Theoretical Analysis of N<sub>2</sub>O Transcritical Compression/Ejection Refrigeration Cycle

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Theoretical Analysis of N₂O Transcritical Compression/Ejection Refrigeration Cycle

更新时间：2025-07-09

- Theoretical Analysis of N₂O Transcritical Compression/Ejection Refrigeration Cycle
- Vol. 44, Issue 1, Pages: 66-70(2010)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB61
- Online First：10 January 2010，
  
  Published：2010
- 稿件说明：
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Theoretical Analysis of N₂O Transcritical Compression/Ejection Refrigeration Cycle[J]. 2010, 44(1): 66-70.
DOI：

Theoretical Analysis of N₂O Transcritical Compression/Ejection Refrigeration Cycle[J]. 2010, 44(1): 66-70. DOI：

摘要

为了解决CO

跨临界循环能效低、排气压力高的问题

将天然工质N

O用于跨临界循环

建立了相应的理论模型

比较了N

O和 CO

用于跨临界喷射/压缩制冷循环和简单跨临界循环的性能

并对N

O用于跨临界循环中的热稳定性进行了分析.研究结果表明:N

O系统的性能系数和排气压力均优于CO

性能系数较CO

系统分别增加了13%和9%

而排气压力分别降低了16%和13%; CO

系统采用喷射/压缩跨临界循环后性能系数比简单跨临界循环提高了15.2%

稍高于N

O系统的11.6%

说明使用喷射器对于CO

系统性能提升更为有利.分析了高压侧排气压力、蒸发温度和气体冷却器出口温度对于CO

和N

O跨临界喷射/压缩制冷循环的影响.结果表明:工况变化时N

O和CO

系统性能的变化规律一致

且气体冷却器出口温度越低、蒸发温度越高时

O系统的性能系数增加越明显; 制冷系统中N

O的热稳定性能很好

不会分解.

Abstract

A theoretical model of the transcritical refrigeration cycle with natural refrigerant N

O was established

and the performance of the transcritical compression/ejection cycle and the simple transcritical cycle with N

O was compared with that with CO

. The results show that the coefficient of performance C

COP

of the N

O system increases by 13% for the transcritical compression/ejection cycle and by 9% for the simple transcritical cycle compared with that of the CO

system. However

the discharge pressure decreases by

16% and 13%

respectively. Moreover

the C

COP

of the CO

system increases by 15.2% when adding an ejector while the C

COP

of the N

O system increases by 11.6%

compared with that of the simple transcritical cycle. The influence of the high side discharge pressure

evaporation temperature and gas cooler outlet temperature on the performance of the transcritical compression/ejection cycle with N

O or CO

was also analyzed. The results indicate that the variation trends of the CO

system and the N

O system are similar

and the C

COP

of the N

O system increases more obviously than that of the CO

system when the gas cooler outlet temperature is lower or the evaporation temperature is higher. The analysis on the thermal stability of N

O shows that N

O has good thermal stability and will not be decomposed in the transcritical refrigeration cycle.

关键词

Keywords

references

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⁰

Theoretical Analysis of N2O Transcritical Compression/Ejection Refrigeration Cycle

DOI：

摘要

Abstract

关键词

Keywords

references

Theoretical Analysis of N₂O Transcritical Compression/Ejection Refrigeration Cycle