文献类型：期刊文献

中文题名：空气源热泵系统换热器及机组性能的实验研究

英文题名：Experimental study on performances of heat exchanger and unit in air source heat pump system

作者：杨卫芳[1];桂超[1];刘亚萍[1];冯士伟[1]

第一作者：杨卫芳

机构：[1]新乡学院土木工程与建筑学院,河南新乡453000

第一机构：新乡学院土木工程与建筑学院

年份：2022

卷号：50

期号：11

起止页码：26-30

中文期刊名：化学工程

外文期刊名：Chemical Engineering(China)

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

语种：中文

中文关键词：空气源热泵;换热系数;强化管;翅型;压缩比;等熵耗功

外文关键词：air source heat pump;heat transfer coefficient;enhanced tube;fin shape;compression ratio;isentropic power consumption

摘要：基于现有的实验测试平台,实验分析了质流密度、干度、风速、翅片形状、蒸发温度、冷凝温度等实验变量对空气源热泵系统性能的影响规律。经实验验证:强化管内换热特性均优于光滑管,在冷凝换热实验中,管内换热系数与质流密度、干度均成正相关,而在沸腾换热实验中,管内换热系数随干度的增加呈现先增大后减小的变化趋势;3种不同翅型换热器,其换热特性优劣顺序为桥片型翅片换热器、百叶窗型翅片换热器、波纹型翅片换热器,而对于同一翅型换热器,空气侧换热系数与风速呈正相关、与翅片间距呈负相关;工况环境主要通过影响压缩机吸排气饱和压力影响机组性能,即压缩机压缩比的增加导致等熵耗功的增大,进而使系统性能降低。
Based on the existing experimental test platform,the influences of mass flux,vapor quality,wind speed,fin shape,evaporation temperature and condensation temperature on the performance of air source heat pump system were analyzed experimentally.The experimental results show that the heat transfer characteristics of enhanced tube is better than that of the smooth tube,in condensation heat transfer experiment,the heat transfer coefficient inside the tube is positively correlated with mass flux and vapor quality,but in boiling heat transfer experiment,the heat transfer coefficient increases firstly and then decreases with increasing vapor quality.The heat transfer characteristics of three different finned heat exchangers are in the order of bridge-fin heat exchanger,louver-fin heat exchanger and corrugated-fin heat exchanger,and for the heat exchanger with the same fin,the air-side heat transfer coefficient is positively correlated with wind speed and negatively correlated with fin space.Working conditions mainly affect the unit performance by affecting suction and exhaust pressure of compressor,that is,the increase of compressor compression ratio leads to the increase of the isentropic power consumption,and then the decrease of system performance.