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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.18, no.3, 2009³â, pp.215-224
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( Analysis on the Uniformity of Temperature and Humidity According to Environment Control in Tomato Greenhouses )
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A survey on the actual state of heating, cooling, ventilation, and air-flow and experimental measurement of temperature and humidity distribution in tomato greenhouse were performed to provide fundamental data required in the development of air-flow control technology. In single-span plastic houses, which account for most of 136 tomato greenhouses surveyed, roof windows, ventilation and air-flow fans were installed in a low rate, and installation specs of those facilities showed a very large deviation. There were no farms installed greenhouse cooling facilities. In the hot air heating system, which account for most of heating type, installation specs of hot air duct showed also a large deviation. The exhaust air temperature and wind speed in hot air duct also were measured to have a big difference depending on the distance from the heater. We are using the maximum difference as indicator to determine whether temperature distribution is uniform. However if the temperature slope is not identical in greenhouse, it can't represent the uniformity. We analyzed relation between the maximum difference and the uniformity of temperature and humidity distribution. The uniformity was calculated using the mean and standard deviation of data from 12 measuring points. They showed high correlation but were represented differently by linear in the daytime and quadratic in the nighttime. It could see that the uniformity of temperature and humidity distribution was much different according to greenhouse type and heating method. The installation guidelines for ventilation and air-flow fan, the spread of greenhouse cooling technology for year-round stable production, and improvement of air duct and heating system, etc. are needed.
 
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°ø±âÀ¯µ¿;°ø±âÁ¶È­;¿Â½ÀµµºÐÆ÷;Å丶ÅäÀç¹è ¿Â½Ç;ȯ±â;air conditioning;temperature and humidity distribution;tomato greenhouse;ventilation and air circulation;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.18, no.3, 2009³â, pp.215-224
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200935535843631)
¾ð¾î : Çѱ¹¾î
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