倾斜角度对三层真空玻璃热损失和日照增益的影响

Ramtin Serajian Tehrani, Mohsen Faizi, S. Hosseini, Saeid Norouzian Maleki
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引用次数: 0

摘要

每年花费数十万甚至数百万里亚尔用于家庭和工作场所的供暖和制冷。在全球范围内,建筑每年消耗的能源约占世界能源消耗总量的40- 45%。这些能源大部分用于照明、供暖、制冷和空调。所述期间气候条件的严重程度以及最近几十年的迅速发展和财富的增加都是促成因素。特别是,许多研究都集中在由于建筑围护结构和周围环境之间的热量传递而引起的热能储存上,以便预测热量传递率并制定最小化策略。然而,现代住宅建筑的设计和建造严重依赖于电气系统来控制内部建筑环境,这引起了更大的关注。同时,化石能源造成的环境污染大部分被利用,感觉有必要利用替代能源,并努力尽量减少能源消耗。因此,当地的注意力集中在提高住宅建筑的能源效率上。在建筑围护结构的各个组成部分中,窗户需要仔细设计,因为大部分的散热发生在那里。窗户造成了建筑物和环境之间不成比例的多余热量的增加和损失。太阳能热增益在决定建筑热性能方面起着重要作用,增加或减少太阳能增益在设计问题中至关重要。节能窗户应尽量减少热损失和空气泄漏;这在实践中是通过结合不同的技术解决方案来实现的,例如多层玻璃、低导热气体填充、涂漆玻璃表面、低排放涂层、边缘间隔和框架材料。采用合适的玻璃复合材料的最佳窗户设计可以大大降低住宅建筑中空调系统的能耗。在商业、工业和公共建筑中,最佳的窗户设计有可能降低照明以及供暖、通风和空调(HVAC)的成本。计算机模拟通常用于提供系统研究的扩展范围,并能够考虑参数的大范围和组合。本研究通过计算机模拟了倾斜角度对厚度为42 mm的三层真空玻璃散热的影响,并对其中一层氩气采用的三个主要技术因素进行了比较研究。这三个主要因素是传热系数、相对吸热率和太阳吸热系数。三重真空玻璃的模型是基于在德黑兰消费市场上可用的商业产品。结果表明,采用三层真空玻璃可减少70%以上的能量耗散,建筑南立面平均使用60度玻璃可优化太阳能的太阳能增益,而建筑的热量耗散没有明显增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Influence of Tilt Angle on Heat Loss and Solar Gain in Triple Vacuum Glazing
Hundreds of thousands and perhaps millions of riyals are spent each year for heating and cooling homes and workplaces. Globally, buildings are responsible for approximately 40-45 percent of the total world annual energy consumption. Most of this energy is used for the provision of lighting, heating, cooling and air conditioning. The severity of the climatic conditions in the period considered and the rapid development and increased affluence of recent last decades are among the contributing factors. In particular, much research is focused on thermal energy storage due to heat transfer between the building envelope and the surrounding environment, in order to predict the rate of heat transfer and to develop minimisation strategies. However, the design and construction of modern residential buildings, which are heavily reliant on electrical systems for control of the internal built environment, are causing greater concern. Also, most of the environmental pollution caused by fossil energy are used that feeling the need to make use of alternative energy and efforts to minimize the energy dissipation. As a result, local attention is focused on improving energy efficiency for residential buildings. Among the various components of the building envelope, windows require a careful design because much of the heat dissipation occurs there. Windows are responsible for a disproportionate amount of unwanted heat gain and heat loss between buildings and the environment. Solar heat gain plays a major role in determining the thermal performance of a building and increasing or decreasing solar gains can be of crucial importance in design problems. Energy efficient windows should minimize thermal losses as well as air leaks; this is achieved in practice by a combination of different technical solutions, such as multi-layer glazing, low thermal conductivity gas fills, painted glass surfaces, low-emission coatings, edge spacers, and frame materials. An optimal window design with a suitable glazing compound can considerably reduce the energy consumption of air conditioning systems in the residential buildings. In commercial, industrial and public buildings, an optimum window design has the potential to reduce the cost of illumination as well as that of heating, ventilation and air-conditioning (HVAC). Computer simulations are commonly used to provide an expanded scope of systematic study and enable consideration of wide ranges and combinations of parameters. In this study, by computer modeling of the thermal dissipation of impact of tilt angle on the triple vacuum glazing with a thickness of 42 mm, in which a layer of Argon gas used to compare the three main technical factors that have been examined. These three main factors are heat transfer coefficient, relative rate of heat absorption and solar heat gain coefficient. The model of triple vacuum glazing is based on a commercial product that is available on the consumer market in Tehran. The results show that using triple vacuum glazing reduction more than 70 percent in energy dissipation And 60 degree glass on average in the southern facade of the building to optimize solar gain of solar energy with no apparent increase in thermal dissipation in energy of building.
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