Thermodynamics Of The Cooling Cycle

Refrigerant cycle is simple. Refrigerant let the evaporator in a liquid state at room temperature. Some refrigerant evaporates under low pressure in the evaporator. It cools the remaining until the desired temperature refrigeration. Then, while the rest of the refrigerant evaporates, it removes heat from the evaporator and, consequently, from the Cabinet. The total amount of heat absorbed is the total latent heat of vaporization. The amount of heat absorbed from the Cabinet and evaporator effective latent heat.

Refrigerant fumes formed during evaporation goes down the suction line. As it happens, the pair is somewhat reduced pressure (usually 2 psi [14 kPa]). This temperature increase of about 1 0F (6 C). Warm-up or a rise in temperature of the refrigerant evaporates after called "overheated steam." The level of overheating the difference between the steam temperature at the outlet of the compressor and its boiling point.

Compressor, then takes a bit of superheated steam and converts (compresses). It is compressed to high temperature, high pressure steam. Tin condensing temperature somedmes becomes as high as 2500F (1215C), depending on the refrigerant and condi-dons.

Superheated steam passes into the condenser. If the temperature is higher than the temperature of the environment (water or air) temperature, BelTA enough of its heat to the air or water to cool his steam, pressure and temperature. If the vapour pressure-temperature is higher than the temperature of air or water, vapour refrigerant begins to lose some of the latent heat of evaporation. The amount of heat it loses determines the number of couples who will condense into a liquid. After she became the liquid refrigerant is cooled, close to the ambient temperature.

The refrigerant enters the refrigerant management, where the pressure decreases. The refrigerant is cooled as it evaporates (this becomes a "flash-gas"). The rest evaporates remove the heat from the Cabinet. Thus refrigerant cycle repeats. Figure shows 16-15 this cycle occurs. It also indicates the temperature in different parts of the cooling system.