Refrigeration System Components

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

What are the 4 components of HVAC system?

There are four major components of an air conditioning system. They are the evaporator, condenser, compressor, and expansion valve. Each of these air conditioner components functions in sync with each other and has a specific job to do – to keep your air conditioner running like a well-oiled machine.

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 is HVAC refrigeration?

Refrigeration is the process of moving heat and depending on whether it is a heat pump or air conditioner and what mode it is in will depend on where you are moving the heat. An air conditioner and a heat pump (in the cooling mode) will move heat outside.

What is basic refrigeration?

Refrigeration, or cooling process, is the removal of unwanted heat from a selected object, substance, or space and its transfer to another object, substance, or space. Removal of heat lowers the temperature and may be accomplished by use of ice, snow, chilled water or mechanical refrigeration.

What are the 4 types of refrigerator?

The six types of fridge configurations are top or bottom freezer, French door, side-by-side, undercounter, and quad door refrigerators. Most refrigerators are freestanding but you can find built-in fridges and counter depth models among the types of refrigerators.

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.

What is the cycle of refrigeration?

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.

What are the 4 types of refrigeration compressor?

• Reciprocating compressors.
• Rotary vane compressors.
• Scroll compressors.
• Screw compressors.
• Centrifugal compressors.

Is refrigerant liquid or gas?

Refrigerant is a liquid chemical that has an amazing ability to absorb heat once converted from a gas to a liquid state. When the refrigerant changes from one state to another through pressurization and compression, it can then absorb the heat inside your home and expel it outside.

What are the units of refrigeration?

Unit of refrigeration: Unit of refrigeration is TR (Ton of refrigeration). It is the amount of heat which is required to extract from one tonne of water at 0°C in order to convert it into equivalent ice at 0°C in a day.

Which gas is used in AC?

R22 with a molecular formula of CHCLF2 is the most widely used refrigerant for the Air-conditioners. It constantly changes its state(Solid, Liquid and gas) at different temperature.

What is COP in refrigeration?

COP (Coefficient of Performance) 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 HVAC vs AC?

So, while “HVAC” refers to the entire system, “AC” just refers to your air conditioner. Part of the confusion is when “HVAC system” gets thrown around when someone is really referring to a heat pump or furnace, for example. It's often easier to just say HVAC system, but it's not always specific enough.

What is the first principle of refrigeration?

Heat flow is a basic principle of refrigeration - in fact, of all HVAC work. For example, in the refrigeration cycle, the evaporator (cooling coil) is colder than the air flowing around it, so heat flows from the warmer air into the evaporator.

What is basic HVAC?

A basic HVAC system consists of a heating unit, a cooling unit, and a duct to move the heated or cooled air around. Generally, a furnace serves as the heating unit.

What is the 1 ton of refrigeration?

It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours.

How does a refrigerator 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 best type of refrigerator?

Among the most popular fridge styles, the French-door design (with half-width fridge doors and a pull-out bottom freezer) is the most beloved type. And shallower, counter-depth fridges are big enough for most households.

What is the most common refrigeration?

The most common type of refrigerants used today across the world are hydrofluorocarbons (HFCs). Previously, chlorofluorocarbons (CFCs) were more widely used, but were phased out following the introduction of the Montreal Protocol in 1987.