空气源热泵辅助太阳能热水系统分析与优化  

Analysis and optimization of the solar hot water heating system assisted by air source heat pump

作　　者：于涛[1] 张录陆 楚广明[1] YU Tao;ZHANG Lulu;CHU Guangming(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Urban and Rural Planning Design Institute,Jinan 250014,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]山东省城乡规划设计研究院,山东济南250014

出　　处：《山东建筑大学学报》2021年第4期27-34,共8页Journal of Shandong Jianzhu University

基　　金：山东省自然科学基金项目(ZR2019MEE083)。

摘　　要：空气源热泵辅助太阳能热水系统可实现全天候热水供应,促进可再生能源在建筑中的高效利用,进而促进能源的低碳转型。文章基于某驻济高校的空气源热泵辅助太阳能热水工程项目,收集了2019年9—12月的能效监测云平台数据,利用瞬时系统模拟TRNSYS软件建立空气源热泵辅助太阳能热水系统的仿真模型,模拟分析了系统采取不同优化策略的运行特点及节能性。结果表明:系统在9—12月份的平均单位热水能耗为11.16 kWh/t;降低辅助热源空气源热泵的启停温度能够有效地降低系统的耗电量,热泵启停温度每降低1℃,系统全年耗电量降低了7%~8%;热泵夜间运行模式下的耗电量最高,白天运行模式次之,全天运行模式耗电量最低;系统的运行能耗随水箱容积的增大而减小,系统的水量配比可取80 L/m^(2);采用双水箱系统能够提高系统的集热效率和太阳能利用率。Air source heat pump assisted solar water heating system can realize all-day hot water supply and promote the low-carbon transformation of energy.Based on the performance data of the heat pump assisted solar water heating project of a university in Jinan,the data from September to December in 2019 were collected.The system model was created by TRNSYS,the energy consumption and optimization strategy were simulated.The results show that the average energy consumption per unit of hot water from September to December is 11.16 kWh/t.Reducing the start and stop temperature of auxiliary heat source air source heat pump can effectively reduce the power consumption of the system.When the start and stop temperature of the heat pump decreases by 1℃,the annual power consumption of the system decreases by about 7%~8%.The power consumption in night operation mode is the highest,the heat pump operation mode in daytime is the second,and the power consumption in whole day operation mode is the lowest.The operation energy consumption of the system decreases with the increase of water tank volume,and the water ratio of the system is 80 L/m^(2).The use of double water tank system can improve the heat collection efficiency of the system and improve the utilization rate of solar energy.

关 键 词：太阳能热水系统 空气源热泵 能耗 模拟 

分 类 号：TK519[动力工程及工程热物理—热能工程]