Energy Analysis of Precooling Air Compressor System |
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| Authors: | Yu Hu Weiqing Xu Guanwei Jia Guangyao Li Maolin Cai |
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| Affiliation: | 1.School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; (Y.H.); (G.L.); (M.C.);2.Pneumatic and Thermodynamic Energy Storage and Supply Beijing Key Laboratory, Beijing 100191, China;3.School of Physics & Electronics, Henan University, Kaifeng 475004, China; |
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| Abstract: | ![]()
Energy saving is one of the main technique routes for net zero carbon emissions. Air compressor systems take up a large part of energy consumption in the industrial field. A pre-cooling air compressor system was proposed for energy saving by cooling the air before it flows in a compressor. The energy efficiency of the proposed system was analyzed. As additional energy consumption is required for air cooling, the feasibility of the pre-cooling method for energy saving was analyzed. As the efficiency of the pre-cooling air compressor system is mainly influenced by the environment temperature and humidity, applicability of the system in different regions and at different seasons was discussed. A pilot project was performed to verify the technical feasibility and economics of the proposed system. When the precooling temperature of the pilot system was set to 2 °C, the annual pneumatic-electrical ratio of the system can be increased by approximately 2% in several regions of China. This paper shows the pre-cooling air compressor system is feasible for energy saving. |
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| Keywords: | air compressor system energy conservation technology pre-cooling pneumatic-electrical ratio |
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