| 引用本文： |
-
刘业凤,刘帅,肖勇,杨雯婷,张华.CO2 跨临界系统在冷藏车上的应用研究[J].低温物理学报,2023,(1):64-70. [点击复制]
- LIU Yefeng,LIU Shuai,XIAO Yong,YANG Wenting,ZHANG Hua.Application of CO2 Trans-critical Systemin Refrigerated Trucks[J].LOW TEMPERATURE PHYSICAL LETTERS,2023,(1):64-70. [点击复制]
|
|
| 摘要: |
| 采用 CO2 双缸滚动转子压缩机搭建冷藏车用制冷机组, 在焓差室内测试车厢温度(Ta ) 、 压缩机频率(f )与排气压力(P d ) 对排气温度(Td ) 、 制冷量(Q0 ) 和能效比(COP) 的影响, 分析机组用于冷藏车的可行性, 适用的冷藏车类型及最佳运行方式. 结果表明: 名义工况下,Q0 =1 . 47 kW,COP=0. 91 , 满足运输用制冷机组标准. 在环境温度T w =30 ℃ , 车厢温度Ta =0 ℃ 时, 机组最大制冷量为Q0 =2.43 kW, 因此机组可适用于车厢容积18m3 内的D 类冷藏车. 用于上述冷藏车时, 机组最佳运行方式为: 预冷工况下, 车厢温度 Ta >5 ℃ 时, 采用f =140 Hz,P d =10 MPa 运行; 车厢温度Ta ≤5 ℃ 时, 采用f =140 Hz,P d =9 MPa 运行; 运输工况下, 采用f =80 Hz,P d =9 MPa运行. 研究结果为冷藏车用跨临界 CO2 制冷机组的设计与运行方式提供参考. |
| 关键词: 跨临界系统 冷藏车 适用性 最优运行模式 |
| DOI： |
|
| 基金项目: |
|
| Application of CO2 Trans-critical Systemin Refrigerated Trucks |
|
LIU Yefeng, LIU Shuai, XIAO Yong, YANG Wenting, ZHANG Hua
|
| (School of Energy and Power Engineering , University of Shanghai for Science and Technology , Shanghai 200093, China) |
| Abstract: |
| A refrigeration unit for refrigerated truck was built with a CO2 two-cylinder rolling rotor compressor. The performance test was carried out in the enthalpy difference chamber. The effects of carriage temperature (Ta), compressor frequency (/) and discharge pressure (Pd) on discharge temperature (Td), cooling capacity (Qo)and coefficient of performance (COP) were tested. The feasibility of the unit for refrigerated vehicles, the applicable type of refrigerated trucks and the optimal operation mode were analyzed. The results show that under nominal conditions9 Q0 = l. 47 kW, COP = 0. 91, which meets the transportation refrigeration unit standard. When the ambient temperature Tw = 30 ℃ and the carriage temperature Ta = 0 ℃ , the maximum cooling capacity is Qo = 2. 43 kW. Therefore, the unit can be applied to Class D refrigerated trucks with a compartment volume of 18 m3. For the above refrigerated truck, the optimal operation mode of the unit is： under the pre-cooling condition, when the carriage temperature Ta>5 ℃ , /= 140 Hz, Pd = 10 MPa； when the carriage temperature Ta^5 ℃ , f —140 Hz, Pd = 9 MPa； under transport conditions, / = 80 Hz, Pc\= 9 MPa. The research results provide a reference for the design and operation of trans-critical CO2 refrigeration units for refrigerated trucks. |
| Key words: CO2 Trans-critical system Refrigerated truck Applicability Optimal operating mode |
