摘要
为了研究太阳能在蓄热和建筑供暖方面的应用,设计了一种新型的集蓄热与散热于一体的复合型睡床,其特征是在床下设置蓄热水箱并在水箱上表面与床板之间设置可启闭的水平空气层。对复合型睡床进行动态热特性和影响因素研究。结果显示:(1)基本条件下(水箱尺寸长为2 m、宽为1.2 m、高为0.3 m,水箱表面温度35℃,床板与水箱之间的水平空气层厚度为20 mm),睡床总散热量为289.8 W,其中水箱上表面散热占比47.6%,侧面散热占比52.4%。床板上表面温度为21.1℃;(2)睡床总散热量随着水平空气层厚度的增加而增加,床板上表面温度随着水平空气层厚度的增加而降低,水平空气层厚度由20 mm升至50 mm时,总散热量增加了36.0%,床板上表面温度降低了2.1℃;(3)睡床总散热量与床板上表面温度均随着水箱表面发射率的增加而增加,水箱表面发射率由0.3升至0.9时,总散热量增加了30.5%,床板上表面温度提高了0.8℃。
In order to study the application of solar energy in heat storage and building heating,a new type of composite bed integrating heat storage and heat dissipation is designed,which is characterized that a water tank is under the bedplate,and an air layer which can be opened and closed is between the tank with the bedplate.The dynamic thermal characteristics and influencing factors of compound bed are 0 studied.The results show that:(1)Under basic conditions(the water tank is 2 m long,1.2 m wide and.3 m high;the surface temperature of the water tank is 35℃,and the thickness of the horizontal air layer between the bedplate and the water tank is 20 mm),the total heat dissipation is 289.8 W,of which the heat dissipation on the upper surface of the water tank accounts for 47.6%and that on the side accounts for 52.4%.The surface temperature of the bed is 21.1℃.(2)With the increase of the horizontal air layer thickness,the total heat dissipation of the bed increases,while the upper surface temperature of the bedplate decreases.When the thickness of horizontal air layer is increased from 20 mm to 50 mm,the total heat dissipation increases by 36.0%,and the upper surface temperature of bed plate decreases by 2.1℃.(3)The total heat dissipation of the bed and the upper surface temperature of the bedplate increase with the increase of the surface emissivity of the water tank.When the surface emissivity of water tank rises from 0.3 to 0.9,the total heat dissipation increases by 30.5%,and the upper surface temperature of bed board increases by 0.8℃.
作者
于翔宇
于国清
胡悦
沈洁翔
YU Xiangyu;YU Guoqing;HU Yue;SHEN Jiexiang(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《建筑节能（中英文）》
CAS
2024年第2期23-29,共7页
Building Energy Efficiency
关键词
蓄热-散热复合型睡床
太阳能供暖
散热状态
散热量
composite bed integrating heat storage and heat dissipation
solar heating
heating mode
heat dissipating capacity
