技术中心

【英文篇名】 Experiment of capacity control by altering concentrations of the mixture refrigerant 【作者中文名】 杨昭; 马一太; 赵三元; 张少凡; 【作者英文名】 By Yang Zhao; Ma Yitai; Zhao Sanyuan and Zhang Shaofan; 【作者单位】 天津大学热能研究所; 河北建筑工程学院; 【文献出处】 暖通空调, Hv 空调; 容量调节; 混合物; 【英文关键词】 heat pump; air conditioning; capacity regulating; mixture; 【摘要】 提出了制冷热泵容量调节的物理模型，建立混合工质变浓度容量调节制冷系统试验装置，进行了相同工况下变浓度对比测试及多工况变浓度稳态试验。证明所建立的混合工质变浓度试验装置及所选择的工质可以基本满足预定的容量调节要求，并可明显提高装置的季节能效比。 【英文摘要】 Presents a physical model of capacity control of heat pump/air conditioning units and establishes a test set with a distillation circuit for separating the constituents in the mixture refrigerant and varying their concentration inside the circuit to adjust the system capacity with load changes. The testing results show that the system is effective in controlling refrigerant constituents and capacity and enables a significant increase in the seasonal energy efficiency ratio.