Short horizontal lines on pressure-enthalpy chart show
Constant pressure lines
Constant temperature lines
Constant total heat lines
Constant entropy lines
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- In a saturated air-water vapour mixture, the
- The wet bulb temperature during sensible cooling of air
- A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250…
- The temperature of ammonia after compression in a vapour compression system is
- On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line…
- In a lithium bromide absorption refrigeration system
- The condition of refrigerant after passing through the condenser in a vapour compression system is
- Which of the following statement is correct?
- Vapour compression refrigeration is somewhat like
- If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature…
- Carbon dioxide is
- The superheating in a refrigeration cycle
- The refrigerant widely used in domestic refrigerators is
- The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
- In chemical dehumidification process,
- Which of the following statement is wrong?
- For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and…
- Formation of frost on evaporator in refrigerator
- The wet bulb temperature during sensible heating of air
- The leaks in a refrigeration system using Freon are detected by
- The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
- The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
- The desirable property of a refrigerant is
- The COP of a domestic refrigerator
- Which of the following is not a desirable property of a refrigerant?
- In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
- The reduced ambient air cooling system has
- The process, generally used in summer air conditioning to cool and dehumidify the air, is called
- In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
- The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by