太阳能-生物质能-谷电蓄热联合供暖系统研究  

Research on combined heating system of solar-biomass-valleyelectricity heat storage

作　　者：崔海亭[1] 张良锐 马康乐 张欣悦 CUI Haiting;ZHANG Liangrui;MA Kangle;ZHANG Xinyue(School of Mechanical Engineering,Hebei University of Science and Technology,Shijiazhuang,Hebei 050018,China)

机构地区：[1]河北科技大学机械工程学院,河北石家庄050018

出　　处：《河北工业科技》2022年第6期439-448,共10页Hebei Journal of Industrial Science and Technology

基　　金：河北省自然科学基金(B2021208017);河北省重点研发计划项目(22324501D);石家庄市科技研究与发展计划项目(211230093A)。

摘　　要：为了提高多种新能源组合供暖的热效率,考察太阳能-生物质能-谷电蓄热联合供暖系统的供暖效果,利用TRNSYS软件中的TRNbuild模块对实验室进行供暖期内逐时热负荷仿真计算,以动态负荷为基础搭建太阳能与生物质锅炉联合供暖系统的TRNSYS模型,并对仿真结果进行了实验验证。研究结果表明:7种运行模式及控制策略联合互补,实现了各单元在供暖过程中不同时段的协调控制,保证了联合供暖系统的稳定运行;联合供暖系统供水温度从40℃升高至60℃,其供热效率降低了11.08%,太阳能保证率降低了23.35%;集热器面积从20 m 2增大到40 m 2时,太阳能保证率增加25.99%,供热效率降低了2.11%;集热水箱容积从1.5 m 3增大到4 m 3时,太阳能保证率增加8.67%,供热效率增加了4.31%;系统平均供热效率实验值与模拟值误差为4.29%,平均供热指标实验值与模拟值误差为6.15%;联合供暖系统测试日平均温度为19.76℃,能够达到寒冷地区冬季供暖室内温度18~24℃的采暖要求。联合供暖系统具有良好的热舒适性,研究结果可为北方地区多源互补供热系统工程优化设计提供依据。In order to improve the thermal efficiency of a variety of new energy combination heating,and investigate the heating effect of the solar-biomass-Valley electricity heat storage combined heating system,the TRNbuild module in TRNSYS software was used to simulate the hourly heat load in the laboratory during the heating period,and the TRNSYS model of the solar-biomass boiler combined heating system was built based on the dynamic load.The simulation results were verified by experiments.The results show that the seven operation modes and control strategies are combined and complementary,which realize the coordinated control of each unit in different periods of the heating process,and ensure the stable operation of the combined heating system.When the water supply temperature of the combined heating system increases from 40℃to 60℃,the heating efficiency of the combined heating system decreases by 11.08%,and the solar guarantee rate decreases by 23.35%.When the collector area increases from 20 m 2 to 40 m 2,the solar guarantee rate increases by 25.99%and the heating efficiency decreases by 2.11%.When the volume of the heat collecting water tank increases from 1.5 m 3 to 4 m 3,the solar guarantee rate increases by 8.67%,and the heating efficiency increases by 4.31%.The error between the experimental and simulated values of the average heating efficiency is 4.29%,and the error between the experimental and simulated values of the average heating index is 6.15%.The average daily temperature of the combined heating system is 19.76℃,while the indoor temperature of the heating room in cold areas in winter is 18~24℃,indicating that the combined heating system can meet the heating requirements and has good thermal comfort.The research results can provide a basis for the optimization design of multi-source complementary heating system in northern China.

关 键 词：太阳能 生物质能 相变蓄热 低谷电 TRNSYS 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]