E-mail: nanjwadebk@gmail.com Refrigeration is only one part of an entire industry built around keeping indoor air comfortable and healthy called heating, air conditioning, ventilation, and refrigeration (HVAC/R). system. This … Department of Pharmaceutics 2.2.Patel Divya (140410116051)Patel Divya (140410116051) Refrigeration System determine the pressures. Fig 12: LPG refrigeration and heating systemAdvantages of LPG Refrigeration System: » Use of LPG as a refrigerant also improves the overall efficiency of by 10 to 20%. Analysis Standard Vapour Compression Refrigeration System (VCRS) Evaporator: Heat transfer rate at evaporator or refrigeration capacity, is given by: Where m r is the refrigerant mass flow rate in kg/s, h1 and h4 are the specific enthalpies (kJ/kg) at the exit and inlet to the evaporator, respectively. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 4 . REFRIGERATION Refrigeration Refrigeration A process where heat is transferred from a lower-to a higher- temperature level by doing work on a system. by. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. drs. Tobruk, Libya. Pharm., Ph. Refrigeration system: Hot gas Bypass valve. Construction: The vapour absorption system consists of a condenser, an expansion valve and an evaporator. Bypass valve regulates the cooling capacity by injecting discharge gas back into the suction. Therefore, In this booklet the SI-system will be the primary unit system used. Clipping is a handy way to collect important slides you want to go back to later. Describe the term “ton of refrigeration” Describe the basic refrigeration cycle . Refrigeration CycleRefrigeration Cycle In refrigeration system the heat is being generally pumped from low level to higher one & rejected at that temp. 2. prof p.k. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. They perform the same as they do in vapour compression method. Performance Testing of Absorption Refrigeration system Performance Testing of Absorption Refrigeration System Student: Tan Wen Xiong U1121418L Supervisor: Associate Prof Cai Wenjian Examiner: Associate Prof Mao Kezhi Introduction By: Tan Wen Xiong U1121418L Conclusion Motivation Vapour Absorption Refrigeration system - Construction. Hot gas bypass valves used in compressors do not have a capacity reduction device like compressor unloader. The most common refrigeration system in use today involves the input of work (from a compressor) and uses the Vapor Compression Cycle. This system is useful for applications where the temperature required is more than 32 degree F. Special Features of Water-Lithium Bromide Solution. For a number of countries the implementation of the SI-system is still an on-going process. Now customize the name of a clipboard to store your clips. Dr. Basavaraj K. NanjwadeM. List some desired refrigerant characteristics. ME-201 Refrigeration and Heat Pump System Introduction Refrigeration systems for food These systems consist of an evaporator, a Principle of refrigeration • The refrigeration cycle is also known as vapour compression cycle. 2014/03/04 1 Compression Refrigeration System • Evaporator – Extract heat from the product/air and use it as the latent heat of vaporization of the refrigerant • Compressor – Raise temperature of refrigerant to well above that of surroundings to facilitate transfer of energy to surroundings in condenser • Condenser of a vapor-compression refrigeration system 3 . Students Name:-Students Name:- It is important to attach and remove a gauge manifold Steam is passed through a vacuum ejector of high efficiency to exhaust a separate, closed vessel which forms part of a cooling water circuit. prepared by – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 817360-ZDc2Y patel in mechanical dept. The cycle operates at two pressures high and low, to produces a continuous cooling effect. The refrigeration system is known to the man, since the middle nineteenth century.

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