深圳市绿色建筑太阳能利用案例分析

以深圳市某居住建筑为例,介绍绿色建筑中太阳能热水系统设计方案。该设计方案充分利用当地太阳能资源作为热源,以空气源热泵作为辅助热源,加热水后供建筑区域内居民使用。通过与电加热系统进行比较得出,太阳能空气源热泵加热系统节约费用,静态回收期合理。     

一种利用太阳能的激光供能方法

设计了一种太阳能光伏发电-激光供能系统,讨论了系统中能量转换效率和供能损耗问题。实验采用人工太阳模拟发射器,通过光伏发电给半导体激光器提供能量发射红外激光,采用透镜准直后照射到光电池上转换成电能。测量了各装置的输入输出功率,计算了能量转换装置的转换效率和传输过程中的能量损耗,提出了改进系统的有效途径。     

基于建筑能耗模拟的分布式供能系统负荷需求预测

针对依托大型建筑用户建设的分布式供能系统,利用建筑能耗模拟计算得到的逐时负荷数据,初步拟定分布式供能系统的三类负荷曲线,并在负荷需求分析的基础上拟定出合理的装机容量,确保分布式供能系统的利用率,以获得较好的运行收益.     

工业建筑应用燃气轮机供能方案分析

根据某典型工业建筑的用能需求,制定传统供能方案和燃气轮机供能方案。从工程初投资、能耗及运行费用3个方面对方案进行比对分析,提出技术可行、经济合理的典型工业建筑供能方案。     

分布式供能系统的经济分析

分布式能源系统包括风能，太阳能，燃料电池，小／微型涡轮机等等。本文特指由天然气驱动的小／微型燃气轮机热（冷）电联产系统。     

太阳能在建筑中应用概述

在讨论太阳能在建筑中应用的问题之前，有必要先了解一些有关建筑能耗的知识。     

Solar drying system for energy conservation

A low cost portable farm solar dryer was evaluated for drying goose berry candy in the conditions of Vidarbha region of Maharashtra state. Temperature profile at top, middle and bottom in its seven trays loaded with candy was studied with respect to ambient temperature during the course of drying and maximum solar radiation of 1120 W/m² was observed at 11.30 to 12 h. The solar radiation was varied from 720–500 W/m² at 9.00 h to 16.00 h. The minimum temperature of 27°C was observed at bottom tray of the dryer and maximum of 44°C in top tray at 9.00 h. The maximum temperature of 70°C was attained at 11.30 h. The conventional drying method took 8 days to dry the product. The moisture content was reduced from 36.38 to 8.33 per cent (wb) in three days in solar drying method. The product recovery was 71.55 per cent as compare to 35 per cent in conventional drying method. The drying period was reduced by 62 per cent and product recovery was doubled using portable farm solar dryer. The goose berry candy was also dried with and without shade drying methods. The temperature variation of dryer without shade was found, in the range of 23–36°C, 31–48°C and 38–55°C in bottom, middle and top trays respectively of dryer. The weight loss of 810, 870 and 820 g were observed in three days at bottom, middle and top trays of the dryer respectively. The thermal efficiency of the dryer onepy first day drying was found 15.55 and 15.23 per cent in shade and without shade drying methods respectively. Appearance, taste and flavour of goose berry candy dried in farm solar dryer with shade were superior to conventional drying. The cost of final product was Rs 114/kg. The profit from a single unit of farm solar dryer per year was Rs 57588/-.     

Solar hydrogen energy system for Libya

A model for a solar-hydrogen energy system for Libya has been developed by obtaining relationships for and between the main energy and energy related parameters. The magnitude and trends of the parameters, with and without hydrogen introduction, have been investigated over a period of time. The results indicate that the fossil fuel resources in Libya could be exhausted within three to four decades. They also indicate that adopting the solar-hydrogen energy system would extend the availability of fossil fuel resources, reduce pollution, and establish a permanent energy system for Libya. They show that Libya could become an exporter of hydrogen in lieu of oil and natural gas.     

