Title: Multi-objective optimisation of a transient solar absorption chiller from energetic, exergetic, and economic viewpoints

Authors: Vajihe Davoodi; Mahdi Deymi-Dashtebayaz; Ehsan Amiri Rad

Addresses: Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran ' Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran ' Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran

Abstract: An integrated solar absorption system is investigated in the present study. It consists of evacuated tube collectors, an auxiliary heater, a storage tank, and a LiBr-water absorption chiller. The system is conducted hourly from April to September. Variables of generator temperature, storage tank volume, and solar collector area are considered for the investigation. An optimisation method is performed to find the optimum point from energetic, exergetic, and economic viewpoints. By using the TOPSIS method, the optimum point is obtained at a generator temperature of 100°C, storage tank volume of 3.1 m³, and collector area of 30 m².

Keywords: solar absorption chiller; exergy efficiency; multi-objective optimisation; TOPSIS method.

DOI: 10.1504/IJEX.2023.134605

International Journal of Exergy, 2023 Vol.42 No.2, pp.159 - 178

Received: 01 Apr 2022
Received in revised form: 17 Jan 2023
Accepted: 19 Jan 2023
Published online: 30 Oct 2023 *

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