Research on Solar Water Heating System and Architectural Integration Design—A Case Study of Anqing Children Welfare Home

Taking the planning and major architectural design projects of Anqing Children Welfare Home for example,through the research on categories and each component of solar water heating system,the paper discussed strategies and methods to realize solar energy and architectural integration design in the climate condition and location environment of Anhui Province.

Thermal performance of integration of solar collectors and building envelopes

The integration of building with solar collector was studied. The theoretical model of integration of building envelopes and flat plate solar collectors was set up and the thermal performance of integration was studied in winter and summer,and compared to envelopes without solar collectors. The results show that the solar collection efficiency is raised in the integration of building envelopes and solar collectors with the air layer doors closed. This is true whether in winter or summer. The increment is higher as the inlet water temperature increases or the ambient temperature is low. In winter,the heat loss is significantly reduced through integration of the building envelopes and solar collectors with the closed air layer doors. The integration with the open air layer door is worse than that without collectors. In summer,the heat gains of the integration of envelopes and solar collectors are more obviously reduced than envelopes without collectors,the integration with the open air layer door is a little better than the closed one,but the difference is very small.

Solar Hot System and Design of Buildings

Domestic solar hot water system, the use of the status quo and existing problems, by analyzing the solar water heating equipment and building integrated and building integrated design.

Potential application of a novel building-integrated solar facade water heating system in a subtropical climate:A case study for school canteen

The design and potential application analysis of the novel solar-absorbing integrated facade module and its corresponding building-integrated solar facade water heating system are presented in this study.Compared with the conventional building envelope,the main novities of the proposed facade module lie in its contributions towards the supplied water preheating to loads and the internal heat gain reduction.Besides,the proposed building-integrated solar facade water heating system broadens the combination modes of the solar thermal system and the building envelope.A dynamic model is introduced first for system design and performance prediction.To evaluate the energy-saving potential and feasibility of the implementation of the proposed facade module,this paper carried out a suitable case study by replacing the conventional facade module in the ongoing retrofitting project of a kitchen,part of the canteen of a graduate school.The detailed thermal performances of three system design options are compared in the typical winter and summer weeks and throughout the year,and then,with the preferred system design,the economic,energy,and environmental effects of the proposed system are evaluated.It was found that the system with a high flow rate of the circulating water is suggested.The annual electricity saved reaches 4175.3 kWh with yearly average thermal efficiency at 46.9%,and its corresponding cost payback time,energy payback time,and greenhouse gas payback time are 3.8,1.7,1.7 years,respectively.This study confirms the feasibility and long-term benefits of the proposed building-integrated solar facade water heating system in buildings.

建筑领域太阳能利用系统的性能、挑战及优化策略综述

建筑领域的太阳能利用技术包括太阳能热水系统、太阳能制冷与空调系统、太阳能热泵系统以及建筑一体化光伏/热系统(BIPV/T)。系统效率和储热是制约太阳能热水系统发展的关键因素,目前的研究主要侧重于优化系统效率,未来应进一步关注储热技术的进步,以解决太阳能热水系统热水供应稳定性的问题。太阳能制冷与空调系统重点关注降低太阳能集热系统成本、提高集热器性能并研发小型太阳能制冷设备。太阳能热泵技术具有高能源利用率和低环境污染的特点,目前在实际应用中面临的技术障碍包括系统集成与优化、高效太阳能收集器、热泵性能提升、季节性储能、可靠性与稳定性以及经济性与可扩展性等,其中系统集成与优化尤为关键。太阳能光伏光热综合应用是建筑节能领域的一个重要研究方向,太阳能聚光光伏/光热系统(CPV/T)是解决BIPV/T系统中太阳能利用率低下问题的有效策略。BIPV/T和CPV/T系统还需要深入探讨集热器优化设计、材料选择、气候适应性及可持续性等问题。总之,未来建筑领域太阳能系统利用的主要研究方向为提高系统性能、开发新型材料以及集成优化。此外,应用物联网、大数据和人工智能技术可以促进太阳能系统的智能化监测、控制和维护。

太阳能建筑的研究进展综述

对被动式太阳能建筑和主动式太阳能建筑的应用现状和研究进展进行阐述,并对主动式太阳能建筑中可与建筑相结合的太阳能热利用技术和可与建筑相结合的光伏发电技术进行分析。结果表明:1)被动式太阳能建筑技术研究方法逐渐由定性分析为主转向定性、定量和综合分析,并以节能低碳、室内热舒适度、设计优化及相变材料的应用作为研究重点。2)系统的性能系数和太阳能保证率是建筑太阳能热利用技术的研究重点,设备选型、系统设计、运行策略是主要研究内容;阴、雨、雪天等太阳能无法利用的工况多采用太阳能辅助热泵供暖系统。3)增强光伏组件通风性可使光伏组件降温,提升光伏建筑一体化(BIPV)建筑的光伏发电量;回收利用光伏发电伴生热量有助于提升能源综合利用率。

