摘要
以太阳能、环路热管与热泵技术为基础,研究一种新型太阳能光伏-环路热管/热泵热水(PV-LHP/HPWH)系统用以制取生活热水。通过数学建模模拟和室外实验验证相结合的方法,分析3种运行模式下系统典型工况及长期运行性能,并对主要结构及运行参数的影响进行分析。分析结果显示,系统的太阳能光热利用效率与传统PV/T热水系统可比,年均太阳能供热百分比为50.9%,日均供电比例为13.7%。与传统电加热方式相比,该系统节能率达71.3%。
This paper presents a novel solar photovoltaic-loop heat pipe/heat pump water heating(PV-LHP/HPWH)system.With the combination of solar energy,loop heat pipe(LHP)and heat pump technology,the integrated system can operate in the PV-LHP mode,the solar/air source heat pump(SASHP)mode and the air source heat pump(ASHP)mode based on different weather conditions.This system will operate in the PV-LHP mode when solar irradiation is higher than 300W/m^2.The SASHP mode will be started if solar irradiation cannot support the PV-LHP mode.When there is no solar radiation,the system will run in the ASHP mode.The mathematical model of the system is constructed to simulate its operating performance in typical working conditions and in long-term operation.The influences of main structure and operating parameters are also analyzed.The outdoor test rig of the PV-LHP mode was built to verify the accuracy of the mathematical model.Investigation results show that the solar thermal efficiency of the system is comparable with that of the conventional photovoltaic/thermal(PV/T)water heating system.The annual solar heating fraction is 50.9%,and the daily average solar power supply fraction is about 13.7%.Compared with the traditional electrical water heating system,around 71.3%electricity consumption can be saved by the integrated system.
作者
李洪
孙跃
付新书
Li Hong;Sun Yue;Fu Xinshu(School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao 066004,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第4期59-66,共8页
Acta Energiae Solaris Sinica
基金
河北省自然科学基金青年基金(E2015203166)
燕山大学青年教师自主研究计划课题理工A类项目(15LGA010)。
关键词
太阳能
热管
热泵
模拟
实验热水系统
solar energy
heat pipe
heat pump
simulation
experiment
water heating system
