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Ceiling Radiant Cooling Panels as a Viable Distributed Parallel Sensible Cooling Technology Integrated with Dedicated Outdoor Air Systems 天花板辐射冷却板是一种可行的分布式并行显热冷却技术 与专用室外空气系统集成
本文重点介绍了建筑辐射冷却系统与机械冷却系统的集成。应用适用的辐射和对流传热方程来说明代表该技术的散热率。此外,还介绍了控制辐射冷却板平均温度的基本传热方程,该方程是几何结构、材料、流速、冷却液温度和空间温度的函数。然后通过一个简单的例子来说明这些基本原理,其中辐射板与一个能够维持空间露水的专用室外空气系统集成- 点温度。在这种情况下,辐射板没有除湿功能,表面不会形成冷凝。该图涵盖了选择天花板辐射冷却板所需的每个迭代步骤,以及对由此产生的经济效益的简单分析。本文最后详细讨论了三个循环系统的功能集成:专用室外空气系统冷却盘管、辐射板网络和灭火网络。本文的结论是,目前不存在技术和经济障碍,无法抑制带有专用室外空气系统的天花板辐射冷却板的广泛应用。 专用室外空气系统的设计必须能够100%控制空间潜在负荷,从而控制空间露点温度。单位:双引用:研讨会论文,佐治亚州亚特兰大,2001年
Emphasis is placed upon the integration of ceiling radiant panel cooling technology with other building mechanical systems in this paper. Applicable radiative and convective heat transfer equations are applied to illustrate the rates of heat removal that are representative of this technology. Also presented are the fundamental heat transfer equations that govern the radiant cooling panel mean temperature as a function of geometry, materials, flow rates, coolant temperature, and space temperatures. These fundamentals are then illustrated by a simple example where the radiant panels are integrated with a dedicated outdoor air system capable of maintaining the space dew-point temperatures. In this context, the radiant panels have no dehumidification duty, and condensation will not form on the surfaces. The illustration covers each of the iterative steps required to select the ceiling radiant cooling panels and a simplistic analysis of the resulting economic benefits. The paper wraps up with a detailed discussion of the functional integration of three hydronic systems: the dedicated outdoor air system cooling coil, the radiant panel network, and fire suppression network. The paper concludes that technical and economic barriers do not currently exist to inhibit the widespread application of ceiling radiant cooling panels with dedicated outdoor air systems. The dedicated outdoor air systems must be designed to control 100% of the space latent loads and, hence, the space dew-point temperatures.Units: Dual
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