Types of refrigerant used in refrigeration system pdf

MDEA is also used for this pretreatment stage versus sulfinol because the MDEA process is cheaper to install and it has less utility since it requires less rate of solvent circulation compared to sulfinol. 78 The second stage is dehydration. Water is removed from the natural gas also to avoid freezing in the pipeline of the liquefaction process. includes air conditioning of the printing plants, textile plants, photographic products, computer rooms, etc. It has been mentioned above that the refrigeration and air conditioning are related. Even when a space has to be heated, it can be done so by changing the direction of flow of the refrigerant in the refrigeration system, i.e., the A refrigerant compressor is a machine used to compress the refrigerant from the evaporator and to raise its pressure so that the corresponding temperature is higher than that of the cooling medium. The condenser is an important device used in the high pressure side of a refrigeration system. Its function is to remove heat of the hot vapour The refrigerants which directly take part in the refrigeration system are called primary refrigerant. Primary refrigerants are used in domestic refrigerator and Air conditioning system etc. Primary refrigerants are R-11, R-12, R-21, R-143a, etc. They are classified as i) Halocarbon compounds e.g R -11 - Trichloromonofluromethane R - 12 R - 13 Vapour compression cycle is an improved type of air refrigeration cycle in which a suitable working substance, termed as refrigerant, is used. The refrigerants generally used for this purpose are ammonia (NH3), carbon dioxide (CO2), and sulfur-dioxide (SO2). Commonly used refrigerants are in the fam- ily of chlorinated fluorocarbons (CFCs, also called Freons): R-11, R-12, R-21, R-22 and R-502. The properties of these refrigerants are summarized in Table 4.1 and the performance of these refrigerants is given in Table 4.2. 4. HVAC and Refrigeration System Bureau of Energy Efficiency 76 To select the right type of components for a particular refrigerating / air conditioning system used in practice. Using the principles of air conditioning, students will be able to design different type of air conditioning systems and duct systems for industrial applications. Figure 1: Schematic representation of refrigeration system 4. Refrigeration System Components [5] There are five basic components of a refrigeration system, these are: Evaporator, Compressor, Condenser, Expansion Valve and Refrigerant- to conduct the heat from the product. In order for the refrigeration cycle to operate successfully each Refrigerators that operate with other types of energy input are only used in niche applications. This article deals with the refrigerants used in steady-state sys-tems belonging to the broad category of vapour compression refrigeration systems (VCRS) that operate using mechanical power. Vapour Compression Refrigeration Cycles A Below diagrams shows the complete setup of basic Marine Refrigeration System that is being used in refrigeration process. Process: A cold refrigerant comes to the evaporator and here it takes heat from the material that has to be cooled down. Since it takes heat from the surrounding, refrigerant gets evaporated. Thermoelectric Refrigeration Thermoelectric refrigeration systems are unique from the three other types of refrigeration in that no refrig