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Energies 2018, 11(10), 2679; https://doi.org/10.3390/en11102679

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

School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei, China
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Received: 4 September 2018 / Revised: 24 September 2018 / Accepted: 7 October 2018 / Published: 9 October 2018
(This article belongs to the Special Issue Solar Thermal Energy Utilization Technologies in Buildings)
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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–H2O 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. View Full-Text
Keywords: solar cooling system; absorption chiller; solar energy; parabolic trough solar collector (PTC) solar cooling system; absorption chiller; solar energy; parabolic trough solar collector (PTC)
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Wang, J.; Yan, R.; Wang, Z.; Zhang, X.; Shi, G. Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors. Energies 2018, 11, 2679.

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