【作者】 王鹏；

【导师】 赵斌； 李强；

【作者基本信息】 长沙理工大学 ， 工程硕士（专业学位）， 2023， 硕士

【摘要】 寒冷地区农村现有建筑供热能耗高,传统燃煤等供热方式污染严重,采用单一清洁能源的供热改造受制于自然条件无法满足相应的供热需求。论文基于寒冷地区太阳能资源分布和农村供热现状,利用寒冷地区丰富的太阳能资源,因地制宜地结合不同形式辅助热源集成太阳能供热系统,有效解决寒冷地区农村的清洁供热问题,对寒冷地区农宅供热系统的研究和开发具有重要意义。首先,以寒冷地区的河北省秦皇岛、邢台的农宅供热系统为例,对太阳能供热系统和寒冷地区农村户用供热的需求进行分析,采用理论计算与数值模拟相结合的方法对农宅的热负荷进行模拟,在此基础上对太阳能供热系统进行集成与设备选型,利用TRNSYS软件搭建太阳能集成供热系统的仿真模型。其次,基于秦皇岛与邢台的工程案例,以系统辅助热源能耗为指标验证了仿真模型的可靠性,并基于提出的系统仿真模型,分析了太阳能耦合生物质供热系统和太阳能耦合天然气供热系统的运行模式。最后,探究了集热器安装倾角、集热面积、储热水箱容积三个关键参数对不同辅助热源太阳能集成供热系统性能的影响,并进行了效益分析。结果表明:秦皇岛与邢台供暖季最佳安装倾角分别为60°与53°,秦皇岛工程案例需要更低成本的辅助热源形式,以20 m~2集热器、0.8 m~3储热水箱集成太阳能耦合生物质供热系统具有更好效益;邢台工程案例选择间歇供暖在经济上优势更大,以35m~2集热器、1.75 m~3储热水箱集成太阳能耦合天然气供热系统具有更好效益。论文基于对寒冷地区秦皇岛与邢台的不同辅助热源太阳能集成供热系统的运行分析与模拟研究,揭示了供热系统关键参数对不同辅助热源太阳能集成供热系统的影响规律,研究结果可为太阳能集成供热系统在不同地区的示范与推广应用提供技术支撑。更多还原

【Abstract】 Rural buildings in cold regions consume a high amount of energy for heating,and traditional heating methods such as coal combustion result in severe pollution.However,the adoption of a single clean energy source for heating is limited by natural conditions,which cannot meet the corresponding heating demands.This paper analyzes the distribution of solar energy resources in cold regions and the current situation of rural heating,and proposes a solution to the clean heating problem in rural areas by integrating solar energy with different forms of auxiliary heat sources based on local conditions and has important significance for the research and development of rural house heating systems in cold regions.The study focuses on the heating systems of rural residences in Qinhuangdao and Xingtai,Hebei Province,in cold regions.First,by analyzing the solar heating system and the heating demands of rural households,the heat load of rural buildings is simulated using a combination of theoretical calculations and numerical simulations.Then,the solar heating system is designed and integrated by selecting suitable equipment and using TRNSYS software to build a simulation model of the solar integrated heating system.Secondly,based on the engineering cases in Qinhuangdao and Xingtai,the reliability of the simulation model is verified by using the energy consumption of auxiliary heat sources as the indicator.Using the proposed simulation model,the operation modes of solar-biomass coupled heating systems and solarnatural gas coupled heating systems are analyzed.Finally,the study explores the influence of three key parameters:collector installation tilt angle,collector area,and heat storage tank volume,on the performance of solar integrated heating systems with different auxiliary heat sources,and conducts a cost-benefit analysis.The results show that the optimal installation tilt angles for the heating season in Qinhuangdao and Xingtai are 60° and 53°,respectively.The Qinhuangdao case requires a lower-cost auxiliary heat source,and a solar-biomass coupled heating system with a 20 m~2 collector and 0.8 m~3 heat storage tank has better benefits.The Xingtai case has a greater economic advantage in intermittent heating,and a solar-natural gas coupled heating system with a 35 m~2 collector and 1.75 m~3 heat storage tank has better benefits.The research in this paper is based on the operational analysis and simulation study of solar-integrated heating systems with different auxiliary heat sources in Qinhuangdao and Xingtai,two cold regions in China.The study reveals the influence of key parameters on the performance of solar-integrated heating systems with different auxiliary heat sources,providing technical support for the demonstration and promotion of solar-integrated heating systems in diverse regions.更多还原