太阳能热电联供系统工程技术开发与性能分析

发布时间：2018-03-16 20:35

本文选题：太阳能热电联供　切入点：PVT组件　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：我国建筑能耗在社会总能耗中所占的比例约为30%,合理充分地开发利用太阳能,降低建筑能耗、减小环境污染,已成为建筑节能和新能源利用领域一个产业发展重点和研究热点。太阳能热电联供(PVT)技术是太阳能光热、光电资源同时同步深度开发利用的新途径,对显著提高太阳能的综合利用效率,促进我国节能减排事业的发展具有广阔的市场应用前景和推广价值。为了在我国北方地区开展太阳能热电联供技术的工程应用,研究其系统形式、开发关键工程技术、分析其推广应用的经济性十分必要。本研究以大连理工大学中央空调智能控制综合实验室为热电供应对象,首先根据该实验室常规用电负荷和冬季供暖热负荷设计要求,在分析国内外现有太阳能热电联供系统形式的基础上,设计了发电容量7.56kW的太阳能热电联供系统。其次,设计开发和加工制作了36组新型PVT热电联产组件,并进行了性能检测；建设了7.56kW太阳能热电联供系统示范性工程；完成了该工程的热电性能监测系统的建设和系统运行调试。第三,完成了该系统2015年供暖季和过渡季热电联供特性试验,并根据系统运行数据,详细分析了该系统的运行特性,最后,根据太阳能光热试验数据和光电理论计算结果,完成了该示范工程的技术经济性分析和投资回收期分析,为该技术的推广应用提供了技术参考。结果表明,本研究建设的太阳能热电联供系统示范工程,在供暖季晴天条件下,平均一天可累积获得288MJ(相当于9.8kgce)的热量和30kWh的电量；平均发电总功率为6kW,平均集热效率为23%,光电转换综合效率为15%。在过渡季晴天条件下,平均一天累积总制热量为320MJ(相当于10.9kgce),总发电量为31kWh；平均发电总功率为6.2kW,平均集热效率为28%,光电转换综合效率为15%。经过技术经济性分析,该示范工程总固定成本为11.82万元,系统运行费用为2336元/年,结合太阳能光伏发电补贴政策,以及供暖收费标准和热能向标准煤的折算,本工程的年收益为1.28万元,动态投资回收期为11.32年,每年的总节能量为3.45吨标准煤。
[Abstract]:The proportion of building energy consumption in the total social energy consumption in China is about 30%. The reasonable and full utilization of solar energy can reduce building energy consumption and reduce environmental pollution. It has become an industrial development focus and research hotspot in the field of building energy conservation and new energy utilization. In order to improve the comprehensive utilization efficiency of solar energy and promote the development of energy saving and emission reduction in China, it has broad market application prospect and popularizing value. It is necessary to study its system form, develop key engineering technology and analyze the economy of its popularization and application. Firstly, according to the design requirements of conventional electric load and winter heating load in the laboratory, and based on the analysis of the existing solar energy and heat supply system at home and abroad, a solar energy heat combined power supply system with a generating capacity of 7.56 kW is designed. In this paper, 36 new PVT cogeneration modules are designed, developed and processed, and their performance is tested, and a demonstration project of 7.56kW solar thermal power supply system is built. The construction and commissioning of the thermoelectric performance monitoring system of the project are completed. Thirdly, the cogeneration characteristics of the system in the heating season and transition season of the system in 2015 are tested, and the operating characteristics of the system are analyzed in detail according to the running data of the system. Finally, according to the solar photothermal test data and the photoelectricity theory calculation results, the technical economy analysis and the investment recovery period analysis of the demonstration project are completed, which provides a technical reference for the popularization and application of the technology. The demonstration project of solar energy and heat supply system in this study can accumulate 288MJ (equivalent to 9.8kgcec) heat and 30kWh electricity per day under the condition of sunny heating season. The average total power is 6 kW, the average heat collection efficiency is 23 and the photoelectric conversion efficiency is 15. The average daily accumulative total heating capacity is 320MJ (equivalent to 10.9kgceg / h, total generating capacity is 31kWhs), the average generating power is 6.2kW, the average heat collection efficiency is 28and the integrated photoelectric conversion efficiency is 150.The total fixed cost of the demonstration project is 118,200 yuan through technical and economic analysis. The operating cost of the system is 2336 yuan per year. Combined with the subsidy policy of solar photovoltaic power generation and the conversion of heating fees and heat energy to standard coal, the annual income of the project is 12,800 yuan, and the dynamic investment recovery period is 11.32 years. The total energy saving per year is 3.45 tons of standard coal.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU18

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