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首页> 外文期刊>International journal of green energy >AN EXPERIMENTAL INVESTIGATION OF THE PASSIVE COOLING OF A BUILDING USING NIGHTTIME RADIANT COOLING
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AN EXPERIMENTAL INVESTIGATION OF THE PASSIVE COOLING OF A BUILDING USING NIGHTTIME RADIANT COOLING

机译：利用夜间辐射冷却对建筑物进行被动冷却的实验研究

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摘要

An experimental study to determine the feasibility of using noctumally cooled water for space cooling is presented. The experimental test rig consist of a room, flat plate sky radiator, a heat exchanger unit, a storage tank, pump, interconnecting pipes, and a control room. The test room has a dimension of 3.0 m × 3.0 m × 2.5 m and is made from 6 inch (0.15 m) hollow cement blocks. It has two windows and an access door while the roof is pitched at 12°. The cooling process occurs in two parts: the nocturnal part when water is cooled by night sky radiation and the diurnal part when the water cooled during the nocturnal part is circulated through a heat exchanger for space cooling. Series of tests were conducted under the meteorological condition the Federal University of Technology, Owerri, for the period of November, 2010 to March, 2011. Results obtained showed that with the facility in place, a room temperature of 26 to 28℃ could be maintained on a day when the maximum ambient temperature is 34℃. This corresponds to a temperature depression of up to 2.5℃ below the average room temperature, representing about 101 kJ of cooling. Thus, passive cooling using noctumally cooled water has a great potential in space cooling in the tropics.
机译：进行了一项实验研究，以确定使用夜冷却水进行空间冷却的可行性。实验测试台由一个房间，平板天窗散热器，一个热交换器单元，一个储罐，泵，互连管道和一个控制室组成。测试室的尺寸为3.0 m×3.0 m×2.5 m，由6英寸（0.15 m）的空心水泥块制成。它有两个窗户和一个检修门，而屋顶的倾斜角度为12°。冷却过程分为两部分：夜间通过夜空辐射冷却水的夜间部分和夜间部分，当在夜间部分冷却的水通过热交换器循环进行空间冷却时，则为昼夜部分。在气象条件下，于2010年11月至2011年3月在Owerri联邦理工大学进行了一系列测试。获得的结果表明，使用该设备，可以保持26至28℃的室温。在最高环境温度为34℃的一天。这对应于比平均室温低2.5摄氏度的温度下降，表示约101 kJ的冷却。因此，使用夜冷却水的被动冷却在热带地区的空间冷却方面具有很大的潜力。

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  • 来源
    《International journal of green energy》 |2014年第10期|1072-1083|共12页
  • 作者

    C. A. Okoronkwo; K. N. Nwigwe; N. V. Ogueke; E. E. Anyanwu; D. C. Onyejekwe; P. E. Ugwuoke;

  • 作者单位

    School of Engineering and Engineering Technology, Federal University of Technology, Owerri, Into State, Nigeria;

    School of Engineering and Engineering Technology, Federal University of Technology, Owerri, Into State, Nigeria;

    School of Engineering and Engineering Technology, Federal University of Technology, P.M.B. 1526, Owerri, Imo State, Nigeria;

    School of Engineering and Engineering Technology, Federal University of Technology, Owerri, Into State, Nigeria;

    School of Engineering and Engineering Technology, Federal University of Technology, Owerri, Into State, Nigeria;

    National Centre for Energy Research and Development, University of Nigeria, Nsukka, Nigeria;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Night sky radiation; Nocturnal cooling; Building; Temperature; Dry season;

    机译：夜空辐射;夜间冷却;建造;温度;旱季;

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