The emissivity for a black body is

More Questions from Heat Transfer, Refrigeration and Air Conditioning

• Thermal conductivity of air increases with rise in temperature.
• In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in
• The process of removing moisture from the air, without change in its dry bulb temperature, is called dehumidification.
• Thermal diffusivity of a substance is
• Fouling factor is used
• Which of the following refrigerant has the lowest freezing point?
• The critical pressure of a liquid is the pressure
• Free convection flow depends on
• Air conditioning means
• The specific humidity during dehumidification process

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