How do you calculate the efficiency of a refrigeration cycle?

The efficiency is e = W/Qhigh. Details of the calculation: Qhigh = 360 J. W = 25 J.

What is the efficiency of a refrigeration system?

Coefficient of Performance (COP) The efficiency of RACHP equipment is often expressed as the COP. This is the ratio of the heat absorbed in the evaporator to the energy used to power the compressor and related auxiliaries. The COP is usually in the range of 1 to 5 (although it can be lower or higher).

How is compressor efficiency calculated?

Simple Energy Formula: Motor Efficiency = Cost per KW X . 746 (Power Factor) X Hours of operation X Brake horsepower *Note: No electric motor is 100% efficient, most will average 92-95% efficient. PSI VS. BHP (Rule of thumb): For every 1 PSIG pressure drop, BHP (Brake horsepower) goes down ½ %.

How is refrigerator COP calculated?

For a refrigerator the coefficient of performance is COP = Qlow/(-W). Details of the calculation: (a) COP = Qlow/(-W). (-W) = Qlow/COP = 120/5 J = 24 J.

What is coefficient of performance of a refrigeration cycle?

The coefficient of performance, COP, of a refrigerator is defined as the heat removed from the cold reservoir Qcold (i.e., inside a refrigerator) divided by the work W done to remove the heat (i.e., the work done by the compressor). The COP strongly depends on outside temperature and required indoor temperature.

How do you calculate the efficiency of a cooling system?

The EER is a measure of the cooling power of an air conditioning system per unit of power consumed. It is calculated by dividing the cooling power provided by an AC per hour by the number of watts of electricity consumed.

How do I increase Vapour compression cycle?

To improve the coefficient of performance, its requires that the compressor work should decrease and refrigeration effect should increase. It means that decrease in condenser pressure and temperature so the refrigeration effect will increase and compressor input work due to this cop will increase.

What is the efficiency of compressor?

Air compressors operate at about 10 percent efficiency — you lose most of the energy to heat. By using a heat recovery system, you can recover nearly all of the lost power and use it for warming your workspace or other applications.

How is COP of Vapour compression refrigeration system calculated?

The simple coefficient of performance (COP) for a given vapour compression cycle is calculated by the cooling power delivered through the evaporation process divided by the work added during the compression process, as in Figure 1. In this example, the cycle has a COP of (395-250)/(430-395) = 4.1.