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The Interlevin refrigeration works on Vapor-compression refrigeration or Vapor-compression refrigeration system (VCRS), in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used methods used in domestic and commercial refrigerators, large-scale warehouses for chilled or frozen storage of food items, railroad cars and refrigerated trucks, and a bunch of other commercial/industrial services and air-conditioning of buildings and automobiles. Petrochemicals, oil refineries and chemical processing plants, and natural-gas processing plants that frequently make use of large vapor-compression refrigeration systems. When it comes to defining the process of Interlevin Refrigeration, it might be defined as lowering the temperature of an enclosed space by removing heat from that space and transferring it somewhere else. A device that performs this function might also be called a refrigerator, air-conditioner, geothermal heat pump or chiller (heat pump), air source heat pump. The Interlevin’s vapor-compression uses a circulating liquid refrigerant as the medium which has the ability to absorb and remove heat from the space to be cooled and then snubs that heat away. This system has four components: a compressor, a condenser, a thermal expansion valve (also known a metering device or throttle valve), and an evaporator. Now the circulating refrigerant goes into the compressor in the thermodynamic state called as a saturated vapor and is compressed to a higher pressure, ensuing in a higher temperature too. The compressed, hot vapor is subsequently in the thermodynamic state called as a superheated vapor and it is at a temperature and pressure at which it can be condensed with either cooling air or cooling water. Afterwards, that hot vapor is then passed through a condenser in order to get cooled and condensed into a liquid by routing through a coil or tubes with cool air flowing across the tubes or coil or cool water. This is the time when the circulating refrigerant snubs heat from the system and the snubbed heat is carried away by either the air or the water (either the case). Now the condensed liquid refrigerant, in the thermodynamic state called as a saturated liquid, is next routed through an expansion valve where it undergoes an abrupt reduction in pressure. Due to this pressure reduction, adiabatic flash evaporation of a part of the liquid refrigerant takes place. This auto refrigeration effect of the adiabatic flash evaporation eventually lowers the temperature of the vapor refrigerant mixture and liquid to where it is colder than the temperature of the enclosed space to be refrigerated. Afterwards, this cold mixture is passed through the tubes or coil in the evaporator. A fan circulates the warm air in the enclosed space across the coil or tubes carrying the cold refrigerant liquid and vapor mixture. That warm air evaporates the liquid part of the cold refrigerant mixture. Simultaneously, the circulating air is cooled and therefore lowers the temperature of the enclosed space to the desired temperature. The evaporator is where the circulating refrigerant absorbs and removes heat, which is consequently refused in the condenser and transferred somewhere else by the water or air used in the condenser. In order to complete the Interlevin’s refrigeration cycle, the refrigerant vapor from the evaporator is again a saturated vapor and is flown back into the compressor.
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