Refrigeration System

Refrigeration is the process of keeping an item in a system for cooling with the use of a refrigerant and has several applications. This system is widely used in preservation, storage, processing and transportation of food from one place to another. But it also applies in the field of medicine, where it is used in preserving vaccines, anesthetics, blood plasma and other forms medication. It also applies in air conditioning systems of building and vehicles. Other applications are drinking fountain, dehumidifiers, ice making, ice skating rinks, construction and desalting of seawater. This essay will focus on the development of refrigeration and how it works. It will also show the working substance of this system, the refrigerant. Lastly, this

This substance cycles in the refrigeration process. There are requirements or properties to have so it can fit in the refrigeration system. First of the thermodynamic property, the refrigerant should have the intake of pressure to be high because this may result to smaller movement in the compressor. Second, the amount of pressure to be released should be low. Next, the proportion of the pressure should also be low to consume less power and to have high regulation of volume. Then, the unused heat in the vaporization should be large. It is also required to have a small specific heat in liquid and large specific heat in vapor. Thermal conductivity is also a factor and it should be high for the flow of heat. Lastly, it should be less viscous. Other properties that are related to the environment and safety of the user are also required. The ozone depletion potential, global warming potential and total equivalent warming index should be low because these properties could harm our environment and worsen the pollution in the world. The refrigerant to be used should not be flammable and toxic. These properties can harm the health of an individual. Other properties needed are its stability, compatibility and miscibility with oil for the refrigerant to be handled easily. Last property is its affordability and availability. The types of refrigerants and its example that will be stated are substances that passed some of the

These two have the same principles. Both use refrigerants and apply the vapor-compression cycle in their system. One of the differences is the gas supply. Refrigeration systems have tubes that are connected to each other where CFCs are used. On the other hand, air conditioning systems used chemicals that are integral to the system and air from the surroundings. These two also differ in the circulation in their system. Refrigeration systems keep the low temperature of atmosphere in a unit. This is attained with the help of the compressors where the cool air is drawn to reuse the gas. While air conditioning systems release the air to cool a space or room with the fan in the unit. Last common difference is in their method of vaporization. Refrigeration units vaporize liquid into gas by means of boiling. It is done in an internal heat exchange coil where the refrigerant has a low pressure that causes the temperature to reach the boiling point. Air conditioning units on the other hand, turn the liquid refrigerant to gas in the evaporator where it evaporates. Before that, the liquid’s pressure falls and will have a high temperature but the liquid will not boil. (Gish,