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 studied.The results show that:(1)Under basic conditions(the water tank is 2 m long,1.2 m wide and 0.3 m high;the surface temperature of the water tank is 35 ℃,and the thickness 可 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 可 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 ℃.
composite bed integrating heat storage and heat dissipationsolar heatingheating modeheat dissipating capacity
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