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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.4, no.1, 1995³â, pp.59-67
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ÀÔÀÚÃæÀüÇü ÀÌÁߺ® ¿Â½Ç¿¡ °üÇÑ ¿¬±¸
( A Study on the Double-Wall Greenhouse Filled with Styrene Pellets ) |
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| This study was conducted to develope the automatic insulation system which control inside temperature of the greenhouse. For this purpose, the double- wall greenhouse and system which could automatically supply and discharge styrene pellets were constructed and abrasion of the pellets, blower ability, insulating property, transmittance and shading effect were analyzed by the experiments. The results obtained from this study can be summarized as follows : 1. It took an hour and fifteen minutes to supply and discharge about 2§© pellets in the experimental greenhouse. However, it is possible to reduce the operation time by proper selection of the blower and exhaust port, and by proper control of the supply and return pipe. 2. It was founded that the indirect delivery way was more profitable than the direct one in the supply and return of pellets. 3. When the transmittance was measured between 10 a.m. and 3 p.m., the average light transmissivity rate was 67%. 4. In winter nighttime, the inside temperature of the double- wall greenhouse with out the pellets was higher than the outside temperature by 3.4$^{circ}C$ on an average. However, the inside temperature of the double - wall greenhouse with insulated area 73% was higher than the outside by one 6.6$^{circ}C$ on an average, and the inside temperature of the greenhouse with insulated area 100% was higher than outside one by 13.5$^{circ}C$ on an average. Therefore, it was proved that the insulating ability of the double - wall greenhouse in nighttime was excellent. 5. When the outside temperature was 36.9$^{circ}C$ on an average, the inside temperature of the double- wail greenhouse with insulated area 100% was 3$0^{circ}C$ on an average. As the inside temperature was lower than the outside one by 7$^{circ}C$ on an average, we could know that the shading effects of the double- wall greenhouse were excellent in summer daytime. |
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| Ű¿öµå |
| ÀÌÁߺ®¿Â½Ç;ÆÞ·¹Æ®;´Ü¿;Â÷±¤;Åõ±¤¼º;double-wall greenhouse;pellets;insulation;shading;transmittance; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.4, no.1, 1995³â, pp.59-67
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511922404495)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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