Parametric study on thermal performance of horizontal earth pipe cooling system in summer
Parametric study on thermal performance of horizontal earth pipe cooling system in summer
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DOI：
10.1016/j.enconman.2016.01.061
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发表时间：
2016-04-15
影响因子：
10.4
通讯作者：
Hassan, N. M. S.
中科院分区：
文献类型：
--
作者：
Ahmed, S. F.;Amanullah, M. T. O.;Hassan, N. M. S.
能源的合理利用及其相关的温室气体排放已成为可持续环境和经济的关键问题。当今的建筑物消耗大量能源，约占全球能源消耗的40%。为了克服这些问题并通过节能措施找到新技术，相关研究正在进行中。地埋管冷却技术的被动式空气冷却就是其中一种能够在建筑物中实现节能且无温室气体排放的技术。地埋管冷却系统的性能主要受空气流速、管长、管径、管材和埋管深度等参数的影响。本文研究了在澳大利亚罗克汉普顿炎热潮湿的亚热带气候下，这些参数对水平地埋管冷却系统热性能的影响。为了进行参数研究，利用模拟程序FLUENT 15.0为水平地埋管冷却系统建立了一个热模型。结果表明，空气流速、管长和管径对地埋管冷却性能有显著影响，其中管长对其他参数起主导作用。(C) 2016爱思唯尔有限公司。保留所有权利。
Rational use of energy and its associated greenhouse gas emissions has become a key issue for a sustainable environment and economy. A substantial amount of energy is consumed by today's buildings which are accountable for about 40% of the global energy consumption. There are on-going researches in order to overcome these and find new techniques through energy efficient measures. Passive air cooling of earth pipe cooling technique is one of those which can save energy in buildings with no greenhouse gas emissions. The performance of the earth pipe cooling system is mainly affected by the parameters, namely air velocity, pipe length, pipe diameter, pipe material, and pipe depth. This paper investigates the impact of these parameters on thermal performance of the horizontal earth pipe cooling system in a hot humid subtropical climate at Rockhampton, Australia. For the parametric investigation, a thermal model was developed for the horizontal earth pipe cooling system using the simulation program, FLUENT 15.0. Results showed a significant effect for air velocity, pipe length, and pipe diameter on the earth pipe cooling performance, where the pipe length dominated the other parameters. (C) 2016 Elsevier Ltd. All rights reserved.