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【摘要】 食品的杀菌与储存是食品加工工艺中必须的两个环节。本文利用第二定律的?分析法对满足食品加工特定水温参数需求的冷热联供CO2热泵与传统锅炉冷水机组进行火用分析比较,分析结果表明冷热联供CO2热泵的?效率高于传统冷水机组?效率相当。最后阐述了冷热联供CO2热泵在食品行业的应用前景。 【Abstract】 sterilization and storage are necessary in food processing.This paper presents the exergetic analysis on both the transcritical carbon dioxide based heat pump for simultaneous heating and cooling application and conventional method which uses chilling water unit.The result indicates that the exergetic efficiency value of the transcritical carbon dioxide based heat pump for simultaneous heating and cooling application is higher than the conventional method's.Finally,The future's application of the transcritical carbon dioxide based heat pump for simultaneous heating and cooling application in the food industry have been well prospected finally. 【关键词】 ?分析; CO2; ?效率; 热泵 【Key words】 exergetic analysis; CO2; exergetic efficiency; heat pump