太阳能热水系统在建筑给排水设计中的应用

太阳能热水系统是一种利用太阳能热量为建筑物供应热水的环保节能技术。本文将详细介绍太阳能热水系统的原理和组成部分,并探讨其在建筑给排水系统设计中的应用。同时,还将分析太阳能热水系统在节能减排、经济性和可持续发展方面的优势,以及在实际工程中的应用案例。最后,本文将提出进一步发展和应用太阳能热水系统的建议,以期提供参考。

A numerical and experimental study of a dual-function solar collector integrated with building in passive space heating mode

A newly designed solar collector named dual-function solar collector is proposed.The dual-function solar collector integrated with building can perform in two different modes:working as a passive space heating collector in cold sunny days such as in winter,or working as a facade water heating collector in hot days such as in summer.An experimental study has been carried out to investigate the performance of the novel system in space heating mode,whilst,the dynamic numerical model has been established and validated.The experimental and numerical results show that during the period of the measurement from 9:00 to 17:00,the mean indoor temperature was up to 24.7°C while the mean ambient temperature was only 4.8°C,and a temperature stratification was present in the room.Moreover,a numerical study on the effect of optical property of coatings has been carried out.

小型木结构建筑太阳能相变蓄热装置性能实验研究

以太阳能较为丰富地区的小型木结构建筑为研究对象,结合其处于极端气候下的最不利工况,设计了一种可充分利用可再生能源、占地面积小、储热密度大、蓄放热性能良好的多功能相变蓄热换热装置,并搭建了实验台对影响相变蓄热装置性能的因素进行探究。结果表明,该装置可综合建筑供暖与生活热水的负荷性能特征需求,兼顾在极端气候条件和非极端气候条件下的功能发挥,能有效协调小型木结构太阳能建筑能源供需矛盾。

Effect of a dual-function solar collector integrated with building on the cooling load of building in summer

As a building integrated solar thermal system,the dual-function solar collector integrated with building works for passive space heating in cold winter season,and for water heating in warm seasons.In this paper,the study is made on the dual-function solar collector integrated with building when it works in water heating mode with natural circulation.The coupled model of the collector and building's environment is established and validated.A numerical simulation is achieved to show the thermal effect of the novel system on the building in summer.By comparing with the cooling loads of the rooms with or without the novel collector in summer,the results show that when in summer,the novel solar system is available for serving hot water,and it does not have the summer overheating problem,and can even improve the thermal environment of its building slightly.

燃煤电站与太阳能集成系统的研究现状

回顾了近年来太阳能利用与燃煤机组集成的研究,对于太阳能与燃煤机组集成的研究主要集中在利用太阳能辅助燃煤机组汽水加热系统、利用太阳能辅助燃煤机组碳捕集系统和利用太阳能储热补偿燃煤机组3个方面,总结了太阳能与燃煤机组在集成方案和系统运行过程方面的研究进展,在保证燃煤发电机组高效能量转换的基础上进一步减少了污染物排放。

集热器构件化——太阳能与建筑一体化设计的必由之路

针对目前市场上太阳能系统在建筑上的不和谐安装造成建筑“毁容”,以致城市面貌的损坏,提出太阳能要与建筑融合必须走太阳能装置构件化的理念。希望通过太阳能企业与建筑界携手创造,使太阳能系统的利用在建筑上有和谐的崭新的面貌出现。文章突出建筑与太阳能的融合理念,分析太阳能装置建筑构件化、装配式安装设计的优秀实例并以为借鉴,做相应的集热器建筑构件化设计方案进行初步尝试,对太阳能与建筑一体化设计所涉及的问题以及解决的办法做初步探讨。

一种新型的与建筑一体化太阳能双效集热器系统的实验研究

提出了一种新型的与建筑一体化太阳能双效集热器系统,该系统有两种工作模式:被动采暖工作模式和集热水工作模式。由系统工作在被动采暖工作模式下的实验结果可以得到:系统房间内空气存在温度分层现象,测试期间上下位置最大温差为4.2℃,平均温差约为2.7℃;系统在被动采暖工作模式下工作时对房间温度的提高作用明显,实验测试结果显示,实验期间系统房间平均温度达到24.7℃,相对环境温度升高平均达到19.9℃。通过系统以自然循环方式工作在集热水工作模式下的实验测试结果,可以得到实验期间在集热水工作模式下系统的热效率为52.8%,集热器单位面积太阳得热为4.16MJ/m^2。

