Effect of heat absorbing plate
Characterization of absorber plate structure perfect degree coefficient called the absorber plate efficiency factor, using the numerical and the absorber plate of metal material, plate thickness, heat pipe diameters and the size of the center distance etc.. Influence of heat absorbing plate efficiency factor on temperature is shown in figure 3. As can be seen from the graph, impact absorber plate efficiency factor for the water temperature or considerable. In the cold season, every increase of this factor o.1, temperature and daily maximum value increase of about 3 - 4 ℃. The summer more, up to 5 - 6 ℃.
To improve the heat absorbing plate efficiency factor need metal material with good heat conduction performance, appropriate and plate thickness, the heat absorbing pipe with wide, and reduce heat absorption pipe towel heart distance. These measures will undoubtedly increase the cost of the absorber plate. In addition, it should be emphasized that, to ensure the thermal contact heat pipe and heat absorbing plate good is one of the prerequisites for the absorber plate efficiency factor is higher. If the absorber plate or endothermic tube deformation can not be close to, or due to the use of a metal corrosion and increase the thermal resistance between the contact surfaces of the factory both, absorber plate efficiency factor will be reduced.
At present, good thermal contact until heat absorbing plate efficiency factor of around O.85, as in the heat capacity and the other parameters unchanged to improve this efficiency factor to 1.o, water temperature, the highest value can be increased by 4 - 5 ℃. |
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