制冷学报Issue(5)：107-112,6.DOI:10.3969/j.issn.0253-4339.2015.05.0107
汽车空调热力膨胀阀容量测试系统的研制
Development of Testing System on Thermal Expansion Valve Capacity
颜吉亮 1王玉刚 1耿丽萍 1王清平2
作者信息
- 1. 中国计量学院计量测试工程学院 杭州 310018
- 2. 中石油塔里木油田分公司质量检测中心 库尔勒 841000
- 折叠
摘要
Abstract
Thermal expansion valve’s flow characteristic under different conditions is one of the most important factors affecting refrigera-tion system performance. So it is necessary to detect the actual refrigerant flow of thermal expansion valve. A thermal expansion valve test-bench was developed and its range of refrigerating capacity was 1. 7-10 kW. In the system, in order to avoid the influence of flow resist-ance difference of the high pressure part on the measured results, inlet pressure of expansion was treated as the testing condition. The un-certainty of flow measurement is 0. 5% and temperature control accuracy is ± 0. 5℃. Performance of a 7 kW capacity H-type thermal ex-pansion valve was tested in the standard condition, and the property of flow-opening, temperature-opening, flow-temperature was acquired and analyzed. In the thermal expansion valve’s work range, the flow increases linearly with the increase of temperature. Through the quan-titative analysis of thermal expansion valve’s gain and hysteresis, the performance of thermal expansion valve is judged.关键词
汽车空调/热力膨胀阀/开度/流量Key words
automobile air-conditioning/thermal expansion valve/opening/flow分类
建筑与水利引用本文复制引用
颜吉亮,王玉刚,耿丽萍,王清平..汽车空调热力膨胀阀容量测试系统的研制[J].制冷学报,2015,(5):107-112,6.