黑瓷复合陶瓷太阳板集热系统的应用研究

研发了一种与建筑一体化的新型高效平板太阳能集热体黑瓷复合陶瓷太阳板。该集热体以普通瓷土为原料配制泥浆注浆成型,表面喷涂以工业废弃物提钒尾渣为原料调配的钒钛黑瓷泥浆层,干燥后经连续辊道窑1 200℃烧制而成,阳光吸收比为0.95。介绍了陶瓷太阳板房顶集热系统的构建方法,该系统与建筑共用结构层、保温层、防水层,与建筑一体化、同寿命,隔热、保温效果优于普通房顶。通过建筑实例对该集热系统的集热效率与真空玻璃管热水器进行测试对比,得出集热系统日得热量为8.6 MJ/m2,远高于真空玻璃管热水器和国家标准的7.0 MJ/m2,可实现太阳能使用成本低于常规能源。

云南太阳能热水器建筑一体化研究概况

介绍了我国太阳能热水器建筑一体化发展的背景及历史沿革,论述了云南在太阳能建筑一体化方面的研究现状,并分析了太阳能热水器建筑一体化的发展动向及市场前景。

太阳能空气集热建筑模块冬季热性能优化实验研究

以建筑集成的太阳能空气集热建筑模块为研究对象,利用与实际住宅等大的实验平台,针对不同的集热板形式和空气流动方式对集热建筑模块热性能的影响进行了实验研究。重点讨论了开孔平板型、开孔孔径大小以及设置空气间层分隔板等对改善集热建筑模块热性能的影响。实验结果表明,开孔平板型较实心平板型的热性能得到明显的改善,孔径优化后(孔径为5mm、孔间距为15mm)的热效率可提高30%以上;另外,设置空气间层分隔板相对于小孔径(d=5mm)而言,采用大孔径(d=10mm)时出风口升温效果更明显。

太阳能空气集热建筑模块的运行控制策略

该研究利用可调控的风机和风门,对两种类型集热模块的热输送过程进行了优化实验研究,系统探讨了在供热模式下空气循环方式、模块类型以及质量流率等因素对模块内部空气升温速度、供热量及集热效率等的影响,并提出集热模块运行控制的基本策略。同时通过对模块的简化计算模型进行理论分析,提出了集热模块的运行控制参数方程,为实现模块运行的优化控制提供理论依据。

计及光热电站及建筑热平衡的冷热电综合能源系统优化运行

多能联供综合能源系统有利于推动能源转型、实现多能源协调互补,已成为能源互联网的重要发展方向。针对以可再生能源为主体的冷热电联供问题,引入热电联产型光热(concentrated solar power,CSP)电站作为核心供能单元,并结合电加热器、吸收式制冷机、地热源热泵等能量转换设备组成综合能源系统(integrated energy system,IES),提出一种冷热电联供型IES运行优化方法。首先构建了IES架构,并建立了光热电站与建筑物热平衡模型。然后,引入居民舒适度惩罚项,建立了考虑运行成本的IES经济优化模型。在此基础上,建立计及多重不确定性的IES模糊机会约束规划模型。最后,通过算例仿真验证所提策略可以满足居民的不同舒适性需求与提高光热电站的供能潜力,降低系统的运行成本。

一体化太阳能热泵热水器实验研究

提出一种新型的集热/蓄能/蒸发一体化太阳能热泵热水器系统,并分析该系统的工作原理,搭建此系统的实验测试装置。在实验测试的基础上,定义一体化太阳能热泵热水器系统的得热效率并与直膨式太阳能热泵系统进行比较;分析系统不同工况下的性能系数。实验研究表明:集热/蓄能/蒸发一体化太阳能热泵热水器系统集热/蓄能/蒸发器的得热效率高于直膨式太阳能热泵热水器的得热效率;集热/蓄能/蒸发一体化太阳能热泵热水器系统的性能系数COP平均值为7.56。

新型的与建筑一体化太阳能双效集热器系统的模拟研究

提出了一种新型的与建筑一体化太阳能双效集热器系统,该系统有两种工作模式:在冬季的被动采暖工作模式和在其他无需供暖时期的集热水工作模式.针对该新型系统的两种工作模式分别建立了与建筑耦合传热计算模型并进行了模拟计算.模拟结果表明:在冬季被动采暖工作模式下,在外环境平均温度只有2.8℃的给定模拟条件下,系统可以使房间温度最高提高至27.4℃,系统被动采暖性能优异;在自然循环集热水工作模式下,在给定模拟条件下,系统集热效率为54.8%,太阳得热总量为4.32MJ/m2.