Indian Journal of Science and Technology

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Enhanced Coefficient of Performance by Effective Suction Line Cooling- an Experimental Report


Affiliations
1 School of Mechanical and Building Sciences, VIT University, Vellore-632014
2 Vignan Institute of Technology and Sciences, Hyderabad - 508284, India
3 Osmania University, Hyderabad - 500007, India
 

The present paper is concerned with theoretical and experimental study and development of effective suction gas heat exchanger for hermetically sealed compressor. A single tube counter flow heat exchanger had been used, where water itself had been taken as a coolant. Energy consumption parameters as well as COP values have been obtained analytically for both the cases. Energy consumption parameter is 12% less as an average for a heat exchanger attached system compared to the system with out heat exchanger in a time span of 90 minutes. COP values obtained with heat exchanger are firmly better than that of the values with out Heat exchanger. COP values observed to be 7% higher for a heat exchanger coupled system compared to the system with out heat exchanger in the same time span of 90 minutes. In the present scenario where systems optimization is a necessity the present work would be useful in developing a energy efficient system with few modifications. This work would be useful to tackle the heat transfer related issues present in many gas compressors used in pumping and process industries.

Keywords

Suction Line Cooling, Heat Exchanger, COP, Refrigeration, T-S Plot, Density, Refrigerant
User

  • Akella Suresh, Rao NJ, Venugopal PV, Venkateswarlu K and Manohar TJ (1986) An experimental method for design and performance evaluation of a hermetic compressor. Proc. 1986 Int. Compressor Eng. Conf. Purdue. 2, 428-443.

  • Edison G, Suresh A and Narayana Rao K (2009) Effect of suction line cooling by incorporating a heat exchanger before a compressor to enhance COP of refrigerator. Int. J. Mech. & Automobile Eng. (IJMAE). 1(1), 01-07.

  • Fabian Fagotti and Alvaro T Prata (1998) A new correlation for instantaneous Heat transfer between Gas and cylinder in reciprocating compressors. Proc. Int. Compressor Technol. Conf., Purdue, West Lafayette, USA. pp: 605-610

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  • Roland Aigner and Herbert Steinrück (2007) Modelling fluid dynamics, Heat transferand valve dynamics in a reciprocating compressor’institute of fluid dynamics and heat transfer. Vienna Univ. Technol., Vienna Austria 5th Conf. EFRC. 3, 21-23, pp: 171-180.

  • Suresh Akella, Rao NJ, Venugopal EV and Manohar TJ (1986) An experimental method for design and performance evalution of a hermetic compressor. Proc. 1986 Int. Compressor Eng. Conf., Purdue. 1, 428-443.

  • Suresh Akella, Rao NJ, Venugopal EV and Manohar TJ (1988) Performance optimization of a 1.5 ton hermetically sealed compressor through parameter design. Proc. 1988 Int. Compressor Eng. Conf., Purdue. 2, 520-525.


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  • Enhanced Coefficient of Performance by Effective Suction Line Cooling- an Experimental Report

Abstract Views: 392  |  PDF Views: 114

Authors

G. Edison
School of Mechanical and Building Sciences, VIT University, Vellore-632014
A. Suresh
Vignan Institute of Technology and Sciences, Hyderabad - 508284, India
K. Narayana Rao
Osmania University, Hyderabad - 500007, India

Abstract


The present paper is concerned with theoretical and experimental study and development of effective suction gas heat exchanger for hermetically sealed compressor. A single tube counter flow heat exchanger had been used, where water itself had been taken as a coolant. Energy consumption parameters as well as COP values have been obtained analytically for both the cases. Energy consumption parameter is 12% less as an average for a heat exchanger attached system compared to the system with out heat exchanger in a time span of 90 minutes. COP values obtained with heat exchanger are firmly better than that of the values with out Heat exchanger. COP values observed to be 7% higher for a heat exchanger coupled system compared to the system with out heat exchanger in the same time span of 90 minutes. In the present scenario where systems optimization is a necessity the present work would be useful in developing a energy efficient system with few modifications. This work would be useful to tackle the heat transfer related issues present in many gas compressors used in pumping and process industries.

Keywords


Suction Line Cooling, Heat Exchanger, COP, Refrigeration, T-S Plot, Density, Refrigerant

References





DOI: https://doi.org/10.17485/ijst%2F2012%2Fv5i10%2F30919