共查询到19条相似文献,搜索用时 140 毫秒
1.
2.
3.
建设以太阳能为核心能源的绿色建筑,对应用于外墙的建筑光伏热电集成(BIPV/T)系统的技术发展进行分析,主要分为BIPV/T-空气冷却型系统、BIPV/T-水冷却型系统和BIPV/T-热泵系统三类,重点介绍建筑外墙集成PV/T系统的设计及其对发电、围护结构的热工性能和建筑供暖和制冷的能耗的影响。应用于建筑时,该集成系统既能够输出太阳能绿色电力供应和太阳能绿色供热,又能显著提高太阳能利用效率,降低建筑的冷热负荷。 相似文献
4.
5.
中国大力推进分布式光伏发电的同时,存在许多工业厂房屋顶无法满足光伏发电系统安装条件的问题,这极大制约了光伏发电技术的推广。由于传统的光伏发电系统是直接附着在建筑物屋顶,即采用的是BAPV模式,这会导致因需增加建筑物的承载力而增加建设成本的情况出现,从而制约了分布式光伏发电的应用,而将光伏发电系统与建筑集成的光伏建筑一体化(BIPV)模式可有效解决此类问题。针对BIPV模式和BAPV模式对工业厂房钢结构的影响进行了研究,并根据实际案例对这两种模式下的光伏发电系统建设、维护成本进行了分析。研究结果表明:1)BIPV模式相较于BAPV模式可以减少工业厂房钢结构屋顶恒荷载,对于轻微超限的项目可以省去加固成本,对于超限明显的项目可以减少加固成本。2)在同等建设条件下,BIPV模式相较于BAPV模式可以减少屋顶建设成本;并且从中长期来看,相较于BAPV模式,BIPV模式平均1万m2的厂房可以减少126万建设维护成本。 相似文献
6.
7.
介绍了建筑屋顶太阳能发电系统的基本组成及分类,指出光伏建筑一体化(BIPV)是光伏技术的热点,具有许多优势。就江苏淮安屋顶光伏并网发电项目的方案、成本、经济和社会效益等方面进行分析。 相似文献
8.
9.
由于我国太阳能资源分布不均匀,太阳能资源迥异,不同区域的光伏发电系统出力差异很大,其直流/交流最佳配比也不相同。通过研究一个工程实例的不同容配比情况,计算此区域项目全寿命周期的不同度电成本,分析不同容配比下的度电成本特性,旨在助力此区域大规模光伏发电系统的优化工作。 相似文献
10.
《储能科学与技术》2013,(6)
太阳能热发电是将太阳能转化为热能,通过热功转化过程发电的技术。太阳能热发电站具有发电功率相对平稳可控、运行方式灵活、可进行热电并供等优势,同时具有非常好的环境效益。太阳能热发电规模化发展后,近期能够作为调峰电源为风力发电、光伏发电等间歇性电源提供辅助服务。随着未来技术的优化提升,由大型太阳能热发电站组成的太阳能热发电厂有可能承担电力系统基础负荷。目前,全球太阳能热发电产业正在兴起,装机容量逐年增加,然而,我国在太阳能热发电关键技术研究上明显落后于先进国家,太阳能热发电产业发展速度明显滞后;另外,我国也没有发布明确的太阳能热发电产业激励政策,这直接导致了一批项目迟迟不能落地。 相似文献
11.
Building integrated photovoltaics (BIPV) perform traditional architectural functions of walls and roofs while also generating electricity. The displacement of utility generated electricity and conventional building materials can conserve fossil fuels and have environmental benefits. A life cycle inventory model is presented that characterizes the energy and environmental performance of BIPV systems relative to the conventional grid and displaced building materials. The model is applied to an amorphous silicon PV roofing shingle in different regions across the US. The electricity production efficiency (electricity output/total primary energy input excluding insolation) for a reference BIPV system (2kWp PV shingle system with a 6% conversion efficiency and 20 year life) ranged from 3.6 in Portland OR to 5.9 in Phoenix, AZ indicating a significant return on energy investment. The reference system had the greatest air pollution prevention benefits in cities with conventional electricity generation mixes dominated by coal and natural gas, not necessarily in cities where the insolation and displaced conventional electricity were greatest. 相似文献
12.
This paper is the first of two papers that describe the modeling, design, and performance assessment based on monitored data of a building-integrated photovoltaic-thermal (BIPV/T) system thermally coupled with a ventilated concrete slab (VCS) in a prefabricated, two-storey detached, low energy solar house. This house, with a design goal of near net-zero annual energy consumption, was constructed in 2007 in Eastman, Québec, Canada - a cold climate area. Several novel solar technologies are integrated into the house and with passive solar design to reach this goal. An air-based open-loop BIPV/T system produces electricity and collects heat simultaneously. Building-integrated thermal mass is utilized both in passive and active forms. Distributed thermal mass in the direct gain area and relatively large south facing triple-glazed windows (about 9% of floor area) are employed to collect and store passive solar gains. An active thermal energy storage system (TES) stores part of the collected thermal energy from the BIPV/T system, thus reducing the energy consumption of the house ground source heat pump heating system. This paper focuses on the BIPV/T system and the integrated energy concept of the house. Monitored data indicate that the BIPV/T system has a typical efficiency of about 20% for thermal energy collection, and the annual space heating energy consumption of the house is about 5% of the national average. A thermal model of the BIPV/T system suitable for preliminary design and control of the airflow is developed and verified with monitored data. 相似文献
13.
