000			03111cab a2200313Ia 45 0
001			u211460
003			SIRSI
008			160317s2015 ua ss b eng d
040			_aEAL
041			_aengbara
090			_aART ASEJ V36 NO1 10
100	1		_aYoussef, G. D. M
240	1	0	_aAlexandria science exchange journal, 2015 v. 36 (1) _h[electronic resource]: _ban international quarterly journal of science agricultural environments
245	1	0	_aImproving performance of the evaporative cooling system inside the greenhouses and its effect on tomato productivity _h[electronic resource].
246	1	5	_aتحسين أداء نظام التبريد التبخرى داخل البيوت المحمية وتأثيرها على إنتاجية الطماطم.
300			_ap.80-94
504			_aIncludes references.
520			_aAn experimental study was conducted to determine the performance of two evaporative cooling systems, as well as the gradients of temperature and humidity along a greenhouse. The first system was the cooling unit, (CU) compared with the traditional fan-pad one, (F-P). The cooling unit was connected with two perforated ducts inside the greenhouse. The air temperatures and relative humidities on the longitudinal axis were measured outside and just after leaving the media and at each one meter from the pad media. They were also, measured in the traverse axis parallel to the pad media at distances 0.5, 1.5, 2.5 and 3.5 m from the edge of the greenhouse. A steady state mathematical model was modified to predict the greenhouse air temperature according to the state of the air just leaving the cooling media. According to the experimental results, the non-uniform temperature changes were observed along the greenhouses for the two systems. The average temperatures of the CU greenhouse were 27.9, 30.4, 33.2, 29.1 and 27.9 °C for ou.tside ambient temperatures of 28.7, 32.4, 35.4, 32.1 and 29.4 °C, respectively. The ranges of temperature gradient inside the CU greenhouse were 2.1, 2.1, 2.2, 2.2, and 2.1 °C. While in the F-P greenhouse, they were 5.9, 7.4, 8.2, 5.9 and 6.1 °C for the same ambient temperatures. The average air temperature entering to greenhouse was approximately 6.82 and 7.09c lower than the outside air temperature for CU and F-P systems. The greenhouse of CU system was higher in the relative humidity than F-P one. The average relative humidities were 69.0 and 61.8% for the CU and Fp greenhouses, respectively, with increase percent 12.38%. The averages CU efficiencies were 77.55% and 74.79o/o in the first and second days, respectively, while they were 72.97% and 70.19% for the same days for F-P system.
546			_aSummary in Arabic.
650		0	_aTomatoes _xYield
650		0	_aTomatoes _xCooling
650		0	_aTomatoes _xEffect of temperature on
650		0	_aGreenhouses plants
700	1		_aYakout, T. R.
700	1		_aMostafa, Doaa, M.
773	0		_tAlexandria Science Exchange Journal. _g2015.v.36(1) _x1110-0176 _7nnas _wu193445
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2015/ASEJ/3615/1/80.pdf _zFull Text Article
596			_a1
942			_cAR _2lcc
999			_c60462 _d60462