空气源跨临界CO<sub>2</sub>热泵最优排气压力的理论和实验

宋昱龙 1; 唐学平 2; 王守国 1; 杨东方 1; 曹锋 1

doi:10.7652/xjtuxb201409014

您当前的位置：

首页 >

文章列表页 >

空气源跨临界CO₂热泵最优排气压力的理论和实验

更新时间：2025-07-09

- 空气源跨临界CO₂热泵最优排气压力的理论和实验
- Theoretical and Experimental Investigation for Optimal Discharge Pressure of Air-Source Trans-Critical CO₂ Heat Pump
- 西安交通大学学报 2014年48卷第9期页码：81-87
- 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：10.7652/xjtuxb201409014
  中图分类号： TB61
- 网络首发：2014-09-10，
  
  纸质出版：2014
- 稿件说明：
移动端阅览
宋昱龙 1, 唐学平 2, 王守国 1, 等. 空气源跨临界CO₂热泵最优排气压力的理论和实验[J]. 西安交通大学学报, 2014,48(9):81-87. DOI: 10.7652/xjtuxb201409014.

Theoretical and Experimental Investigation for Optimal Discharge Pressure of Air-Source Trans-Critical CO₂ Heat Pump[J]. 2014, 48(9): 81-87. DOI: 10.7652/xjtuxb201409014.
宋昱龙 1, 唐学平 2, 王守国 1, 等. 空气源跨临界CO₂热泵最优排气压力的理论和实验[J]. 西安交通大学学报, 2014,48(9):81-87. DOI: 10.7652/xjtuxb201409014. DOI：

Theoretical and Experimental Investigation for Optimal Discharge Pressure of Air-Source Trans-Critical CO₂ Heat Pump[J]. 2014, 48(9): 81-87. DOI: 10.7652/xjtuxb201409014. DOI：

摘要

为了研究空气源跨临界CO

热泵系统中影响最优排气压力的主要因素

以跨临界CO

热泵机组为平台

在焓差室中进行了制热性能测试。结果表明

系统的蒸发压力和气冷器出口温度随排气压力的上升而下降

过热度随排气压力的上升而上升

制热量与制热能效比随排气压力的上升先上升后下降

且存在一个最优值。综合实验数据可以看出

系统的最优排气压力随着环境温度、进水温度、出水温度的下降而降低。在进水温度(环境水温)没有剧烈变动的条件下

通过数据拟合的方法创新性地提出了以环境温度及出水温度为自变量的预测最优排气压力的实验关联式。实验对比证明

系统运行在预测最优排气压力时

制热能效比与实验最优值的偏差小于1.3%

说明以环境温度及出水温度为自变量的预测最优排气压力的方法是值得同行参考的一种有效方法。

Abstract

To reveal the main factors of the optimal discharge pressure in a trans-critical CO

heat pump system

the heating performance is tested in enthalpy difference laboratory. The results show that the evaporation pressure and temperature in gas-cooler outlet decline with increasing discharge pressure; the superheat increases with discharge pressure; the heating capacity and the coefficient of performance(COP)increase firstly and then drop when discharge pressure rises

indicating that an optimal value exists. According to the test data

it is found that the optimal discharge pressure drops with declining environment temperature

inlet water temperature and outlet water temperature. At un

changed inlet water temperature(ambient water temperature)

an experimental correlation taking environment temperature and outlet water temperature as independent variables is constructed by data fitting to predict the optimal discharge pressure. The experiments indicate that the COP difference between predicted optimal discharge pressure and actual optimal discharge pressure is less than 1.3%.

关键词

Keywords

references

LORENTZEN G. Trans-critical vapour compression cycle device: Switzerland, WO 90/07683[P]. 1990-07-12.

LORENTZEN G, PETTERSEN J. A new, efficient and environmentally benign system for car air-conditioning[J]. International Journal of Refrigeration, 1993, 16(1): 4-12.

KAUF F. Determination of the optimum high pressure for transcritical CO2 refrigeration cycles[J]. International Journal of Thermal Sciences, 1999, 38: 325-330.

LIAO S M, ZHAO T S, JAKOBSEN A. A correlation of optimal heat rejection pressures in transcritical carbon dioxide cycles[J]. Applied Thermal Engineering, 2000, 20: 831-841.

SARKAR J, BHATTACHARYYA S, GOPALM M R. Optimization of a transcritical CO2 heat pump cycle for simultaneous cooling and heating applications[J]. International Journal of Refrigeration, 2004, 27: 830-838.

CHEN Y, GU J. The optimum high pressure for CO2 transcritical refrigeration systems with internal heat exchangers[J]. International Journal of Refrigeration, 2005, 28: 1238-1249.

GE Y T, TASSOU S A. Control optimization of CO2 cycles for medium temperature retail food refrigeration systems[J]. International Journal of Refrigeration, 2009, 32: 1376-1388.

CECCHINATO L, CORRADI M, COSI G, et al. A real-time algorithm for the determination of R744 systems optimal high pressure[J]. International Journal of Refrigeration, 2012, 35(4): 817-826.

林高平, 顾兆林. 跨临界CO2制冷循环性能的研究[J]. 西安交通大学学报, 1998, 32(8): 35-38.

LIN Gaoping, GU Zhaolin. Performance of Super-critical CO2 refrigeration cycle[J]. Journal of Xi'an Jiaotong University, 1998, 32(8): 35-38.

SÁNCHEZ D, TORRELLA E, CABELLO R, et al. Influence of the superheats associated to a semi-hermetic compressor of a transcritical CO2 refrigeration plant[J]. Applied Thermal Engineering, 2010, 30: 302-309.

ZHANG X P, FAN X W, WANG F K, et al. Theoretical and experimental studies on optimum heat rejection pressure for a CO2 heat pump system[J]. Applied Thermal Engineering, 2010, 30: 2537-2540.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

空气源跨临界CO2热泵中回热器影响的研究

R32制冷剂在小管径水平管内的沸腾换热与阻力特性实验研究

三塔合一间接空冷系统结构参数对夏季运行特性的影响研究

水蒸气掺混对氨裂解气旋流燃烧与排放特性的影响研究

超临界水异常区域热力学特性研究

空气源跨临界CO2热泵最优排气压力的理论和实验

Theoretical and Experimental Investigation for Optimal Discharge Pressure of Air-Source Trans-Critical CO2 Heat Pump

DOI：10.7652/xjtuxb201409014

摘要

Abstract

关键词

Keywords

references

空气源跨临界CO₂热泵最优排气压力的理论和实验

Theoretical and Experimental Investigation for Optimal Discharge Pressure of Air-Source Trans-Critical CO₂ Heat Pump