In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about
1
1.25
2.15
5.12
- The bank of tubes at the back of domestic refrigerator is
- A good refrigerant should have
- For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference…
- In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as…
- During a refrigeration cycle, heat is rejected by the refrigerant in a
- Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the…
- The dehumidification process, on the psychrometric chart, is shown by
- A refrigerant with the highest critical pressure is
- The central air conditioning system has ________ overall efficiency as compared to individual systems.
- The wet bulb temperature during sensible cooling of air
- Mass flow ratio of NH₃ in comparison to Freon12 for same refrigeration load and same temperature…
- The capillary tube, as an expansion device, is used in
- In a refrigeration system, heat absorbed in comparison to heat rejected is
- The sub-cooling in a refrigeration cycle
- If a gas is to be liquefied, its temperature must be
- For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied…
- The minimum temperature to which water can be cooled in a cooling tower is
- The relative humidity lines on a psychrometric chart are
- Which of the following statement is correct?
- For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
- The difference between dry bulb temperature and dew point temperature, is called
- The temperature of air recorded by a thermometer, when it is not affected by the moisture present in…
- The lowest temperature during the cycle in a vapour compression system occurs after
- In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature…
- Vapour compression refrigeration is somewhat like
- Vertical lines on pressure-enthalpy chart show constant
- The leaks in a refrigeration system using Freon are detected by
- Which of the following statement is correct?
- The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
- The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature,…