Parametric study and optimization of a novel geothermal-driven combined cooling, heating, and power (CCHP) system

Sobhan Ghorbani, Mahdi Deymi-Dashtebayaz, Daryoush Dadpour and Mostafa Delpisheh

Energy, 2023, vol. 263, issue PF

Abstract: To reduce energy-related costs, integrating cogeneration systems is one of the most apposite avenues. Herein, a combined cooling, heating, and power (CCHP) cogeneration system grounded on geothermal (GTh) energy heat recovery is introduced. Accordingly, the cogeneration system comprises three subsystems, namely, the Kalina cycle (KC), ejector refrigeration cycle (ERC), and organic Rankine cycle (ORC). A comprehensive program is developed to address energy, exergy, and exergoeconomic analyses. Also, the TOPSIS multi-objective optimization method is used to select the optimal parameters at four different GTh heat source temperatures with the objective parameters of Net output power, Total investment cost (Ztot), and exergy efficiency. Thermal efficiency, exergy efficiency, Ztot, total exergy destruction rate, net power production capacity, and cycle cooling capacity were gauged under optimal conditions with a GTh temperature of THS = 490 K at 23.04%, 26.55%, 45944.49 $/yr, 226 kW, 75.17 kW, and 111.6 kW. In addition, the parametric study indicated that the increase in GTh heat source temperature, ammonia concentration, and KC flow rate (m˙1) reduces the thermal efficiency and increases Ztot. Finally, the effective system parameters, including ΔTcon2 and evaporator temperature were optimized for the different configurations using the Pareto multi-objective method. The optimal point of ΔTcon2 at the GTh heat source temperatures 480, 490 and 495 K are 14.58, 14.38 and 14.58 K respectively. Likewise, the optimal points based on the evaporator temperature at the GTh heat source temperatures 480, 485, 490 and 495 are 287.4, 279.3, 279.3, and 279.3 K, respectively.

Keywords: Geothermal (GTh) energy; Kalina cycle (KC); Ejector refrigeration cycle (ERC); Organic Rankine cycle (ORC); Exergoeconomic analysis; Optimization (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544222030298
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:263:y:2023:i:pf:s0360544222030298

DOI: 10.1016/j.energy.2022.126143

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().