Title: Energetic and exegetic analysis of a novel multi-generation system using solar power tower

Authors: Muhammad Abid; Victor Oluwatobi Adebayo; Uğur Atikol

Addresses: Department of Energy Systems Engineering, Faculty of Engineering, Cyprus International University, Nicosia, North Cyprus Via Mersin 10, Turkey ' Department of Energy Systems Engineering, Faculty of Engineering, Cyprus International University, Nicosia, North Cyprus Via Mersin 10, Turkey ' Department of Mechanical Engineering, Faculty of Engineering, Eastern Mediterranean University, Famagusta, North Cyprus Via Mersin 10, Turkey

Abstract: In this study, energy and exergy analyses are conducted on a multi-generation system driven by renewable energy source. The system produces power, cooling and domestic hot water as output by means of a gas cycle, a steam cycle, a double-effect absorption chiller and two domestic hot water heaters. Parametric analysis is performed so as to examine the results of altering certain operating conditions; for example ambient temperature and irradiation from the sun on the effectiveness of the system. This solar multi-generation system is seen to have an energetic efficiency of 55.94% and an exergetic efficiency of 29.23%, while the energetic coefficient of performance of the double-effect LiBr-H₂O pair absorption chiller is determined to be 1.253 and the exegetic efficiency of the absorption chiller is 0.3762. The exergy destruction assessment for some of the system components reveals that the receiver of the solar power tower is the component with the highest exergy destruction rate.

Keywords: energetic; exergetic; multi-generation; double-effect absorption chiller; solar energy.

DOI: 10.1504/IJEX.2019.100364

International Journal of Exergy, 2019 Vol.29 No.2/3/4, pp.211 - 235

Received: 01 Nov 2018
Accepted: 26 Feb 2019
Published online: 27 Jun 2019 *

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