THE EFFECT OF PAD COOLING MATERIALS ON ENVIRONMENTAL CONTROL FOR GREENHOUSES | ||
| Egyptian Journal of Agricultural Research | ||
| Article 29, Volume 83, Issue 1, March 2005, Pages 361-371 PDF (2.59 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2005.242807 | ||
| Authors | ||
| AHMED M. KASSEM; AHMED M. F. BAHNASSY; YUSUF F. SHAROBEEM | ||
| Agricultural Engineering Research Institute, Agricultural Research Center, Dokki, Giza, Egypt | ||
| Abstract | ||
| Pad cooling system is a solution of the heat problem in cucumber greenhouses. The objective of this research is to study the possibility of using local materials such as palm fibers and sponge to replace the imported pads (Corrugated cellulose). Three gable greenhouses were used to compare three different pad cooling system using palm fiber, sponge and corrugated cellulose. The experiments were carried out during the summer months (June, July and August) of year 2002 and 2003. The results indicated that the best cooling efficiency was 79.4% obtained in greenhouse with corrugated cellulose and the minimum was 49.2% in greenhouse with spongy pad. The experiment showed that there were slight difference of coding efficiency between palm fiber and corrugated cellulose. The mean cooling efficiency for corrugated cellulose, palm fiber and sponge were 79.4, 71.6 and 49.2 respectively. The total fresh yields were 13255.4, 13065.0 and 8353.4 kg for corrugated cellulose, palm fiber and sponge pad coding, respectively. | ||
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