| 摘要: |
| 室内冰场的主要能源需求为制冷和用热，若制冷系统能同时满足冷热两方面需求，可大幅提高运行效率。本文以天津地区某1 800 m2冰球场为研究对象，对带热回收的室内冰场CO2制冷系统进行分析，提出了系统实际运行时全年综合利用系数ACOPhc，并基于冰球场实际用热需求对4种充分利用余热的热回收系统进行对比。结果表明：加入热回收的CO2制冷系统运行更平稳，压缩机排气直接与用热设备进行热量交换的冰场双级压缩制冷系统全年运行效率最高，为6.77，冬季运行最高可达7.0以上。 |
| 关键词: 制冷系统 冰场 热负荷 性能系数 CO2 |
| DOI： |
| Received:December 02, 2021Revised:April 05, 2022 |
| 基金项目:国家重点研发计划(2021YFF0306801)资助项目。 |
|
| Design and Analysis of CO2 Refrigeration System for Indoor Ice Rink with Heat Recovery |
|
Yao Yao1, Li Minxia1, Dang Chaobin2, Dong Liwei1, Ma Yitai1, Tian Hua1, Wang Pai1
|
| (1.Key Laboratory of High Efficiency Utilization of Medium and Low Temperature Heat Energy, Ministry of Education, Tianjin University;2.Fukui University) |
| Abstract: |
| The main energy requirements of indoor ice rinks are refrigeration and heat. If the refrigeration system can simultaneously meet the refrigeration and heating loads, the system efficiency can be significantly improved. In this study, the CO2 refrigeration system of an indoor ice rink with heat recovery is analyzed, considering an 1800 m2 ice hockey rink in Tianjin, China, as the research object. The actual comprehensive utilization coefficient (ACOPhc) is proposed. Four heat recovery systems that maximize the use of discharged heat were compared based on the actual heat consumption requirements of the system. The results demonstrate that the CO2 refrigeration system with heat recovery runs more smoothly. The two-stage compression refrigeration system of the ice rink that directly utilized the heat from the discharge gas leads to the highest annual operating efficiency of 6.77; in winter, this value can exceed 7.0. |
| Key words: refrigerating system ice rink heat load coefficient of performance carbon dioxide |
