Moisture in Freon refrigeration system causes
Ineffective refrigeration
High power consumption
Freezing automatic regulating valve
Corrosion of whole system
- The coefficient of performance is the ratio of the refrigerant effect to the
- The lowest thermal diffusivity is of
- Highest temperature encountered in refrigeration cycle should be
- A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine…
- In case of sensible cooling of air, the coil efficiency is given by
- In a vapour compression cycle, the refrigerant immediately after expansion valve is
- In mechanical refrigeration system, the refrigerant has the maximum temperature
- In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
- The relative humidity is defined as
- The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which…
- The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute…
- If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature…
- The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature,…
- Which of the following is not a desirable property of a refrigerant?
- A refrigeration system
- Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
- The vapour pressure of refrigerant should be
- The bank of tubes at the back of domestic refrigerator is
- The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in…
- A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
- Chaperon equation is applicable for registration at
- The specific humidity during humidification process
- The refrigerant supplied to a compressor must be
- For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and…
- The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
- In refrigerators, the temperature difference between the evaporating refrigerant and the medium being…
- In a refrigeration system, heat absorbed in comparison to heat rejected is
- Rating of a domestic refrigerator is of the order of
- In vapour compression cycle, the condition of refrigerant is very wet vapour
- The boiling point of ammonia is