太阳能气象数据库查询系统

太阳能气象参数主要包括日照辐射量、温度、风速、相对湿度、大气压力以及降雨量等信息。作为最原始、最基本的设计数据之一，太阳气象参数资料在太阳能光热和光电利用系统中具有十分重要的理论与实践意义。特别是随着太阳能与建筑一体化理念的提出与应用，为太阳能系统应用软件的研     

太阳能辐射采暖系统及其设计

地板辐射采暖方式已在我国广泛地应用。由于这种采暖方式要求水温不高，利用太阳能集热系统作为采暖热源是比较理想的。介绍了太阳能集热与热泵技术结合的采暖及其设计步骤、计算方法等。     

营口地区太阳能集中供热水的系统设计

针对辽宁营口地区使用太阳能集中供热水系统进行系统形式的设计,对集中供应热水系统的能耗、太阳能集热板的面积进行计算,并将集中供应热水系统与分散供应热水系统的能耗进行对比,研究证明:太阳能集中供热水系统是一种低能耗、易推广的热水供应系统。     

与建筑完美结合的建材型太阳能系统

我国建筑能耗在27％以上,降低建筑对传统能源的消耗日益紧迫；以保温技术为主的节能技术经过三步阶段后,投入产出比增加；引入以太阳能为主的可再生能源的新型清洁供能体系势在必行；太阳能利用技术体系应作为新型建筑材料,完美实现与建筑的一体化设计。国内外进展太阳墙     

太阳能光伏制氢储能——燃料电池发电系统

20年来,我国太阳能光伏发电技术的开发利用取得了巨大成绩。特别是通过“七五”、“八五”科技攻关项目的实施,太阳能光伏发电的技术水平与实用化程度有了显著提高,其应用范围和规模不断扩大。光伏发电在解决边远地区人民生活用电和某些生产用电方面起到了重要作用,取得了良好的经济效益和显著的社会效益。随着经济的发展和人民生活水平的不断提高,边远地区居民对电视机、洗衣机、电冰箱等家用电器的购买欲望日益强烈,同时对供电质量,供电的保证率也提出了新的要求。我国现有的太阳能光伏发电系统基本上是独立方式运行,系统供电受季…     

Solar energy conversion and storage using naphthol green B dye photosensitizer in photogalvanic cells

Photogalvanic cells are electrochemical devices capable of solar power generation and storage using solution of photosensitizer(s) and reductant(s) in alkali medium. These cells are cheap, renewable, and promising energy devices for the future, provided there electrical performance is further improved. The present study of photogalvanics of Naphthol Green B dye photosensitizer with Fructose as reductant and Sodium Lauryl Suphate as surfactant in alkaline medium was undertaken with aim of finding relatively better combination of chemicals like photosensitizer, reductant and surfactant for further improvement in electrical performance of these cells. This combination of chemicals has shown very impressive and surprisingly very high improvement in cell performance. The optimum conditions for cell have also been observed for optimal cell performance. The maximum power, short-circuit current, open-circuit potential, efficiency and storage capacity (as half change time) has been observed of the order of 422.4 μW, 1850 μA, 1040 mV, ～10.6%, and 260 min, respectively.     

Solar energy recorder

A serious obstacle to the large-scale terrestrial application of solar energy in today's “energy crisis” lies in the scarcity of reliable data on the amount of solar energy at candidate converter sites. This paper describes a system designed to monitor and record, automatically, the values of the direct and total (sun and sky) solar radiation which would be seen by either tracking or fixed-type solar converters. A further pressing need addressed by the system is the means for efficiency testing and evaluation of solar cells, solar collectors and solar concentrator systems, under outdoor exposure to natural sunlight and weather conditions for extended periods. The design was accomplished in support of the Marshall Space Flight Center, NASA, where design concepts and materials for large-scale terrestrial solar energy converters are currently being evaluated.The design and study results on which this paper is based have led to the conclusion that such a system is entirely practical using existing components, with the exception of material test modules of special design. Moreover, the described system satisfies the urgent need for solar energy data and provides the “available energy” and “usable energy” answers needed to bring the large scale terrestrial application of solar energy to fruition in this country.