针对当前太阳能建筑一体化应用中存在的问题,提出太阳能光伏光热建筑一体化(BIPV/T)综合利用研究的新概念、新方法和新功能,不仅能提高太阳能建筑一体化的综合利用效率、降低应用成本,且使得太阳能功能更多、全年利用率更高。该文介绍了中国科学技术大学近年来的相关研究,包括与建筑相结合的光伏/热水系统、碲化镉光伏通风窗系统、光伏/空气/热水复合被动墙体系统、光伏光热-热催化/洁净多功能复合墙体系统的原理、功能及效率,拓展了太阳能建筑一体化研究和应用的新途径,为实现太阳能建筑大规模应用以及创造健康舒适的室内环境提供新的方法。 相似文献
14.
Building-integrated photovoltaics (BIPV) is an innovative green solution that incorporated energy generation into the building façade with modification on the building material or architectural structure. It is a clean and reliable solution that conserves the aesthetical value of the architecture and has the potential to enhance the building's energy efficiency. Malaysia's tropical location has a high solar energy potential to be exploited, and BIPV is a very innovative aspect of technology to employ the available energy. Heriot-Watt University Malaysia (HWUM) has a unique roof design that could be utilized as an application of the BIPV system to generate electricity, reducing the carbon footprint of the facility. Eight BIPV systems of different PV technologies and module types and with capacities of 411.8 to 1085.6 kW were proposed for the building. The environmental plugin software has been integrated with a building geometry modelling tool to visualize and estimate the energy potential from the roof surface in a 3D modelling software. Additionally, detailed system simulations are conducted using PVSyst software, where results and performance parameters are analysed. The roof surface is shown to provide great energy potential and studied scenarios generated between 548 and 1451 MWh yearly with PR range from 78% to 85%. C-Si scenarios offer the best economical profitability with payback period of 4.4 to 6.3 years. The recommended scenario has a size of 1085.5 kW and utilizes thin-film CdTe PV modules. The system generates 1415 MWh annually with a performance ratio of 84.9%, which saves 62.8% of the electricity bill and has an estimated cost of 901 000 USD. Installation of the proposed system should preserve the aesthetical value of the building's roof, satisfy BIPV rules, and most importantly, conserves energy, making the building greener. 相似文献
15.
Practical application of building integrated photovoltaic (BIPV) system using transparent amorphous silicon thin-film PV module 总被引:1,自引:0,他引:1
An analysis has been carried out on the first practical application in Korea of the design and installation of building integrated photovoltaic (BIPV) modules on the windows covering the front side of a building by using transparent thin-film amorphous silicon solar cells. This analysis was performed through long-term monitoring of performance for 2 years. Electrical energy generation per unit power output was estimated through the 2 year monitoring of an actual BIPV system, which were 48.4 kWh/kWp/month and 580.5 kWh/kWp/year, respectively, while the measured energy generation data in this study were almost half of that reported from the existing data which were derived by general amorphous thin-film solar cell application. The reason is that the azimuth of the tested BIPV system in this study was inclined to 50° in the southwest and moreover, the self-shade caused by the projected building mass resulted in the further reduction of energy generation efficiency. From simulating influencing factors such as azimuth and shading, the measured energy generation efficiency in the tested condition can be improved up to 47% by changing the building location in terms of azimuth and shading, thus allowing better solar radiation for the PV module. Thus, from the real application of the BIPV system, the installation of a PV module associated with azimuth and shading can be said to be the essentially influencing factors on PV performance, and both factors can be useful design parameters in order to optimize a PV system for an architectural BIPV application. 相似文献
16.
与建筑相结合的光伏并网电站是未来太阳能发展的重要方向之一,现在介绍国内外光伏建筑的现状以及未来的发展趋势,并对光伏建筑一体化的设计原则,光伏与建筑相结合的具体形式进行了阐述。 相似文献
17.
18.
In January 2004, the Photovoltaic System Laboratory of the Universidad Nacional de Colombia installed the first grid-connected system in the country. A sophisticated monitoring system was implemented for measuring and analysing the performance and power quality of the building-integrated photovoltaic (BIPV) system. The meteorological and solar radiation data at the site of installation were also analysed for correlation with system performance. On the basis of 4-year monitoring results, the performance of the BIPV system was analysed from a component perspective (photovoltaic array and power conditioning unit) and global perspective (system efficiency, electrical energy, power quality, etc.). Energy analysis and economic evaluation revealed that, to get a trade-off between energy and economic viability, the BIPV system installations must be heavily subsidized. 相似文献
19.
This paper is the second of two papers that describe the modeling and design of a building-integrated photovoltaic-thermal (BIPV/T) system thermally coupled with a ventilated concrete slab (VCS) adopted in a prefabricated, two-storey detached, low energy solar house and their performance assessment based on monitored data. The VCS concept is based on an integrated thermal-structural design with active storage of solar thermal energy while serving as a structural component - the basement floor slab (∼33 m2). This paper describes the numerical modeling, design, and thermal performance assessment of the VCS. The thermal performance of the VCS during the commissioning of the unoccupied house is presented. Analysis of the monitored data shows that the VCS can store 9-12 kWh of heat from the total thermal energy collected by the BIPV/T system, on a typical clear sunny day with an outdoor temperature of about 0 °C. It can also accumulate thermal energy during a series of clear sunny days without overheating the slab surface or the living space. This research shows that coupling the VCS with the BIPV/T system is a viable method to enhance the utilization of collected solar thermal energy. A method is presented for creating a simplified three-dimensional, control volume finite difference, explicit thermal model of the VCS. The model is created and validated using monitored data. The modeling method is suitable for detailed parametric study of the thermal behavior of the VCS without excessive computational effort. 相似文献