【摘要】 对风管送风式空调(热泵)机组在标称制热工况下的变风量运行及变环境温度的制热运行进行了实验研究,得出了机组制热量、输入功率、性能系数、出风温度、排气压力、排气温度、吸气压力、吸气温度等参数随风量变化及机组制热量、性能系数、吸气压力、吸气温度随环境温度变化的关系,分析了机组制热工况下变工况运行的特点,探讨了机组在制热变工况条件下运行时,提高性能与保障运行可靠性的方法,为风管送风式空调(热泵)机组的制热变工况运行提供了有价值的参考。更多还原

【Abstract】 An experimental research is performed on ducted air-conditioning(heat pump) unit’s operation under nominal heating condition with variable air volume and heating operation with variable surrounding temperature.The relationships of heating capacity,power input,COP,outlet temperature,discharge pressure,discharge temperature,suction pressure and suction temperature vs.air volume and the relationships of heating capacity,COP,suction pressure and suction temperature vs.surrounding temperature are showed.Meanwhile,the characteristics of the unit heating operation under variable condition are analyzed.Methods of how to improve the unit performance and operating reliability under variable condition have been discussed,which provide an important reference for the unit heating operation under variable condition.更多还原