Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path

您当前的位置：

首页 >

文章列表页 >

Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path

更新时间：2025-07-09

- Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with One Flow Path
- Vol. 43, Issue 5, Pages: 36-39+65(2009)
- 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： TB65
- Online First：10 May 2009，
  
  Published：2009
- 稿件说明：
移动端阅览
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：

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.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Simulation of Effect of Air Velocity Distribution on Performance of Two-Row Finned Tube Evaporator with Two Circuits

Experimental Investigation on the Condensation and Boiling Heat Transfer Performance of Refrigerant R245fa Outside Horizontal Stainless Steel Enhanced Tubes

Dynamic Characteristic Analysis of Printed Circuit Heat Exchangers in Supercritical Carbon Dioxide Brayton Cycle Systems

Effect of Circuit Number on the Indoor Coil Serving as Both Condenser and Evaporator in Heat Pump

Performance Comparison of Evaporator with Circuit Number Change in Heat Pump Using R22 and R410A

Related Author

黄东

李权旭

TAO Wenquan

JI Wentao

CHENG Yulin

ZHANG Nannan

ZHANG Fu

CHEN Man

Related Institution

School of Energy and Power Engineering，Xi'an Jiaotong University

MOE Key Laboratory of Thermo-Fluid Science and Engineering，Xi'an Jiaotong University

Gansu Lanke Petrochemical High-Tech Equipment Co.，Ltd.

(School of Energy and Power Engineering, Xi'an Jiaotong University,,)

⁰