Thermodynamic investigation and optimization Tri-generation system for the provision of power, heating, and cooling: A case study of Zahedan, Iran

Thermodynamic investigation and optimization Tri-generation system for the provision of power, heating, and cooling: A case study of Zahedan, Iran

Amir Ghasemkhani Said Farahat Mohammad M. Naserian 

Department of Mechanical Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Corresponding Author Email: 
farahat@hamoon.usb.ac.ir
Page: 
904-912
|
DOI: 
https://doi.org/10.18280/ijht.360317
Received: 
5 December 2017
| |
Accepted: 
20 April 2018
| | Citation

OPEN ACCESS

Abstract: 

The main purpose of this research is the thermodynamic analysis of the tri-generation system based on energy efficiency, exergy efficiency, and power. The trigeneration system under study consists of three subsystems that including the solar subsystem, Kalina subsystem, and lithium bromide-water absorption chiller subsystem. The proposed system generates power, cooling and hot water by using solar energy. The system studied is designed and analyzed based on the weather condition in Zahedan, Iran. According to the exergy analysis, the most exergy destruction rate takes place in the solar cycle. The results of the base-case analysis demonstrate that energy and exergy efficiencies and total cost rates are 17.37%, 18.82% and 9.63 dollars per hour, respectively. Furthermore, comparison of optimization criteria such as energy efficiency, exergy efficiency, and power are discussed. The results show power is the best criteria for thermodynamic optimization. The results of trigeneration system optimization based on maximum power criterion show that produced power, energy efficiency, exergy efficiency and total cost rate increase 28%, 12.32%, 13.97% and 7.68%, respectively in comparison with the base-case. As a result, this research is proved that thermodynamic investigation is closer to the ideal state in power criterion.

Keywords: 

exergy analysis, kalina cycle, trigeneration, solar energy, finite time thermodynamics

1. Introduction
2. System Description
3. Energy and Exergy Analysis
3. System Energy and Exergy Efficiency
4. Economic Analysis
5. Results and Discussion
6. Optimization
7. Conclusion
Nomenclature
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