沟槽结构充液式冷辐射板性能实验研究
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摘要
本文研究了一种沟槽结构充液式辐射板供冷性能。采用90°度和130°两种肋壁夹角的吊顶式冷辐射板,在人工环境小室内开展了不同供水温度及环境湿度下的实验。主要测试了这两种新型辐射板供冷时翅片表面温度分布以及结露现象。结果表明:两种辐射板翅片表面各点最大温差约为1℃,翅片夹角影响表面最低点温度的位置。两种辐射板结露360 min后,液滴沿着倾斜辐射板表面向夹角顶端滑动,聚集并脱落。
The performance in fluid-filled cold radiant panels with grooved structure is studied in this paper.Experiments were carried out in artificial environment chamber with ceiling-type cold radiation panels with rib wall angles of 90 and 130 degrees under different water supply temperatures and environmental humidity. The results show that the maximum temperature difference between the two kinds of radiation plate fins is about 1 ℃, and the angle between the fins affects the position of the lowest temperature on the surface. After the moisture condensation last for360 minutes, droplets slide along the inclined radiation plate surface towards the top of the angle, gather and fall off.
The performance in fluid-filled cold radiant panels with grooved structure is studied in this paper.Experiments were carried out in artificial environment chamber with ceiling-type cold radiation panels with rib wall angles of 90 and 130 degrees under different water supply temperatures and environmental humidity. The results show that the maximum temperature difference between the two kinds of radiation plate fins is about 1 ℃, and the angle between the fins affects the position of the lowest temperature on the surface. After the moisture condensation last for360 minutes, droplets slide along the inclined radiation plate surface towards the top of the angle, gather and fall off.
引文
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[6] John K Manley. Radiant heating, radiant cooling[M]. New York:Pratt Institute, 1954
[7] F E Giesecke. Hot-water heating and radiant heating and radiant cooling[M]. Austin:Technical Book Company. 1946
[8]费千,岳丹婷.液滴从固体壁面脱落条件的分析[J].大连海事大学学报(自然科学版), 1997,(3):92-95.
[2]吴海磊,钱吉生,张纯,等.集中空调通风系统对健康影响的量表调查研究[J].旅行医学科学, 2011, 17(2):46-48.
[3] R Bean, B W Olesen, K W Kim. History of radiant heating&cooling systems:part 1[J]. ASHRAE J., 2010, 52:40-41.
[4] K Zhao, X H Liu, Y Jiang. Application of radiant floor cooling in large space buildings[J]. Renew. Sustain. Energy Rev., 2016, 55:1083-1096.
[5]韩志涛,陈栋,廖维,等.基于沟槽结构的充液式辐射板供冷性能实验研究[J].建筑科学, 2018, 34(8):54-59.
[6] John K Manley. Radiant heating, radiant cooling[M]. New York:Pratt Institute, 1954
[7] F E Giesecke. Hot-water heating and radiant heating and radiant cooling[M]. Austin:Technical Book Company. 1946
[8]费千,岳丹婷.液滴从固体壁面脱落条件的分析[J].大连海事大学学报(自然科学版), 1997,(3):92-95.