Vapor-compression uses a circulating liquid refrigerant as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere. If output of compressor is wet vapor, 12 13. The performance of single stage systems shows that these systems are adequate as long as the temperature 1. • The ordinary vapor-compression refrigeration systems are simple, inexpensive, reliable, and practically maintenance-free. Some industrial applications require moderately low temperatures, and the temperature range they involve may be too large for a single vapor-compression refrigeration cycle to be practical. the various types of refrigeration systems in common use along with their relative advantage and disadvantages, and to improve the performances of these systems. Work done per kg of refrigerant is reduces by using an intercooler 2. Multi Pressure Systems The COP of a refrigeration system also increases as a result of cascading. The saturated vapor in stream 6 recycled back into the upper cycle, has a high enthalpy. x�bb2e`b``Ń3� ���ţ�1�x4>F�c$a� ��� The cases of single-stage and multi-stages compression have been … A refrigeration system is a combination of components and equipment connected in a sequential order to produce the refrigeration effect. Looks like you’ve clipped this slide to already. 2. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 0000003151 00000 n �e0 No public clipboards found for this slide, Attended Tirumala Engineering College, Jonnalagadda(Post), Narasaraopet, PIN-522601(CC-NE). Vapour absorption cycles are not used now a days and has been phased out towards the 0000005107 00000 n In two stages shows a block refrigerant is compressed in the first stage and after desuperheated with intercooler, further compressed in the second stage. The capacity and efficiency of the refrigeration system quickly diminish as the difference between the suction and condensing temperature rises. �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�j@�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= Twin shell type 2. Advantages of multi-staging in vapor compression system: Advantages of multi-staging in vapor compression system are : 1. Explain in brief Multi-Stage Vapour Compression Refrigeration Systems Ans: A single stage vapour compression refrigeration system has one low side pressure (evaporator pressure) and one high side pressure (condenser pressure). Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 5.2 VAPOUR COMPRESSION SYSTEMS The challenge in refrigeration and air conditioning is to remove heat from a low temperature source and dump it at a higher temperature sink. The saturated vapor in stream 6 recycled back into the upper cycle, has a high enthalpy. It reduces leakage of refrigerant 4. Multistage Vapor-Compression Refrigeration Cycle. Multistage Vapor-Compression Refrigeration Cycle. 0000005616 00000 n 0000003477 00000 n Interactive computer routines have been composed, in BASIC language, in order to permit the prediction of the performances of simple, multi-evaporator multi-stage compressor vapour-compression refrigerators when employing refrigerant R-11, R-12, R-22 or R-502. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 0000001474 00000 n If input of compressor is superheated vapor… These are the evaporator, condenser, compressor and the expansion valve. View and Download PowerPoint Presentations on Vapor Compression Refrigeration Cycle PPT. Multi-Stage Vapour Compression Refrigeration Systems Nagendra M CBM Engineer, Hindusthan Zink .Ltd The objectives of this lesson are to: 1. ChemE 260 Vapor-Compression Refrigeration Cycles & Enhanced VCR Cycles Dr. William Baratuci Senior Lecturer Chemical Engineering Department University of Washington – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7763ba-MzIwY �x������- �����[��� 0����}��y)7ta�����>j���T�7���@���tܛ�`q�2��ʀ��&���6�Z�L�Ą?�_��yxg)˔z���çL�U���*�u�Sk�Se�O4?׸�c����.� � �� R� ߁��-��2�5������ ��S�>ӣV����d�`r��n~��Y�&�+`��;�A4�� ���A9� =�-�t��l�`;��~p���� �Gp| ��[`L��`� "A�YA�+��Cb(��R�,� *�T�2B-� • The ordinary vapor-compression refrigeration systems are simple, inexpensive, reliable, and practically maintenance-free. 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