{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T05:29:30Z","timestamp":1762061370732,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2022,7,27]],"date-time":"2022-07-27T00:00:00Z","timestamp":1658880000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"The Fundamental Research Funds for the Central Universities","award":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"],"award-info":[{"award-number":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"]}]},{"DOI":"10.13039\/501100001809","name":"The National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"],"award-info":[{"award-number":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"The Beijing Outstanding Young Scientists Program","award":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"],"award-info":[{"award-number":["YWF-21-BJ-J-613","51875012","BJJWZYJH01201910006021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>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 \u00b0C, 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.<\/jats:p>","DOI":"10.3390\/e24081035","type":"journal-article","created":{"date-parts":[[2022,7,27]],"date-time":"2022-07-27T21:11:05Z","timestamp":1658956265000},"page":"1035","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Energy Analysis of Precooling Air Compressor System"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6940-5135","authenticated-orcid":false,"given":"Yu","family":"Hu","sequence":"first","affiliation":[{"name":"School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China"},{"name":"Pneumatic and Thermodynamic Energy Storage and Supply Beijing Key Laboratory, Beijing 100191, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2488-1928","authenticated-orcid":false,"given":"Weiqing","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China"},{"name":"Pneumatic and Thermodynamic Energy Storage and Supply Beijing Key Laboratory, Beijing 100191, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3752-8522","authenticated-orcid":false,"given":"Guanwei","family":"Jia","sequence":"additional","affiliation":[{"name":"School of Physics & Electronics, Henan University, Kaifeng 475004, China"}]},{"given":"Guangyao","family":"Li","sequence":"additional","affiliation":[{"name":"School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China"},{"name":"Pneumatic and Thermodynamic Energy Storage and Supply Beijing Key Laboratory, Beijing 100191, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5633-6951","authenticated-orcid":false,"given":"Maolin","family":"Cai","sequence":"additional","affiliation":[{"name":"School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China"},{"name":"Pneumatic and Thermodynamic Energy Storage and Supply Beijing Key Laboratory, Beijing 100191, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1121","DOI":"10.1016\/j.egypro.2015.12.137","article-title":"Energy saving potential in existing volumetric rotary compressors","volume":"81","author":"Vittorini","year":"2015","journal-title":"Energy Procedia"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1038\/ngeo2105","article-title":"Reconciling warming trends","volume":"7","author":"Schmidt","year":"2014","journal-title":"Nat. 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