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Among the many design variables, the angle of inclination and temperature difference between upper and lower plates play an important role to heat losses flat-plate solar collector.
With the variation of temperature differences between two plates and plate angles of inclination, it is possible to investigate the effects on heat losses. Honeycomb structures are used in order to investigate reduction of heat losses and consequently improving the solar collector performances. It is known that honeycomb structures significantly reduces radiation heat loss as well as the heat loss due to convective heat transfer.
An experimental investigation is carried out for convective heat transfer across honeycomb structures confined in two parallel plates. Aspect ratios of honeycomb of 2 and 4 are utilized. Inclination angles employed are 0°, 30°, 45° and 60° from the horizontal.
The results are presented with Nusselt-Rayleigh number relationships.
With the variation of temperature differences between two plates and plate angles of inclination, it is possible to investigate the effects on heat losses. Honeycomb structures are used in order to investigate reduction of heat losses and consequently improving the solar collector performances. It is known that honeycomb structures significantly reduces radiation heat loss as well as the heat loss due to convective heat transfer.
An experimental investigation is carried out for convective heat transfer across honeycomb structures confined in two parallel plates. Aspect ratios of honeycomb of 2 and 4 are utilized. Inclination angles employed are 0°, 30°, 45° and 60° from the horizontal.
The results are presented with Nusselt-Rayleigh number relationships.
목차
ABSTRACT
1. 緖論
2. 實驗裝置 및 實驗方法
3. 實驗結果 및 考察
4. 結論
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