Refrigeration cycle

In the gas cycle , the refrigeration effect is equal to the product of the specific heat of the gas and the rise in temperature of the gas in the low temperature side. Therefore, for the same cooling loa gas refrigeration cycle machines require a larger mass flow rate, which in turn increases their size. What are the various types of refrigeration cycles? How does the refrigeration cycle work in a fridge!

What is the basic refrigeration cycle? Why refrigeration cycle is called reverse Carnot cycle? Liquids absorb heat when changed from liquid to gas.

Gases give off heat when changed from gas to liquid. For an air conditioning system to operate with economy, the refrigerant must be used repeatedly. Find out how the refrigeration cycle works. A sequence of thermodynamic processes whereby heat is withdrawn from a cold body and expelled to a hot body. Theoretical thermodynamic cycles consist of nondissipative and frictionless processes.

For this reason, a thermodynamic cycle can be operated in the forward direction to produce mechanical power from heat energy,. While some people have viewed this method as environmentally harmful and inefficient, the cycle is still applicable in the industrial sphere. In the past, this was done by collecting ice in the winter and using its specific heat to cool as the ice melted. Refrigeration Cycle Explained in Easy Way.

This is often measured at the liquid’s boiling point. When pound of ice melts, it absorbs 1Btu, as latent energy. Using a refrigerant which boils at a low temperature produces a relative coldness, lowering the temperature of the refrigerator to a level which prevents bacteria from multiplying and ruining food.

An air conditioner works using a thermodynamic cycle called the refrigeration cycle. A refrigeration cycle works on essentially the same principle that makes your hand feel cold when water is evaporating off of it. It does this by changing the pressure and state of the refrigerant to absorb or release heat. Most air conditioners are air-source, split systems. What this means is that there is one unit inside and one unit outside, which is why it is called a split system.

As the temperature of the air through the evaporator rises, the thermostat or cold control remakes the electrical circuit. In addition to the accumulator, a compressor crankcase heater (12) is included on many systems. Traces the basic refrigeration cycle. Concludes with a lesson on the tools and instruments needed for refrigeration servicing and safe work practices.

REFRIGERATION CYCLE S Carnot Cycle We start discussing the well-known Carnot cycle in its refrigeration mode. Figure 1: Carnot Cycle In this cycle we define the coefficient of performance as follows: LL HL qT COP wT T == − (1) Which comes from the fact that wq q= HL− (first law) and qTsLL= Δ , qTsHH=Δ (second law). We usually think of the cycle being used to create cooling, but if you have ever felt the backside of a refrigerator or air conditioner, you know the cycle also produces heat.

Take the system operating pressures and convert them to absolute pressure by adding These pressures will be used to establish the evaporator and condenser lines. The Refrigeration Cycle. Your customers may not need to go beyond this simple understanding of refrigeration.

However, they may expect you to have a much greater ‘in-depth’ understanding of refrigeration to help them solve their cooling needs.