Title: Second law based performance analysis of seawater source cascade heat pump system: a case study

Authors: S.K. Tyagi, S. Anand, S.R. Park, V.V. Tyagi

Addresses: School of Infrastructure Technology and Resource Management, Shri Mata Vaishno Devi University, Katra 182320 (J&K), India. ' School of Infrastructure Technology and Resource Management, Shri Mata Vaishno Devi University, Katra 182320 (J&K), India. ' Geothermal Energy Research Centre, Korea Institute of Energy Research, P.O. Box 103, Yuseong-gu, Daejeon 305-343, South Korea. ' Centre for Energy Studies, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India

Abstract: This paper presents the second law based analysis of a seawater source cascade heat pump system operating with two different refrigerants. The present cascade heat pump system consists of two different heat pumps attached in such a way that the condenser of the first stage heat pump is the evaporator for the second heat pump and the condenser of the second heat pump is attached to the place to be heated. The rate of irreversibility for the low pressure compressor is found to be higher than that of the high pressure compressor.

Keywords: seawater; cascade heat pumps; exergy; irreversibility; heat source; second law; low pressure compressors; high pressure compressors; exergy analysis.

DOI: 10.1504/IJEX.2010.031990

International Journal of Exergy, 2010 Vol.7 No.3, pp.369 - 386

Received: 10 Mar 2009
Accepted: 12 Jul 2009
Published online: 03 Mar 2010 *

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