With increase in evapo rat or pressure The volumetric efficiency of compressor of a Air conditioner is
With increase in condenser pressure t he volumetric efficiency is
Due to subcooling the refrigeration effect
The cycle used for gas refrigeration is
Air refrigeration cycle is used in
In VARC, The compressor is replaced by
In which of the following cycles waste heat is utilized .
In vapour absorbtion cycle the refrigerant used can be mixure of water and
The throttling device is replaced by an expender in which of the following system
The maximum COP of an absorbtion cycle is given by (TG = Generator Temperature, To = Environment temperature, Te = Evaporator temperature)
Which o f t he fo llowing is an eco friendly refrigerant ?
Which of the following is a saturated hydrocarbon.
Ozone is naturally found in
Which of the following is designation of H2O
Ammonia leakage from refrigerat or can be detected by
The refrigerant used in milk chilling plant is
In a electrolux refrigerator apart from NH3 and H2O the third gas used is
Reversed brayton cycle is also known as
As COP of an Refrigerator increases in heat rejection ratio
Energy performance ratio is
The COP of a refrigerator working on reversed carnot cycle is 4. The ratio of highest absolute temperature is lowest absolute temperature is .
A carnot Refrigerator requires 1.5 kw/ton of refrigeration to maintain a region at a temperature of 243 K. The COP is
An ideal Refrigeration cycle has condenser and evaporator temperature of 27º C and – 3ºC. The COP of the Refrigerator is
A heat pump works on reversed carnot cycle.The temperature in the condenser coil is 27ºC and that in the evaporator coil is -23ºC and that in the evaporator coil is -23ºC. For work of 1.5 kW, how much heat is pumped.
A condenser of a refrigerator reject heat at a rate of 150 kw, while compressor consumes a power of 50kW. The COP is.