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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.10, no.2, 2001³â, pp.80-87
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( Effects of Shading Rate and Method of Inside Air Temperature Change in Greenhouse ) |
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| This study was conducted to provide basic data for the design of shading facility of greenhouse. The proper distance between external shading screen and roof surface, transmissivity of shading materials, and shading effects of external and internal shadings were analyzed. About a distance of 10 cm between inclined external shading screen and roof surface was enough to guarantee the external shading effect in the greenhouse without roof vent. The inside temperature of greenhouse installed with 85% internal shading screen was lower the maximum of 4$^{circ}C$ and mean of 2$^{circ}C$ than that with 55% internal shading screen in both natural ventilation and no ventilation condition. The difference of soil temperature between shading and no shading greenhouse was great, but the difference by shading rate or shading method was small. The performance of external shading for controlling inside temperature down was superior to that of the internal shading. The externally inclined shading screen parallel to the roof surface of greenhouse was more effective than the externally horizontal shading screen in controlling inside temperature of greenhouse without roof vent. |
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| ³»ºÎÂ÷±¤;¿ÜºÎÂ÷±¤;¿Â½Ç¸ðÇü;½ÇÇè¿Â½Ç;±¤Åõ°úÀ²;internal shading;external shading;greenhouse model;experimental greenhouse;transmissivity of solar radiation; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.10, no.2, 2001³â, pp.80-87
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920848290)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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