人工冰场CO_(2)制冷及热回收系统性能分析  

Performance Analysis of CO_(2) Refrigeration and Heat Recovery System in Ice Rink

作　　者：耿旭东 周啸虎 李锋 司春强 马进 邵双全 GENG Xudong;ZHOU Xiaohu;LI Feng;SI Chunqiang;MA Jin;SHAO Shuangquan(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Huashang International Engineering Co.,Ltd.,Beijing 100069,China)

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074 [2]华商国际工程有限公司,北京100013

出　　处：《工程热物理学报》2023年第5期1154-1160,共7页Journal of Engineering Thermophysics

基　　金：国家重点研发计划项目(No.2019YFF0301504);国家自然科学基金资助项目(No.52076085);华中科技大学学术前沿青年团队资助项目(No.2019 QYTD10)。

摘　　要：针对人工冰场的制冷及热回收需求,提出了一种新型的CO_(2)并行压缩循环,对其进行热力学分析,并与常规循环和喷射循环进行对比,结果表明,并行压缩循环的制冷系数最高,而且随着环境温度降低而升高,该循环在跨临界运行时的最佳排气压力要低于常规循环;并行压缩的热回收量最小,但是制热系数和综合COP最高,而且随着环境温度降低,热回收量和制热系数会降低而综合COP会升高;该系统在全年范围内都能提供高效的制冷以及热回收性能。Based on the demand of refrigeration and heat recovery of ice rink,a new type of CO_(2) parallel compression cycle is proposed,and thermodynamic analysis is carried on this system.The results show that the refrigeration coefficient of parallel compression cycle is the highest,and it would increase with the decrease of ambient temperature.Besides,the optimal discharge pressure of this cycle in transcritical operation is lower than that of conventional cycle.The amount of heat recovered from parallel compression cycle is the smallest,but its coefficient of performance(COP)for heating and comprehensive COP are the highest.Moreover,with the decrease of ambient temperature,the heat recovery and heating coefficient will decrease while the comprehensive COP will increase.In summary,the proposed integrated system can provide efficient refrigeration and heat recovery performance throughout the year.

关 键 词：人工冰场 制冷系统 二氧化碳 并行压缩循环 性能分析 

分 类 号：TB69[一般工业技术—制冷工程]