太阳能在暖通空调领域中的应用

介绍了太阳能在暖通空调领域的3个主要应用,即太阳能采暖、太阳能制冷和太阳能通风;分析了太阳能采暖和太阳能制冷的优缺点;针对太阳能通风烟囱,根据其烟囱形式的不同,简要分析了影响其通风量大小的主要因素,从而可以为太阳能烟囱的设计提供一定的参考依据。     

兰州地区农宅太阳能低温辐射采暖TRNSYS模拟研究

利用TRNSYS软件,对兰州地区单层农村住宅进行太阳能低温地板辐射采暖的数值模拟。通过模拟数据分析探讨了太阳能低温地板辐射采暖在农村地区的可行性、舒适性以及兰州地区太阳辐射特点探讨了太阳能低温地板辐射采暖的优势,发挥建筑节能的特点。     

太阳能地板辐射采暖在小型住户中的应用分析

本文介绍了太阳能地板辐射采暖的基本原理,并分析了其在济南市区某小型住户在建筑中实际应用的工程实例,总结出太阳能地板辐射采暖具有良好的经济和社会效益。太阳能作为清洁环保的可再生能源,从节约常规能源和加强环境保护的长远方面上来看,把太阳能地板辐射采暖应用在小型住户建筑中具有深远的意义和广阔的发展前景。     

美国加紧研发太阳能核心技术

<正>近年,横跨新能源和节能环保两大领域的太阳能产业发展迅速,为抢占全球市场主导地位,美国通过提供资金和政策扶持,推动太阳能产业的核心技术研发,太阳能技术位居世界前列。当今太阳能技术主要涉及太阳能光伏发电、太阳能采暖与冷却、太阳能聚热发电系统、被动太阳能、太阳灶以及其他新兴技术。目前,美国太阳能科技研     

太阳能供热采暖系统的应用与设计

太阳能供热采暖是一项新的节能技术,但在实际应用中停留在简单的估算水平上。介绍了太阳能供热采暖系统组成,着重分析了集热器、蓄热水箱、辅助热源设计方法及选型要点。     

方圆北楼太阳能空调系统设计

以方圆北楼空调供热综合系统设计为背景，在深入了解太阳能制冷和采暖原理的基础上，综述太阳能制冷技术的发展历史以及国内外研究现状，分析太阳能制冷循环和采暖的意义，并通过热力计算，选用平板型集热器、单级溴化锂制冷机组和平板型热水器为系统主要设备。另外还对该技术进行技术可行性和经济性分析，对于利用现有太阳能热水器技术开发制冷空调具有现实意义。     

太阳能地板辐射采暖技术探析

随着我国经济以及科技的快速发展进步,我们发现我国的采暖技术越来越先进。在众多的采暖技术中,太阳能地板辐射采暖,是一种科技水平较高的方法。这种方法将太阳能当做热量来源,它有很多的优点:节约能源、避免污染。这种方法可以说是一种非常环保的采暖法。文章具体介绍了这种方法的工作原理以及构成等要素,以大连的一个实例进行了具体的讲解,目的是为了更好地促进我国采暖事业的发展前进。     

教学楼太阳能-低温热水地板辐射采暖应用价值分析

太阳能-低温热水地板辐射采暖是一种新型的采暖形式,本文系统的分析了其在教学楼应用中的优势,并用一算例对其应用的经济性做出了评价,结果表明太阳能-低温热水地板辐射采暖具有很高的经济价值,且由于不消耗一次能源,也具有极大的环保价值。     

浅析太阳能在暖通空调中的应用

详细分析太阳能在暖通空调中的应用,探讨太阳能在采暖、空调制冷、供热等方面的技术应用和各自的特点.     

香格里拉机场候机楼太阳能地面辐射采暖系统应用与得失

对香格里拉机场候机楼采暖设计进行总结,通过室内地板采暖系统、太阳能集热系统计算和分析,提出了利用太阳能作为采暖能源时,在设计上要注意的问题和相应的技术措施。     

新型高效太阳能制冷技术

对传统太阳能制冷技术进行分类总结,指出其热力学局限性,提出一种太阳能制冷新模式.对光纤小碟太阳能聚光集热系统进行介绍,并对其性能进行初步评价,指出利用光纤小碟太阳能聚光集热系统同时驱动气体透平机发电制冷和两级吸收式制冷机,实现太阳能的梯级利用,是获得高效太阳能制冷的新途径.对一个这样的综合系统进行初步理论计算,得到其净COP值为1.4,达到燃油发电制冷的水平.     

