Experimental investigation on the cooling performance of a novel grooved radiant panel filled with heat transfer liquid
Experimental investigation on the cooling performance of a novel grooved radiant panel filled with heat transfer liquid
复制标题
新型导热液体沟槽辐射板冷却性能实验研究
DOI：
10.1016/j.scs.2019.101638
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发表时间：
2019-10-01
影响因子：
11.7
通讯作者：
Chen, Dong
中科院分区：
文献类型：
--
作者：
Lv, Guoquan;Shen, Chao;Chen, Dong
天花板辐射冷却系统被认为是一种很有前途的技术，具有巨大的节能潜力，适合温度和湿度的独立控制。本文开发了一种新型的冷却辐射板，它由顶部平板、底部凹槽板组成，两块板的间隙中填充有传热液体。进行了一系列测试，结果表明，在测试条件下，该辐射板的制冷量可达93.5 W/m(2)至153.3 W/m(2)，比传统金属辐射板高18%至25%。此外，新型辐射板表面的最大温差<2.9℃，比传统的冷水管直接接触辐射板而无需填充液体的辐射板要小。这些优点表明辐射板适合湿热环境。员工活动区域室内空气垂直温度梯度为2.31-2.89℃/m，满足ISO 7730的要求。而且，辐射板在填充不同种类的液体时可以改变冷却性能，从而可以适用于不同的场合，适合串联使用。
Radiant ceiling cooling system is considered as a promising technique, which has huge potential to energy saving and suits for independent control of temperature and humidity. In this paper, a novel radiant panel was developed for cooling, which consists of top flat plate, bottom groove plate, and heat transfer liquid filling in the gap of two plates. A series of tests were conducted and results suggested that the cooling capacity of this radiant panel could reach at 93.5 W/m(2) to 153.3 W/m(2) in test condition, which was higher 18% similar to 25% than that of traditional metal radiant panels. Besides, the maximum temperature difference on the surface of the novel radiant panel was < 2.9 degrees C which is smaller than traditional one that is designed as cold-water tubes touching radiant plate directly without filled liquid. These advantages indicate that the radiant panel is suitable for hot and humid environment. The vertical temperature gradient of indoor air within staff activity area was 2.31-2.89 degrees C/m, meeting the requirements of ISO 7730. Moreover, the cooling performance of radiant panel can be changed when filled with different kinds of liquids, so that the radiant panel can be applied in different occasions and suitable for using in series.