Why should refrigerant have low specific heat?

Solution(By Examveda Team) – It must have low specific heat and high latent heat. Because high specific heat decreases the refrigerating effect per kg of refrigerant and high latent heat at low temperature increases the refrigerating effect per kg of refrigerant.

What is the desirable property of refrigerant?

The desirable properties of a refrigerant are as follows: High latent heat of vaporization to get more refrigeration effect. Large conductivity to reduce size of condenser and evaporator. Low specific volume of vapour. Low freezing point such that there is no blockage during flow through evaporator.

What are desirable thermodynamics properties of a good refrigerant?

Properties of a good refrigerants:

• Low boiling Point.
• High Critical Temperature.
• High latent heat of vaporisation.
• Low specific heat of liquid.
• Low specific volume of vapour.
• Non-corrosive to metal.
• Non-flammable.
• Non-explosive.

Which of the following is the desirable property of refrigerant in vapor compression refrigeration system?

It should be non-flammable, non-explosive, non-toxic, and non-corrosive. It should not have any bad effects on the stored material or food when any leak develops in the system.

Why refrigerant should have high latent heat?

A refrigerant should have high latent heat of vaporization at the evaporator pressure. The high latent heat results in a high refrigerating effect per kg of refrigerant circulated. It must have high thermal conductivity to reduce the area of heat transfer in the evaporator and condenser.

What is specific heat of refrigerant?

Freon 12 is the Dupont trade name for flurocarbon refrigerant gas, CCl2F2. The saturated liquid at 20 C has a specific heat of 0.96 kJ/ kg. K and at -20 C the specific heat is 0.90 kJ/ kg.

What is desirable characteristics of refrigerant Mcq?

Non-flammable and non-explosive. Non-toxic. Low cost. Easy to liquefy at moderate pressure and temperature.

Why refrigerant should have high latent heat of vaporization?

Why is critical pressure of refrigerant low?

Refrigerants with a low critical (design) temperature experience a larger degradation of cooling capacity. The critical temperature of the refrigerant should be as high as possible above the condensing temperature in order to have a greater heat transfer at a constant temperature.

What is the purpose of a refrigerant Mcq?

What is the purpose of using a refrigerant compressor? Explanation: Refrigerant compressor is multifunctional equipment used for work done. The compressor raises the temperature and pressure of the refrigerant. It also helps to circulate the refrigerant through the refrigerant system.

Does R744 deplete the ozone layer?

Question Does R744 have any impact on the ozone layer? No, R744 does not contribute in any way to the depletion of the ozone layer.