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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.20, no.2, 2011³â, pp.72-77
ÇÃ¶ó½ºÆ½¿Â½Ç ÇǺ¹ÀçÀÇ °ü·ù¿­Àü´Þ°è¼ö º¯È­
( Variation of the Overall Heat Transfer Coefficient of Plastic Greenhouse Covering Material )
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º» ¿¬±¸´Â ±¹³» »ó¾÷¿ë ¿Â½Ç ÇǺ¹ÀçÀÇ °ü·ù¿­Àü´Þ°è¼ö¸¦ »êÁ¤È÷´Âµ¥ ÇÊ¿äÇÑ ±âÃÊÀڷḦ Á¦°øÇϱâ À§ÇÏ¿© ÃÖ±Ù ±¹³»¿¡ ¸¹ÀÌ º¸±ÞµÇ¾î »ç¿ëµÇ°í ÀÖ´Â ÇÃ¶ó½ºÆ½Çʸ§À¸·Î ÇǺ¹µÈ ¿Â½Ç¿¡ ´ëÇØ °ü·ù¿­·®À» ÃøÁ¤ÇÏ°í °ü·ù¿­Àü´Þ°è¼öÀÇ º¯È­¸¦ ºÐ¼®ÇÏ¿´À¸¸ç ±× °á°ú¸¦ ¿ä¾àÇÏ¸é ´ÙÀ½°ú °°´Ù. ¿Â½Ç ³»¿ÜºÎ ¿ÂµµÂ÷¿¡ µû¸¥ °ü·ù¿­Àü´Þ°è¼öÀÇ º¯È­¸¦ ºÐ¼®ÇÑ °á°ú ÇǺ¹ÀÇ Ãþ¼ö¿¡ µû¶ó ¾ÈÁ¤µÈ °ü·ù¿­Àü´Þ°è¼ö¸¦ ³ªÅ¸³»°Ô µÇ´Â ¿Â½Ç ³»¿ÜºÎ ¿ÂµµÂ÷ÀÇ °ªÀÌ ´Ù¸£°Ô ³ªÅ¸³µ±â ¶§¹®¿¡ ¿Â½Ç ÇǺ¹Àç¿¡ ´ëÇÑ °ü·ù¿­Àü´Þ°è¼ö¸¦ °áÁ¤ÇÒ ¶§¿¡´Â ÇǺ¹Ãþ¼öº°·Î ¾ÈÁ¤µÈ °ªÀ» ³ªÅ¸³»´Â ¿Â½Ç ³»¿ÜºÎ ¿ÂµµÂ÷ ¹üÀ§¿¡¼­ÀÇ °ü·ù¿­Àü´Þ°è¼ö¸¦ äÅÃÇÏ¿©¾ßÇÒ °ÍÀÌ´Ù. ¿ÂµµÂ÷ÀÌ¿¡ µû¸¥ °ü·ù¿­Àü´Þ°è¼öÀÇ º¯È­ °æÇâÀº ±âÁ¸ÀÇ ¿¬±¸°á°ú¿Í Àß ÀÏÄ¡ÇÏ¿´À¸³ª ¾ÈÁ¤µÈ °ªÀ» ³ªÅ¸³»´Â ¿ÂµµÂ÷ÀÌÀÇ ±¸Ã¼ÀûÀÎ °ªÀº ´Ù¸£°Ô ³ªÅ¸³µ±â ¶§¹®¿¡ ÀÌ¿¡ ´ëÇÑ Ãß°¡ÀûÀÎ ¿¬±¸°¡ ÇÊ¿äÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. dz¼Ó¿¡ µû¸¥ °ü·ù¿­Àü´Þ°è¼öÀÇ Áõ°¡À²Àº ¿¬±¸ÀÚ¿¡ µû¶ó ¸¹Àº Â÷À̰¡ ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ÀÌÁßÇǺ¹¿Â½ÇÀ̳ª ĿưÀ» ¼³Ä¡ÇÑ ¿Â½Ç°ú °°ÀÌ º¸¿Â¼ºÀ» ³ôÀÎ ¿Â½ÇÀº ÀÏÁßÇǺ¹¿Â½Ç¿¡ ºñÇØ dz¼Ó¿¡ µû¸¥ °ü·ù¿­ ¼Õ½ÇÀÌ ´õ ÀÛ´Ù´Â »ç½ÇÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. °ü·ù¿­Àü´Þ°è¼öÀÇ ±âÁ¸ ¿¬±¸°á°úµéÀ» ºÐ¼®ÇÑ °á°ú ¿¬±¸ÀÚ¿¡ µû¶ó °ªÀÌ Â÷À̰¡ ÀÖ¾ú±â ¶§¹®¿¡ ±¹³» ¿Â½ÇÀÇ Á¤È®ÇÑ ³­¹æºÎÇÏ·®À» »êÁ¤Çϴµ¥ ÇÊ¿äÇÑ ÀûÀýÇÑ °ü·ù¿­Àü´Þ°è¼ö¸¦ Á¦½ÃÇϱâ À§Çؼ­´Â ¿ì¼± ÃøÁ¤À» À§ÇÑ Ç¥ÁØÈ­µÈ ȯ°æ±âÁØÀÌ ¸¶·ÃµÉ Çʿ䰡 ÀÖÀ¸¸ç, ¶ÇÇÑ ±¹³»¿¡¼­ ½ÇÁ¦·Î »ç¿ëµÇ°í ÀÖ´Â ÁÖ¿ä ÇǺ¹À纰·Î ±¸Ã¼ÀûÀÎ °ü·ù¿­Àü´Þ°è¼ö°¡ ±¸ÇØÁ®¾ß ÇÒ °ÍÀÌ´Ù.
The objective of the present study is to provide the basic data necessary for estimating the overall heat transfer coefficient of commercial plastic greenhouse. The heat flow through covering of greenhouses was measured and the variation of overall heat transfer coefficient was analyzed. Because the inside-outside temperature difference of greenhouse to indicate the stabilized overall heat transfer coefficient was different depending on the number of covering layers, the actual overall heat transfer coefficient should be decided in range of inside-outside temperature difference to make the coefficient constant for each covering method. The variation trend of the overall heat transfer coefficient according to the inside-outside temperature difference corresponded with the existing research results, but the specific values of temperature difference to present the stabilized overall heat transfer coefficient were different each other. The increase rates of overall heat transfer coefficient with wind speed were quite dissimilar among several research results and the quantity of heat loss through covering according to the wind speed in the double layers covered or curtained greenhouse was less than that in the single layer covered greenhouse. Because there was large variations among the values of overall heat transfer coefficient for the polyethylene film greenhouses, it was required to establish the standardized environmental condition for experiment measuring heat flow through covering in commercial greenhouse.
 
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.20, no.2, 2011³â, pp.72-77
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201125247229352)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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