Optimal Location to Use Solar Energy in an Urban Situation

This study conducted in Lima, Peru, a combination of spatial decision making system and machine learning was utilized to identify potential solar power plant construction sites within the city. Sundial measurements of solar radiation, precipitation, temperature, and altitude were collected for the study. Gene Expression Programming (GEP), which is based on the evolution of intelligent models, and Artificial Neural Networks (ANN) were both utilized in this investigation, and the results obtained from each were compared. Eighty percent of the data was utilized during the training phase, while the remaining twenty percent was utilized during the testing phase. On the basis of the findings, it was determined that the GEP is the most suitable network for predicting the location. The test state’s Nash-Sutcliffe efficiency (NSE) was 0.90, and its root-mean-square error (RMSE) was 0.04. Following the generation of the final map based on the results of the GEP model, it was determined that 9.2% of the province’s study area is suitable for the construction of photovoltaic solar power plants, while 53.5% is acceptable and 37.3% is unsuitable. The ANN model reveals that only 1.7% of the study area is suitable for the construction of photovoltaic solar power plants, while 66.8% is acceptable and 31.5% is unsuitable.     

Solar pond technology

Solar pond technology has made substantial progress in the last fifteen years. This paper reviews the basic principles of solar ponds and the problems encountered in their operation and maintenance. The factors which influence the technical and economic viability of solar ponds for thermal applications and power generation have been discussed.     

Observations of p-type semiconductivity in titanium dioxide at room temperature

Titanium dioxide (TiO₂) is widely considered to be a strongly n-type semiconductor due to its tendency for oxygen deficiency. In this work, however, room temperature p-type semiconductivity has been observed in rutile TiO₂, as determined using surface photovoltage spectroscopy and cyclic voltammetry subsequent to controlled processing at elevated temperatures. In particular, room temperature p-type semiconductivity has been imposed via strong oxidation [p(O₂) = 75 kPa] at elevated temperatures (1273 K), followed by rapid cooling in the same gas phase. It is reasoned that under such conditions, the observed p-type behaviour is due to the formation of titanium vacancies (acceptor-type ionic defects) at the TiO₂ surface. It is also concluded that the extremely slow diffusion kinetics of these defects towards the bulk is what limits the p-type behaviour to the surface and near surface regions. Nevertheless, this could be overcome by applying appropriately lengthy annealing times. The reported observation of p-type semiconductivity in TiO₂ is expected to have far reaching consequences for this intensely researched material.     

Advances in Cost-Efficient Thin-Film Photovoltaics Based on Cu(In,Ga)Se2

In this article, we discuss the leading thin-film photovoltaic (PV) technology based on the Cu(In,Ga)Se₂ (CIGS) compound semiconductor. This contribution includes a general comparison with the conventional Si-wafer-based PV technology and discusses the basics of the CIGS technology as well as advances in world-record-level conversion efficiency, production, applications, stability, and future developments with respect to a flexible product. Once in large-scale mass production, the CIGS technology has the highest potential of all PV technologies for cost-efficient clean energy generation.     

户式太阳能空调应用方式分析

太阳能是绿色能源，户式太阳能空调应用的途径分为供热与制冷两部分，本文从技术经济性，如何计算太阳能设备间的匹配等几个方面进行了探讨。     

太阳能选择性涂层的研制

分析了太阳能选择性吸收涂层的光学性能 ,介绍了利用电解着色方法制备Sn/Al2 O3 复合涂层的实验过程 ,报道了利用扫描电镜和俄歇能谱仪测量的结果     

Hydrothermal processing for obtaining of BiVO4 nanoparticles

Nano-sized monoclinic BiVO₄ particles were effectively obtained by hydrothermal processing and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible absorption spectroscopy, micro-Raman scattering spectroscopy and Fourier transform infrared spectroscopy. The XRD patterns revealed that the hydrothermal conditions (180 °C over a wide range of processing time) are favorable for the formation of monophasic monoclinic BiVO₄ nanoparticles. The TEM results represented that samples as-prepared in this route had a decrease of grain size with the processing time increased from 10 to 20 h. It also indicated that a relationship between its local structures and the hydrothermal time exists based upon the spectral characterization.     

Synthesis and photo activity of flower-like anatase TiO2 with {001} facets exposed

Developing photocatalysts with specific morphology promises good opportunities to discover the geometry-dependent properties. Herein, flower-like anatase TiO₂ assemblies with dominant {001} facets exposed were successfully synthesized via a simple, economical hydrothermal route with titanium sulfate and hydrofluoric acid. Their surface morphology and structure were investigated by scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, X-ray diffraction, and Brunauer-Emmet-Teller N₂ gas adsorption-desorption isotherms. The optical property and the photo-induced charge carriers of the flower-like TiO₂ were studied by UV-vis diffuse reflectance spectroscopy and transient photovoltage technique. The flower-like TiO₂ particles exhibited a good photocatalytic activity in degrading rhodamine B.     

太阳能热利用技术在我国建筑节能中的应用与展望

本文系统地介绍了各种太阳能热利用技术在我国建筑物中的应用及发展现状,并结合中国国情特点,提出了一些有关我国太阳能热利用技术未来发展方向的建议.