions from Heat Transfer, Refrigeration and Air Conditioning

• Environmental protection agencies advice against the use of chloro-fluoro-carbon refrigerants since
• The heat is transferred by conduction, convection and radiation in
• The by-pass factor of a cooling coil decreases with
• The expansion valve in a refrigerator controls the flow of refrigerant.
• Emissivity of a body will be equal to its absorptivity at all temperatures.
• The by-pass factor, in case of sensible cooling of air, is given by (where td1 = Dry bulb temperature of air entering the cooling coil, td2 = Dry bulb temperature of air leaving the cooling coil, and td3 = Dry bulb temperature of the cooling coil)
• A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called
• The pressure at the outlet of a refrigerant compressor is called
• For unsaturated air, the dew point temperature is __________ wet bulb temperature.
• A thermostatic expansion valve in a refrigeration system

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