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Implementation of a Radiant Heating and Cooling Model into an Integrated Building Energy Analysis Program 在综合建筑能源分析程序中实施辐射供暖和制冷模型
公平比较辐射供暖和制冷系统与传统送风系统的能源效率一直是工程设计界的一个长期目标。然而,这种比较只能通过对辐射系统的瞬态性质、辐射系统的辐射和对流传热组合以及两个空间调节系统产生的热环境的基本分析来进行。已经开发了一个包含所有这些特征的模拟工具。该模型使用传导传递函数的导数,其中包括嵌入源或汇的影响,以准确地解释辐射系统中的瞬态热传导。 该模型已应用于一个著名的基于热平衡的能量分析程序中,并考虑了辐射系统表面的辐射和对流传热。由于能量分析程序内置了三个已建立的热舒适模型,因此可以根据产生的热舒适参数而不是简单的平均空气温度来比较能耗。此外,由于内表面温度随时可用,该模型可评估辐射冷却系统的冷凝潜力,因此可用于指示混合系统何时实施辐射加热和冷却模型,并给出一个比较辐射系统和传统强制冷却系统能耗的示例- 提供同等舒适度的空气系统。作者:Strand R K.,Pedersen C O.引用关键词:1997年,辐射加热,辐射冷却,计算机程序,计算,比较,能耗,能源,效率,暖风加热,热流,热舒适,空气温度测定:研讨会,ASHRAE Trans。1997年,第103卷,第一部分
The ability to fairly compare the energy efficiency of radiant heating and cooling systems to conventional forced-air systems has been a long-standing goal of the engineering design community. Such a comparison can only be made, however, through the fundamental analysis of the transient nature of the radiant system, the combined radiative and convective heat transfer from the radiant system and the resulting thermal environment produced by both space conditioning systems. A simulation tool that incorporates all of these characteristics has been developed. The model uses a derivative of conduction transfer functions that includes the effects of embedded sources or sinks to accurately account for the transient heat conduction in the radiant system. This model has been implemented into a well-known heat-balance-based energy analysis program and takes into account both the radiative and convective heat transfer at the surface of the radiant system. Due to the fact that the energy analysis program has three established thermal comfort models built into it, it is possible to compare energy consumption on the basis of resulting thermal comfort parameters rather than simply mean air temperature. Additionally, since interior surface temperatures are readily available, the model can evaluate radiant cooling systems for condensation potential and thus can be used to indicate when a hybriibes the implementation of the radiant heating and cooling model and presents an example comparing the energy consumption of a radiant system and a conventional forced-air system that provide equal levels of comfort. AUTHOR: Strand R K., Pedersen C O. CITATIONKEYWORDS: year 1997, Radiant heating, radiant cooling, computer programs, calculating, comparing, energy consumption, energy, efficiency, warm air heating, heat flow, thermal comfort, air temperature
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