冰源热泵与地埋管地源热泵联合供暖系统仿真  

Simulation of Combined Heating System of Ice-source Heat Pump and Buried Tube Ground-source Heat Pump

作　　者：马宏权 徐连 胡志高 胡平放[3] 朱娜[3] 雷飞[3] MA Hongquan;XU Lian;HU Zhigao;HU Pingfang;ZHU Na;LEI Fei

机构地区：[1]南京丰盛新能源股份有限公司,江苏南京210039 [2]湖北风神净化空调设备工程有限公司,湖北武汉430060 [3]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《煤气与热力》2022年第3期6-10,18,共6页Gas & Heat

摘　　要：低温水相变制热系统与水源热泵机组相结合构成冰源热泵机组,采用TRNSYS软件对冰源热泵机组与地埋管地源热泵机组联合供暖系统的运行特性及能效进行仿真。水泵耗电量:低温水相变制热系统在供暖期并非始终保持满负荷的制冰状态,不同条件下平均含冰率均小于设定的峰值含冰率。在乙二醇溶液循环温差一定的条件下,冰浆循环泵耗电量随峰值含冰率增大呈下降趋势。乙二醇溶液泵耗电量随峰值含冰率的增大而增加。随着峰值含冰率的增大,乙二醇溶液泵耗电量在低乙二醇溶液循环温差下的上升趋势明显,在高乙二醇溶液循环温差下的上升趋势变缓。热泵机组耗电量:随着峰值含冰率增大,低温水相变制热系统承担了更多热负荷,冰源热泵机组耗电量呈上升趋势。峰值含冰率一定时,随着乙二醇溶液循环温差增大,冰源热泵机组耗电量呈下降趋势。地埋管地源热泵机组耗电量对峰值含冰率、乙二醇溶液循环温差的变化不敏感。机组能效比:与地埋管地源热泵机组相比,冰源热泵机组能效比受峰值含冰率、乙二醇溶液循环温差的影响更加明显。在低峰值含冰率下,比较高的乙二醇溶液循环温差对应较高的冰源热泵机组能效。在高峰值含冰率条件下,过低的乙二醇溶液循环温差不利于冰源热泵机组能效的提高。The ice-source heat pump unit is composed of low-temperature water phase-change heating system and water-source heat pump unit.TRNSYS software is used to simulate the operation characteristics and energy efficiency of the combined heating system of ice-source heat pump unit and buried tube ground-source heat pump unit.Water pump power consumption:The low-temperature water phase-change heating system does not always maintain a full-load ice-making state during the heating period,and the average ice content under different conditions is less than the set peak ice content.Under the condition of a certain circulation temperature difference of ethylene glycol solution,the power consumption of the ice slurry circulation pump shows a downward trend with the increase of the peak ice content.The power consumption of the ethylene glycol solution pump increases with the increase of the peak ice content.With the increase of the peak ice content,the power consumption of the ethylene glycol solution pump has an obvious upward trend under the low circulation temperature difference of the ethylene glycol solution,and the upward trend becomes slower under the large circulation temperature difference of the ethylene glycol solution.Power consumption of heat pump units:As the peak ice content increases,the low-temperature water phase-change heating system bears more heat load,and the power consumption of ice-source heat pump unit shows an upward trend.When the peak ice content is constant,as the circulation temperature difference of the ethylene glycol solution increases,the power consumption of the ice-source heat pump unit shows a downward trend.The power consumption of the buried tube ground-source heat pump unit is not sensitive to changes in the peak ice content and the circulation temperature difference of the ethylene glycol solution.Energy efficiency ratio of units:Compared with buried tube ground-source heat pump unit,the energy efficiency ratio of ice-source heat pump unit is more obviously affected by the peak ice conten

关 键 词：低温水相变制热 冰源热泵 地埋管地源热泵 

分 类 号：TU995.7[建筑科学—供热、供燃气、通风及空调工程]