EFFECT OF ATMOSPHERIC HUMIDITY AND TEMPERATURE ON DESIGN AND OPERATION OF BIG-CAPACITY COMPRESSOR TRAIN AND WATER CONDENSATION

Zhang Xu; Li Yanghai; Cao Fuyi; Wang Tingju; Sun Li

doi:10.19912/j.0254-0096.tynxb.2024-1750

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 688-701. DOI: 10.19912/j.0254-0096.tynxb.2024-1750

EFFECT OF ATMOSPHERIC HUMIDITY AND TEMPERATURE ON DESIGN AND OPERATION OF BIG-CAPACITY COMPRESSOR TRAIN AND WATER CONDENSATION

Zhang Xu¹, Li Yanghai², Cao Fuyi¹, Wang Tingju³, Sun Li¹

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Abstract

This study aimed to investigate how the atmospheric humidity and environment temperature of air affect the performance of a 300 MW compressed air energy storage power plant. A comprehensive mathematical model accounting for high-precision air physical properties was developed. The results show that assuming air behave as an ideal gas results in a smaller design capacity than in reality, leading to insufficient heat and power supply, particularly at high pressure and temperature. Additionally, the influence of the atmospheric humidity and environment temperature on the operational characteristics of compressors were studied. An increase in atmospheric humidity and environment temperature reduces the output of the compression system, requiring a larger opening of the frequency converter and a longer charging time to maintain the design pressure of the air reservoir. Finally, water condensation is most intense at Stages 1 and 2 for both intermediate and high-temperature scenarios. As the atmospheric humidity and temperature increase, more water condenses for every stage and the position where condensation happens moves ahead. Operators must address this issue by monitoring the position of condensation and taking appropriate measures.

Key words

atmospheric humidity / compressed air energy storage / environment temperature / high-precision physical properties / water condensation / compressor

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Zhang Xu, Li Yanghai, Cao Fuyi, Wang Tingju, Sun Li. EFFECT OF ATMOSPHERIC HUMIDITY AND TEMPERATURE ON DESIGN AND OPERATION OF BIG-CAPACITY COMPRESSOR TRAIN AND WATER CONDENSATION[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 688-701 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1750

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