Transcritical R41 Single-Stage Compression Heat Pump Cycle with Internal Heat Exchanger

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Transcritical R41 Single-Stage Compression Heat Pump Cycle with Internal Heat Exchanger

更新时间：2025-07-09

- Transcritical R41 Single-Stage Compression Heat Pump Cycle with Internal Heat Exchanger
- Vol. 45, Issue 3, Pages: 35-39(2011)
- 作者机构：
  
  西安交通大学制冷与低温工程研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB61
- Online First：10 March 2011，
  
  Published：2011
- 稿件说明：
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Transcritical R41 Single-Stage Compression Heat Pump Cycle with Internal Heat Exchanger[J]. 2011, 45(3): 35-39.
DOI：

Transcritical R41 Single-Stage Compression Heat Pump Cycle with Internal Heat Exchanger[J]. 2011, 45(3): 35-39. DOI：

摘要

建立了跨临界单级压缩带回热器热泵系统的理论模型

并对R41(一氟甲烷)与CO

的循环特性进行了热力性能和火用的分析比较.结果表明:两种工质在常温下进行跨临界循环

R41系统的整体性能优于CO

系统.在选定工况下

R41系统比CO

系统的最优高压侧压力平均降低40.6%以上

系统性能系数平均提高14.2%以上

系统火用效率平均提高14.3%

且R41系统在单位质量制热量和压缩机排气温度方面均优于CO

系统.最后提出了通过减小气体冷却器传热温差、降低节流压差

以及合理利用蒸发器冷量来提高系统火用效率的观点.

Abstract

A theoretical model for the transcritical single-stage compression heat pump cycle with an internal heat exchanger was established

and the performances of the cycles using R41(fluoromethane)and CO

were analyzed respectively. The results show that both of them run in the transcritical ones at normal temperature

and the R41 cycle displays better comprehensive performance than that of the CO

cycle. Compared with the CO

cycle under the specified conditions

the average value of the optimal high side pressure of the R41 cycle decreases by more than 40.6% and the COP increases by over 14.2%

and the second law efficiency increases by 14.3%. Moreover

the greater heating capacity and the lower discharge temperature of the R41 cycle can be obtained. In addition

an idea was put forward to improve the exergy efficiency of system by reducing the tempera

ture difference of gas cooler and the pressure difference of throttling process

and making full use of the cold energy in the evaporator.

关键词

Keywords

references

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