太阳能热泵相变蓄热供暖系统参数影响研究  

PARAMETER STUDY OF SOLAR ASSISTED HEAT PUMP HEATING SYSTEM WITH PHASE CHANGE THERMAL STORAGE

作　　者：韩宗伟[1] 王一茹[1] 阿不来提.依米提 郑茂余[3] 李卫华 

机构地区：[1]东北大学材料与冶金学院热能与环境工程研究所,沈阳110819 [2]新疆新能源研究所,乌鲁木齐830011 [3]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《太阳能学报》2015年第8期2028-2035,共8页Acta Energiae Solaris Sinica

基　　金：中央高校基本科研业务费项目(N110402016);新疆维吾尔自治区十二五科技重大专项(201130107);国家自然科学基金(51406030)

摘　　要：针对寒冷地区的气候特点及建筑负荷特点,提出利用相变蓄热的太阳能热泵系统,介绍该系统的运行原理,建立系统各部分的数学模型,针对哈尔滨地区(45.8°N,126.8°E)的气象条件,编制系统动态运行模拟程序,研究太阳集热器面积及相变蓄热水箱参数对整个系统运行性能的影响。研究结果表明,当设计热负荷为10 k W时,系统所需太阳集热器面积约为60 m2,对应相变蓄热水箱中相变材料最佳质量分数约为70%,相变材料封装尺寸减小有助于提高太阳能集热量,且该效果在供暖初期和末期更为显著。A novel solar assisted heat pump system with a phase-change thermal storage tank was presented according to climate characteristic and building load characteristic in cold area. The operation principle of the system was illustrated and the numerical models for each key component of the system were built. Based on the meteorological data of Harbin （45.8°N, 126.8°E） , simulation program with these numerical models were performed to determine the impact of the surface area of solar collector and the phase-change thermal storage capacity on the operation performance of the solar assisted heat pump system under different testing combinations. The simulation results indicate that when the designed heat load is 10 kW, the optimal surface area of solar collector is 60 ms, and the optimal mass ratio of the phase-change material in the thermal storage tank is 70%. It also suggests that the efficiency of solar collector can be increased as the package size of the phase-change material decreases. The impact will be more noticeable during the initial and ending periods of the winter heating seasons.

关 键 词：太阳能热泵 寒冷地区 数学模型 运行性能 相变材料 

分 类 号：TK512[动力工程及工程热物理—热能工程]