Refrigeration and Air Conditioning Laboratory

• To demonstrate the basic vapour compression cycle of refrigeration
• To study theoretical cycles and plotting ofT- and P.H. charts
• To study the properties of refrigerant at salient point s of the cycle
• To find out refrigerating effect and work input, hence, actual and theoretical C.O.P.
• To study functioning of vapour compression cycle at various evaporator temperatures
• To study thermal energy balance at evaporator, condenser and overall
• To study compressor efficiency at varying functioning condition

• To demonstrate the basic Vapour Compression Cycle of Refrigeration
• To study theoretical cycles and plotting of T- and P.H. charts
• To study the properties of refrigerant at salient points of the cycle
• To find out refrigerating effect and work input, hence, actual & theoretical C.O.P
• To study functioning of vapour compression cycle at various evaporator temperatures
• To study compressor efficiency at varying functioning condition
• This equipment is fully instrumented to demonstrate "Refrigeration System" with basic components and necessary controls

Range of Experiments :

1. Study of refrigeration cycle of industrial refrigeration application.

2. Performance evaluation of the cycle. For cop, refrigeration capacity & volumetric efficiency.

• To find the COP of individual refrigeration cycle
• To find the COP of cascade cycle
• TO study various parameters and heat balance of cascade refrigeration system

• Evaluation of the Peltier effect With reversing switch set to normal, power is applied to the module at a verity settings. After allowing stabilizing both temperatures are noted. Observe that at higher power input IR and heat conduction factors tend to overwhelm the cooling effect.
• Coefficient of Performance Power to the module is set and then heater power is adjusted to maintain ambient Temperature on the cold side of the module. Repeat over the whole range. The curves show that the coefficient is highest when the module has to do the minimum of work

• Analysis of the combined Ranking and Vapour Compression Cycle
• Demonstration of the characteristics of an ejected or thermo compressor
• Production of performance curves as a refrigerator & comparison with ideal
• Ranking Vapour Compression Cycle
• Production of performance curves as a heat pump and comparison with ideal Ranking Vapour Compression Cycle
• Demonstration of adiabatic mixing of hot and cold vapour
• Demonstration of adiabatic throttling

• Study of ice plant refrigeration cycle
• Study of various parameters affecting the freezing time

• To demonstrate the basic Vapour Compression Cycle of Refrigeration
• To study theoretical cycles and plotting of T- and P.H. charts
• To find out refrigerating effect and work input, hence, actual and theoretical C.O.P.
• To study functioning of vapour compression cycle at various evaporator temperatures
• To study compressor efficiency at varying functioning condition
• Variation of COP with heat load

• Determination of co-efficient of performance of the unit when working as heat pump and when working as refrigerator
• Calculation of Energy balances for complete system over a range of operating conditions
• To determine overall heat transfer co-efficient for condenser and evaporator
• To observe effect of sub-cooling in the condenser on co-efficient of performance of heat pump

• Cold storage plant tutor is basically designed to demonstrate working and operation of various components used in cold storage plant
• Minimum temperature which can be achieved in this plant is - 5 ⁰c

• Actual visualization and operation of water cooling tower
• To study conservation of mass by evaporative cooling of water in air and through the exchange of heat between air and water Heat balance sheet

 Range of Experiments :

1. To demonstrate the basic Vapour Compression Cycle of Refrigeration .

2. To study theoretical cycles and plotting of T- and P.H. charts .

3. To find out refrigerating effect and work input , hence , actual and theoretical C.O.P.

4. To study functioning of vapour compression cycle at various evaporator temperatures

5. To study compressor efficiency at varying functioning condition

6. Variation of COP with heat load

• To study the working of the Vapour Absorption system
• To find out Refrigeration effect
• To find out coefficient of performance

• Study of ice plant refrigeration cycle.
• Study of various parameters affecting the freezing time.

This unit has been designed to simulate various problem/ troubles normally occurred in refrigeration cycle and the effects of this on the

set-up. This includes simulation of both, electrical as well as Mechanical problems. However these simulations have been designed

for short- time operation and for no continuous running of cycle. This unit is mainly used for training of technicians in the repair and

maintenance .

This unit basically consists of refrigeration Cycle, mounted on a board where Electrical and Refrigeration cycle, along with

1number of switches and connections to simulate various problems are fitted

The spray section will either add moisture to the air or dehumidify the air, while washing solid particles out of the air.

• Demonstration of heating, cooling, humidification and dehumidification for conditioning of air
• Demonstration of constant enthalpy mixing of two air streams
• Study of working of re-circulating air conditioning
• To study compressor efficiency at varying functioning condition
• Price: 1.9 lakh onwards

• Study of water cooling refrigeration cycle
• Study of various point water cooling affecting the freezing time