Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors

Jiangjiang Wang, Rujing Yan, Zhuang Wang, Xutao Zhang and Guohua Shi
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Jiangjiang Wang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China
Rujing Yan: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China
Zhuang Wang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China
Xutao Zhang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China
Guohua Shi: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China

Energies, 2018, vol. 11, issue 10, 1-17

Abstract: Solar radiation intensity significantly influences the cooling loads of building, and the two are correlated and accorded to a certain extent. This study proposes a double effect LiBr–H 2 O absorption cooling system based on the parabolic trough collector (PTC) of solar heat energy. Thermodynamic models including PTC and absorption chiller are constructed, and their accuracy is verified by comparing the simulation results and the experimental data. Subsequently, the impact of variable design parameters on the thermodynamic performance is analyzed and discussed. The analysis of a solar cooling system in a hotel case study is related to its operation in a typical day, the average coefficient of performance of the absorption chiller is approximately 1.195, and the whole solar cooling system achieves 61.98% solar energy utilization efficiency. Furthermore, the performance comparison of a solar cooling system in different types of building indicates that higher matching and a higher correlation coefficient between the transient solar direct normal irradiance and cooling load is helpful in decreasing the heat loss and improving systemic performance. The solar cooling system in the office building exhibits a correlation coefficient of approximately 0.81 and achieves 69.47% systemic thermal efficiency.

Keywords: solar cooling system; absorption chiller; solar energy; parabolic trough solar collector (PTC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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