Important Questions of Refrigeration & Air Conditioning

Hello Everyone,This is Vivek Sharma
and in this article you are going to find some Important Questions of Refrigeration & Air Conditioning. Refrigeration & Air Conditioning is a main subject of Mechanical Engineering & Civil Engineering students.

I hope you will find these question useful 🙂

Here are the Questions

Enumerate different ways of producing refrigeration.
What is the standard rating of a refrigeration machine?
What is the effect of sub-cooling on the performance of the vapour compression refrigeration system?
State elements of the refrigeration system.
State the advantages of central system over the unitary system of air conditioning.
Write the properties of carbon dioxide refrigerant.
What is the function of ducts?
How air conditioning systems are classified?
Explain briefly an air refrigerator working on a reversed Carnot cycle. Drive an expression for its C.O.P.
Give the comparison between a vapour compression system and a vapour absorption system.
State the functions of the following parts of a simple vapour compression system:
- Compressor
- Condenser
- Expansion valve
- Evaporator
Write the short note on “pressure-enthalpy (p-h) chart.” Show the simple vapour compression cycle on p-h charts.
What is the advantage of using an expansion valve instead of an expander in a vapour compression refrigeration cycle?
A refrigerator operating on standard vapour compression cycle has a coefficient of performance of 6.5 and is driven by a 50 kW compressor. The enthalpies of saturated liquid and vapour refrigerant at the operating condensing temperature of 35 Degree C are 62.55 kJ/kg and 201.45 kJ/kg respectively.The saturated refrigerant vapour leaving evaporator has of 187.53 kJ/kg. Find the refrigerant.
Discuss the effect of the following on the performance of a vapour compression system:
- Suction Pressure
- Delivery Pressure
- Superheating