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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 6, June 2011 Edition
Economic Water Rate And Optimum Performance Of Two Stage Azeotropic Refrigerating System
Full Text(PDF, 3000)  PP.  
Author(s)
Prof. D.V. Mahindru, Priyanka Mahendru
KEYWORDS
Azeotropes, multistage refrigerating, compressors, water cooled condenser
ABSTRACT
With a view to conserve energy, the use of azeotropes in a multistage refrigerating system is quite timely. Depending upon the requirement, such a system incorporates conventionally either a water cooled or air cooled condenser. The total operating cost of a refrigerating system with a water cooled condenser comprises the cost of water and the cost of electricity needed to drive the compressor(s). There is enough potential for research in finding out the ways to achieve maximum coefficient of performance and the least operating cost simultaneously for multi-stage azeotropic system. However, to avoid overloading of sewage facilities and to comply with municipal codes for the use of water, the water flow rate required in refrigerating system should be minimized.In the present investigation, economic water rates for two stage refrigerating systems, operating on most commonly used azeotropes R-500 and R-502, have been searched out over a wide range of operating limits. Such economic rates, if followed, would produce maximum COP and consume minimum power. The effects of controlling variables, e.g. approach, cost ratio etc have also been studied on the heat transfer to condenser, optimum condensing temperature and economic water rate.
References
1. Buchler,Leon, Economical use of condense water for Amonia Compression refrireration systems, Ice and Refrig, January,1947.

2. Bochmer,Andrew P., Condenser pressure for Air Conditioning,Heating,Piping and air-Cond., p77 and 94,1946.

3. Buchler,Leon, Andrew P., economical of condenser water in compression refrigeration system, journal ASRE, 57,pp. 251-254 March,1949.

4.Mcharness,R.C. and chapman, D.D., Refrigerating capacity and performance data,ASRE J., pp 49-58, January,1962.

5.Downing,R.C. Mixed refrigerants, Service Manual RT-38, EI. Du Pont Nemours company., Wilmington, Delaware U.S.A.

6. Gupta, V.K and Prasad, Manohar, Numerical Estimation of main parameters for realistic Two stage ammonia refrigerating systems, J. Indian Innstitute of Science Bangalore,64,10,pp.219-227,1983.

7. Jordan ,R.C. and Priester, G.B.refrigeration and Air conditioning, Prentice-Hall of India, New delhi,1969.

8. Prasad, Manohar, Refrigeration and air Conditioning, Wiley Eastern, New Delhi,1983.

9.Gupta, V.K., Thermodynamic design data for optimum performance of Two Stage Azeotropic Refrigerating systems, J.Heat Recovery Systems (U.K)

10. Kern,D.Q., Process Heat Transfer, Mv Graw-Hill, Kogakusha, Tokyo,1960.

11.Mahindru, D.V., Economic Water rate and Optimum Performance of Two Stage Azeotropic Refrigerating Systems, a Thesis submitted to Kanpur University in partial fulfillment of the requirements for the degree of Master of Technology, Mechanical Engineering (Design) ,1985.

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