分布式光伏光热建筑一体化系统应用研究

发布时间：2018-03-30 23:16

本文选题：太阳能　切入点：光谱　出处：《华北电力大学》2015年硕士论文

【摘要】：太阳能建筑一体化系统可有效降低建筑能耗,现阶段,世界各国逐步开始重视太阳能建筑一体化利用技术的开发与应用。在我国,目前太阳能建筑光伏或光热利用较为常见,但对于太阳能制冷、供暖及供生活热水方面还仍处于研究示范阶段。为进一步探索光伏光热热电联供系统在建筑中的应用,提高系统在建筑结合过程中的性能表现,本文以太阳能高效电热转化利用技术为基础,对前期所设计聚光式光伏光热(CPC-PV/T)系统开展热电转化性能研究,进一步提出与系统相匹配的光伏光热建筑一体化利用设计方案,并依此展开分析研究。主要内容包括以下三点：1)从太阳源头出发,将经过CPC耦合PV/T系统的太阳能流传输过程分为大气层外太阳能流源环节、大气层环节、跟踪环节、聚光环节、分频环节和PV/T环节,在此基础上建立了CPC耦合PV/T系统光电性能数学模型,进一步对系统是否采取分频环节开展对比计算分析研究。研究表明,在相同条件下采用分频环节可降低电池温升,但是,在低倍聚光的前提条件下,引入分频环节将降低系统的光电效率,可通过提高玻璃光学透过率来解决该问题。2)采用流体仿真软件Fluent对CPC-PV/T系统电热转化效率影响因素开展研究,对比分析了在不同环境风速、环境温度、光照强度及水工质流速情况下系统光电光热转化效率变化趋势。分析得出系统总效率受辐照强度的影响不大,但随冷却流体流速及当地环境条件影响较大,后期需在PV/T模块的四周及背侧做好保温措施。3)在前期研究基础上,提出了聚光式光伏光热建筑一体化(CPC-BIPV/T)利用方案,通过对光伏利用方案、光热制冷、供暖、供生活热水方案及系统测控系统方案进行介绍及开展可行性研究,为CPC-PV/T系统与建筑结合产业化发展提供了技术支撑,指出了系统未来研究方向。
[Abstract]:Solar energy building integration system can effectively reduce building energy consumption. At present, many countries in the world begin to pay attention to the development and application of solar energy building integrated utilization technology. In our country, solar energy building photovoltaic or photothermal utilization is more common at present. However, solar refrigeration, heating and hot water supply are still in the research and demonstration stage. In order to further explore the application of photovoltaic photothermal and thermal power supply system in the building, improve the performance of the system in the process of building combination, Based on the solar energy efficient electrothermal conversion technology, this paper studies the thermoelectric conversion performance of the concentrated photovoltaic photothermal photovoltaic (CPC-PV-PV-T) system designed in the previous period, and further puts forward a design scheme for the integrated utilization of photovoltaic photothermal buildings, which is compatible with the system. The main contents include the following three points: 1) from the source of the sun, the transmission process of solar energy flow through CPC coupled PV/T system is divided into extratropical solar energy flow sources, atmosphere links, tracking links, and light gathering links. On the basis of frequency division link and PV/T link, the mathematical model of optoelectronic performance of CPC coupled PV/T system is established, and the comparative calculation and analysis of whether frequency division link is adopted in the system are carried out. Under the same condition, the temperature rise of the battery can be reduced by using the frequency division link. However, the introduction of the frequency division link will reduce the optoelectronic efficiency of the system under the premise of low power concentration. This problem can be solved by improving the optical transmittance of glass. (2) using fluid simulation software Fluent to study the factors affecting the efficiency of electrothermal conversion of CPC-PV/T system, and comparing and analyzing the factors affecting the efficiency of electrothermal conversion in different environments, such as wind speed and ambient temperature. The results show that the total efficiency of the system is not affected by the radiation intensity, but with the flow rate of cooling fluid and the local environment, the effect of the total efficiency of the system on the photothermal conversion efficiency of the system is greater than that of the cooling fluid flow rate and the local environmental conditions. On the basis of the previous research, this paper puts forward the integrated CPC-BIPV / T) utilization scheme of the concentrated photovoltaic photovoltaic photothermal building, through the photovoltaic utilization scheme, photothermal refrigeration, heating, and so on, at the end of this period, we need to do a good job of heat preservation measures around and on the back side of the PV/T module. The scheme of domestic hot water supply and the scheme of system measurement and control system are introduced and feasibility study is carried out, which provides technical support for the industrialization of CPC-PV/T system and architecture, and points out the research direction of the system in the future.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU18;TK519

【参考文献】