轻工机械2017，Vol.35Issue(3)：14-19,6.DOI:10.3969/j.issn.1005-2895.2017.03.004
基于力控的空气源热泵热水器系统非稳定性研究
Unstability Study of Air Source Heat Pump Water Heater Based on Force Control
摘要
Abstract
Aiming at operating condition of the air source heat pump water heater changing with the change of heating water temperature, poor system stability and the variation range of coefficient of performance too large during the operation.Adopted force control configuration software as the data acquisition system to design and build the air source heat pump water heater test rig.By studying the change trend of each parameter when the system was running under variable operating conditions, analyzed the influence factors of system stability to improve optimization of system performance.The test results show that, under the condition of the same initial condition, the instantaneous energy efficiency ratio of the system decreases with the increase of the circulating hot water temperature.The rate of decrease of instantaneous energy efficiency ratio increases when the degree of superheat is close to 0 ℃ in the latter stage of heating.The degree of superheat decreases during the operation.The compressor enters the gas-liquid two-phase region when the degree of superheat is 0 ℃.It can improve the working performance of the compressor in a certain extent, but heat transfer of the evaporator side is not inadequate when the gas-liquid two-phase area last for a long time.The running performance of the system is further deteriorated.Superheat is the main factor affecting the efficiency of system from the study of whole instability process.关键词
空气源热泵热水器/力控组态软件/能效比/瞬时能效比Key words
air source heat pump water heater/force control configuration software/COP(coefficient of performance)/instantaneous energy efficiency ratio分类
能源科技引用本文复制引用
袁朝阳,陶乐仁,虞中旸..基于力控的空气源热泵热水器系统非稳定性研究[J].轻工机械,2017,35(3):14-19,6.基金项目
上海动力工程多相流动与传热重点实验室项目(13DZ2260900). （13DZ2260900）
