Refrigeration Cycle P-v Diagram

April 21, 2024 Post a Comment

Refrigeration cycle p-v diagram

The 4 Main Refrigeration Cycle Components

<ul class="i8Z77e"><li class="TrT0Xe">The compressor.</li><li class="TrT0Xe">The condenser.</li><li class="TrT0Xe">The expansion device.</li><li class="TrT0Xe">The evaporator.</li></ul>

What are the 4 stages of vapor-compression refrigeration cycle?

The Vapor Compression Refrigeration Cycle involves four components: compressor, condenser, expansion valve/throttle valve and evaporator. It is a compression process, whose aim is to raise the refrigerant pressure, as it flows from an evaporator.

What is ideal refrigeration cycle?

An ideal refrigerator or heat pump can be thought of as an ideal heat engine that is operating in a reverse Carnot cycle. Heat pump cycles and refrigeration cycles can be classified as vapor compression, vapor absorption, gas cycle, or Stirling cycle types.

How does the vapor-compression refrigeration cycle work?

The Vapor Compression Refrigeration Cycle As the refrigerant circulates through the system, it is alternately compressed and expanded, changing its state from a liquid to a vapor. As the refrigerant changes state, heat is absorbed and expelled by the system, lowering the temperature of the conditioned space.

What are the 3 types of refrigeration?

What Are the Different Types of Refrigeration Systems?

Mechanical-Compression Refrigeration Systems. The most widely used refrigeration cycle method is mechanical compression.
Absorption Refrigeration. ...
Evaporative Cooling. ...
Thermoelectric Refrigeration.

What are the 5 parts of refrigerator?

The main working parts of a refrigerator include a compressor, a condenser, an evaporator, an expansion valve, and a refrigerant.

What are the 3 refrigerant recovery methods?

The three different recovery methods are: vapor recovery; the push-pull method; and the liquid recovery method. In the vapor recovery method, the refrigerant is removed from the HVAC system in a vapor state. The vapor is then condensed into a liquid by the recovery unit and transferred to the recovery cyclinder.

How refrigerator works step by step?

The Refrigeration Cycle: Step by Step

STEP 1: Refrigerant compressed.
STEP 2: Hot air pushed out. ...
STEP 3: Refrigerant becomes a liquid. ...
STEP 4: Refrigerant flows into evaporator coils. ...
STEP 5: Heat is absorbed. ...
STEP 6: Refrigerant evaporates. ...
STEP 7: Cycle repeats.

How does refrigeration work?

Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas. This process, called evaporation, cools the surrounding area and produces the desired effect. You can test this process for yourself by taking some alcohol and putting a drop or two on your skin.

What is COP formula?

COP = |Q| W. COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.

What is unit of refrigeration?

The practical unit of refrigeration is expressed in terms of tonne of refrigeration. A tonne of refrigeration effect produced by the uniform melting of one tonne (1000 kg) of ice from and at 0oC in 24 hours. Since the latent heat of ice is 335 KJ/kg. Therefore. 1TR = 1000 x 335 JH ub 24 hours.

What is refrigeration efficiency?

Refrigeration efficiency is measured in terms of the Coefficient of Performance (COP) - the ratio of cooling energy supplied to the amount of electrical energy used. It varies according to: System type and design, for example, refrigerant gas and compressor type. Operational parameters and control settings.

Can you explain the refrigeration cycle?

The refrigeration cycle starts and ends with the compressor. The refrigerant flows into the Compressor where it is compressed and pressurised. At this point, the refrigerant is a hot gas. The refrigerant is then pushed to the Condenser which turns the vapour into liquid and absorbs some of the heat.

Which refrigerant is used in Vapour compression cycle?

A variety of refrigerants are used in vapor compression systems. The choice of fluid is determined largely by the cooling temperature required. Commonly used refrigerants are in the family of chlorinated fluorocarbons (CFCs, also called Freons): R-11, R-12, R-21, R-22 and R-502.

What energy is used in Vapour compression cycle?

Explanation: Vapour compression refrigeration systems use mechanical energy. The electrical energy is converted into mechanical energy to perform the process of compression.

What are the 3 principle of refrigerant?

The absorption of the amount of heat necessary for the change of state from a liquid to a vapor by evaporation, and the release of that amount of heat necessary for the change of state from a vapor back to the liquid by condensation are the main principles of the refrigeration process, or cycle.

What are the 3 main components of refrigeration system?

The main components of a refrigeration system are the condenser, the compressor, the evaporator and the expansion valve.

What are the two types of refrigerant?

There are two main categories of refrigerants that residential AC systems use. These are R-22 (Freon) and R-410A (Puron). There are other refrigerants that are used in the commercial HVAC industry, but today we're focusing on the types used in residential HVAC.

Which gas is used in refrigerator?

Modern refrigerators usually use a refrigerant called HFC-134a (1,1,1,2-Tetrafluoroethane), which does not deplete the ozone layer, unlike Freon. R-134a is becoming much rarer in Europe. Newer refrigerants are being used instead.