Title: Aqua-ammonia-based thermally activated combined power and cooling system

Authors: Kolar Deepak

Addresses: Department of Mechanical Engineering, Vardhaman College of Engineering, Shamshabad, Hyderabad – 501218, Telangana, India

Abstract: The use of aqua-ammonia-based power generating system is a promising way to utilise low temperature heat sources originating either from a renewable energy resource or industrial process waste heat up to a temperature of 150°C. A thermally activated combined power and cooling system to produce electricity and refrigeration effect simultaneously has been modelled and analysed. The proposed system is a Kalina cycle-based power generating system that utilises aqua-ammonia as working fluid. Refrigeration effect is produced by the working fluid from the turbine exit. The combined system produces mechanical power and as well as cooling effect simultaneously. A simulation study has been conducted to analyse the performance of the proposed system and to develop the optimum operating parameters. Result shows thermal efficiency of 18.20% operating with the source fluid temperature at 135°C. This research work provides a new approach to produce cooling effect from low temperature heat sources.

Keywords: cogeneration; energy conversion; renewable energy; combined cycle; energy efficiency; waste heat utilisation.

DOI: 10.1504/PIE.2019.102844

Progress in Industrial Ecology, An International Journal, 2019 Vol.13 No.4, pp.332 - 341

Received: 16 May 2018
Accepted: 19 Nov 2018
Published online: 08 Oct 2019 *

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