During sub-cooling, sensible heat from a liquid refrigerant is removed.

More Questions from Heat Transfer, Refrigeration and Air Conditioning

• The emissivity of a polished silver body is __________ as compared to black body.
• A grey body is one whose absorptivity does not vary with temperature and wave length of the incident ray.
• The wet bulb temperature during sensible cooling of air
• The colour of the flame of halide torch, in case of leakage of freon refrigerant, will change to
• In absorption vapour systems, the refrigerant widely used is R-12.
• In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
• The final relative humidity of the air during cooling and dehumidification is generally __________ than that of entering air.
• The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The by-pass factor of the heating coil is
• Prandtl number (PN) is given by PN = μ.cp/k.
• The transfer of heat by molecular collision is smallest in

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