The C.O.P. of an absorption type refrigerator is given by (where T₁ = Temperature at which the working substance receives heat, T₂ = Temperature of cooling water, and T₃ = Evaporator temperature)
[T₁ (T₂ - T₃)] / [T₃ (T₁ - T₂)]
[T₃ (T₁ - T₂)]/ [T₁ (T₂ - T₃)]
[T₁ (T₁ - T₂)] / [T₃ (T₂ - T₃)]
[T₃ (T₂ - T₃)] / [T₁ (T₁ - T₂)]
- The specific humidity during dehumidification process
- A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
- Rating of a domestic refrigerator is of the order of
- The operating pressure for refrigerating units using R-12 as a refrigerant is
- In vapour compression refrigeration system, refrigerant occurs as liquid between
- A refrigerant with the highest critical pressure is
- For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
- In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
- The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
- The moisture in a refrigerant is removed by
- A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine…
- The dehumidification process, on the psychrometric chart, is shown by
- The COP of a vapour compression plant in comparison to vapour absorption plant is
- The temperature of air recorded by a thermometer, when it is not affected by the moisture present in…
- The unit of thermal diffusivity is
- Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
- The optimum effective temperature for human comfort is
- For obtaining high COP, the pressure range of compressor should be
- In a vapour compression system, the condition of refrigerant is dry saturated vapour
- The humidity ratio or specific humidity is the mass of water vapour present in
- Which of the following refrigerant has the lowest boiling point?
- Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
- When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
- In a vapour compression system, the condition of refrigerant before entering the expansion or throttle…
- The C.O.P. of a heat pump working on a reversed Carnot cycle is
- The dry bulb temperature lines, on the psychrometric chart are
- Choose the wrong statement
- Vapour compression refrigeration is somewhat like
- During sensible cooling of air ________ decreases.
- The COP of a domestic refrigerator