风速分布对单流路双排管蒸发器性能影响的模拟研究

黄东; 孙敏超; 贾杰楠; 吴蓓

您当前的位置：

首页 >

文章列表页 >

风速分布对单流路双排管蒸发器性能影响的模拟研究

更新时间：2025-07-09

- 风速分布对单流路双排管蒸发器性能影响的模拟研究
- Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path
- 西安交通大学学报 2009年43卷第5期页码：36-39+65
- 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：
  
  : 2008-09-25. 作者简介: 黄东(1975-),男,博士,副教授. 基金项目: 教育部长江学者和创新团队发展计划资助项目(IRT0746)
- DOI：
  中图分类号： TB65
- 网络首发：2009-05-10，
  
  纸质出版：2009
- 稿件说明：
移动端阅览
黄东, 孙敏超, 贾杰楠, 等. 风速分布对单流路双排管蒸发器性能影响的模拟研究[J]. 西安交通大学学报, 2009,43(5):36-39+65.

Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path[J]. 2009, 43(5): 36-39+65.
黄东, 孙敏超, 贾杰楠, 等. 风速分布对单流路双排管蒸发器性能影响的模拟研究[J]. 西安交通大学学报, 2009,43(5):36-39+65. DOI：

Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path[J]. 2009, 43(5): 36-39+65. DOI：

摘要

利用EVAP-COND软件计算分析了风速均匀以及风速呈下三角、上三角、中三角分布对单流路双排管蒸发器性能的影响

结果表明:风速均匀分布时蒸发器换热量最大

比最小值大12%; 第1排管的换热量是产生差别的主要原因

而它又取决于传热系数分布; 风速呈下三角分布时第1排管传热系数的峰值、最小值都比其他风速分布时的小

蒸发器换热量最小; 风速呈上三角分布时第1排管传热系数的峰值最大

最小值比呈下三角分布时的大

蒸发器换热量仅次于风速均匀分布时的换热量.风速分布形状对传热温差的影响程度远比对传热系数的影响要小.

Abstract

The effects of the airflow with the same flow rate and different air front velocity distributions on the performance of a two-row finned tube evaporator were numerically studied by the software EVAP-COND 2.1. The air velocity distribution was in four shapes

such as rectangle

two triangles with upper and lower right angles

and isosceles triangle. The results showed that the evaporator capacity for the rectangle shape was the greatest and was 12% more than the smallest one for the triangle shape with lower right angle. The heat transfer performance of the first row tube caused by the local heat transfer coefficients distribution made a major contribution to the difference in the evaporator capacity. The maximum and minimum values of the heat transfer coefficients in the first row tube were smaller for the triangle with lower right angle than those for the other three air velocity shapes

leading to the smallest evaporator capacity. Moreover

the maximum value of the heat transfer coefficients in the first row tube was the greatest for the triangle with upper right angle

and the minimum was bigger than that for the triangle with lower right angle. Hence

the evaporator capacity for the triangle with upper right angle was only smaller than that for rectangle shape. In addition

the air velocity distribution had a smaller effect on the air-and-refrigerant temperature difference than on the heat transfer coefficient.

关键词

Keywords

references

CHWALOWSKI M, DIDION D A, DOMANSKI P A. Verification of evaporator computer models and analysis of performance of an evaporator coil [J]. ASHRAE Transaction, 1989, 95(2): 1229-1236.

DOMANSKI P A. Simulation of an evaporator with nonuniform one-dimensional air distribution [J]. ASHRAE Transaction, 1991, 97(1): 793-802.

AGANDA A A, CONEY J E R, SHEPPARD C G W. Airflow maldistribution and the performance of a packaged air conditioning unit evaporator [J]. Applied Thermal Engineering, 2000, 20(6): 515-528.

LEE J H, KWON Y C, KIM M H. An improved method for analyzing a fin and tube evaporator containing a zeotropic mixture refrigerant with air maldistribution [J]. International Journal of Refrigerant, 2003, 26(2): 707-720.

DOMANSKI P A. EVAP-COND 2.1: simulation models for finned-tube evaporator and condenser [CP/OL]. Gaithersburg, USA: National Institute of Standards and Technology, 2006[2006-08-12]. http:∥www2.bfrl.nist.gov/software/EVAP-COND.

DOMANSKI P A. Finned-tube evaporator model with a visual interface [C]∥20th International Congress of Refrigeration. Sydney, Australia: International Institute of Refrigeration, 1999: 1-7.

DOMANSKI P A, YASHAR D, KIM M. Performance of a finned-tube evaporator optimized for different refrigerants and its effect on system efficiency [J]. International Journal of Refrigeration, 2005, 28(6): 820-827.

黄东,陈群,袁秀玲.支路数对热泵空调中冷凝和蒸发两用换热器性能的影响[J]. 西安交通大学学报, 2007,41(5):543-548.

HUANG Dong, CHEN Qun, YUAN Xiuling. Effect of circuit number on the indoor coil serving as both condenser and evaporator in heat pump [J]. Journal of Xi'an Jiaotong University, 2007, 41(5): 543-548.

黄东,李权旭,吴蓓,等. 流路布置对热泵空调中冷凝和蒸发两用换热器性能的影响[J]. 西安交通大学学报, 2008, 42(9): 1107～1112.

HUANG Dong, LI Quanxu, WU Bei, et al. Effect of refrigerant circuitry on indoor coil serving as condenser and evaporator in heat pump. [J]. Journal of Xi'an Jiaotong University, 2008, 42(9): 1107～1112.

LIANG S Y, WONG T N, NATHAN G K. Study on refrigerant circuitry of condenser coils with exergy destruction analysis [J]. Applied Thermal Engineering, 2000, 20(6): 559-577.

LIANG S Y, WONG T N, NATHAN G K. Numerical and experimental studies of refrigerant circuitry of evaporator coils [J]. International Journal of Refrigeration, 2001, 24(8): 823-833.

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

风速分布对双排管两流路蒸发器性能影响的模拟研究

制冷工质R245fa在水平不锈钢强化管外冷凝和沸腾换热性能的实验研究

印刷电路板换热器在超临界二氧化碳布雷顿循环系统中的动态特性研究

支路数对热泵空调中冷凝和蒸发两用换热器性能的影响

R22与R410A热泵中蒸发器性能随支路数变化的比较