Nusselt number (NN) is given by

More Questions from Heat Transfer, Refrigeration and Air Conditioning

• The relative humidity is defined as
• In a refrigerating machine, heat rejected is __________ heat absorbed.
• In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively
• The total radiation from a black body per second per unit area is __________ fourth power of the absolute temperature. This statement is known as Stefan-Boltzmann law.
• According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour)
• During a refrigeration cycle, heat is rejected by the refrigerant in a
• The critical radius is the insulation radius at which the resistance to heat flow is
• In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the
• The humidity ratio or specific humidity is the mass of water vapour present in
• In case of solids, the heat transfer takes place according to radiation.

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