| Autor: |
Jalal M. Jalil, Mays Nasir Shaeli, Louy Qoaider |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
2017 International Renewable and Sustainable Energy Conference (IRSEC). |
| DOI: |
10.1109/irsec.2017.8477403 |
| Popis: |
In this numerical research, the heat transfer modes in solar collector are enhanced to increase its thermal performance by using louvered absorber. Three dimensional steady state turbulent air flow was solved by finite volume while three dimensional steady finite difference was used in glass and absorber walls. These two solutions have worked simultaneously to reach the final solution. Three geometries of absorber plate were studied; absorber without louvers, absorber with two lines louvers and absorber with three lines louvers. The performance of solar collector (higher mean air exit temperature) is improved by using louvered absorber. Numerical results are demonstrated for complete day of 16th-May-2015 in Baghdad. The efficiencies of collectors for the three cases were 47% 66% and 71% for without louvers two-line louvered absorber and three-line louvered absorber respectively. The percentage of improvement reached 28% in two lines of louvers and 33% in three lines of louvers. The increase in mean air temperature leads to decrease in absorber temperature this would be beneficial in two sides (air and absorber). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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