| CO2跨临界膨胀机循环最佳高压压力计算 |
| |
| 引用本文： | 杨俊兰,马一太,曾宪阳,刘圣春.CO2跨临界膨胀机循环最佳高压压力计算[J].流体机械,2006,34(12):62-65,55. |
| |
| 作者姓名： | 杨俊兰 马一太 曾宪阳 刘圣春 |
| |
| 作者单位： | 1. 天津大学,天津,300072;天津城市建设学院,天津,300384
2. 天津大学,天津,300072 |
| |
| 基金项目： | 国家自然科学基金项目（506476064） |
| |
| 摘 要： | CO2跨临界制冷循环存在最佳高压压力，对应着最大COP。但是，膨胀机循环的最佳高压压力与节流阀循环的最佳高压压力不同。CO2膨胀机循环的最佳高压压力主要受压缩机效率、膨胀机效率、气体冷却器出口温度以及蒸发温度等参数的影响。当压缩机和膨胀机的效率一定时，CO2节流阀循环的最佳高压压力比膨胀机循环的高。为了计算方便，对膨胀机循环的最佳高压压力进行了计算和数据回归，并给出了计算关联式。
|
| 关 键 词： | CO2跨临界循环 膨胀机 节流阀 最佳高压压力 |
| 文章编号： | 1005-0329（2006）12-0062-04 |
| 收稿时间： | 2006-02-22 |
| 修稿时间： | 2006-02-22 |
Calculation of the Optimal Heat Rejection Pressure of CO2 Transcritical Expander Cycle |
| |
| YANG Jun-lan,MA Yi-tai,ZENG Xian-yang,LIU Sheng-chun.Calculation of the Optimal Heat Rejection Pressure of CO2 Transcritical Expander Cycle[J].Fluid Machinery,2006,34(12):62-65,55. |
| |
| Authors: | YANG Jun-lan MA Yi-tai ZENG Xian-yang LIU Sheng-chun |
| |
| Affiliation: | 1. Tianjin University, Tianjin 300072, China;2. Tianjin Institute of Urban Construction,Tianjin 300384, China |
| |
| Abstract: | There is an optimal heat rejection pressure existing in the CO2 transcritical refrigeration cycle that gives a maximum COP. Whereas, the optimal heat rejection pressure in the expander cycle is different from that of in the throttle valve cycle. The optimal heat rejection pressure in the CO2 expander cycle mainly depends on the compressor efficiency, expander efficiency, the outlet temperature of the gas cooler and the evaporation temperature, etc. When the compressor and the expander efficiencies are given, the optimal heat rejection pressure in the CO2 throttle valve cycle is greater than that of in the expander cycle. In order to calculate conveniently, the values of the optimal heat rejection pressure in the expander cycle are regressed, and a calculation correlation is obtained. |
| |
| Keywords: | CO2 transcritical cycle expander throttle valve optimal heat rejection pressure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
