INVESTIGATE STEADY-STATE HEAT AND MASS BALANCE FOR GREENHOUSES PAD-FAN COOLING SYSTEM | ||
| Misr Journal of Agricultural Engineering | ||
| Article 70, Volume 25, Issue 4, October 2008, Pages 1410-1437 PDF (438.93 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjae.2008.190276 | ||
| Authors | ||
| M. H. Hatem1; K. M. Abdelbary2; K.M. Morsy3 | ||
| 1Prof. Agric. Eng. Dept., Fac. of Agric., Cairo Unvi., Egypt. | ||
| 2Assist. Prof. Agric. Eng. Dept., Fac. of Agric., Cairo Unvi., Egypt. | ||
| 3Agric. Engineer, Economic Affairs Sector, Ministry of Agriculture., Egypt. | ||
| Abstract | ||
| This research work aims to investigate the steady-state heat and mass balance for greenhouses that use pad-fan cooling system. It also studies the evaporative cooling system efficiency in fiberglass modified Quonset greenhouse. Dry-bulb and wet-bulb temperature were measured, relative humidity and cooling efficiency were calculated and predicted dry-bulb temperature and relative humidity inside the greenhouse throughout the proposed simple model was performed. Dry–bulb temperature and relative humidity were homogeneous altitude along the fiberglass greenhouse under investigation (16 m long, average of fan air velocity was 5.23 m/s and pad-face air velocity was 1.2 m/s). The obtained results showed that, the predicted data of dry-bulb temperature inside the greenhouse were validated well with that measured. | ||
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