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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.18, no.1, 2009³â, pp.29-39
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( Utilization of $CO_2$ Influenced by Windbreak in an Elevated Production System for Strawberry ) |
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| µþ±â Àç¹è¿ë ¿Â½Ç ³» Àç¹è º¥Ä¡¿¡¼ »ý»ê·®À» ³ôÀ̱â À§ÇÏ¿© º¥Ä¡ ÁÖÀ§¿¡¼ ÀÌ»êÈź¼Ò¸¦ °ø±ÞÇÏ´Â °æ¿ì ȯ±â µî¿¡ ÀÇÇÑ Ç³¼ÓÀ¸·Î ÀÎÇÏ¿© ÀÛ¹° ÁÖº¯ÀÇ ÀûÁ¤°¡½º ³óµµ°¡ À¯ÁöµÇÁö ¸øÇÏ´Â Çö»óÀÌ ¹ß»ýÇÑ´Ù. º» ¿¬±¸¿¡¼´Â ÀÌ»êÈź¼Ò¸¦ º¸Á¸½Ã۰íÀÚ º¥Ä¡ ÁÖº¯¿¡ ¹æÇ³¸·À» ¼³Ä¡ÇÏ´Â ¹æ¾È¿¡ ´ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ¿Â½Ç ³» º¥Ä¡¿Í ¹æÇ³¸·À» 2Â÷¿ø CFD ½Ã¹Ä·¹À̼ÇÀ¸·Î ¸ðµ¨¸µÇÏ°í ¿Â½Ç ³» °ø±âÀÇ Ç³¼Ó°ú ÀÌ»êÈź¼ÒÀÇ °ø±ÞÀ» ±¸ÇöÇÏ¿© º¸Á¸µÇ´Â ÀÌ»êÈź¼ÒÀÇ ³óµµ ºÐÆ÷¸¦ »ìÆìº¸¾Ò´Ù. ¶ÇÇÑ À̸¦ ÅëÇÏ¿© ¼³°èÇÑ ¿Â½ÇÀÇ È¯°æÁ¶°Ç¿¡¼ÀÇ ÀûÁ¤ÇÑ ¹æÇ³¸· ¼³Ä¡ ³ôÀ̸¦ Á¦¾ÈÇϰíÀÚ ÇÏ¿´´Ù. ½Ã¹Ä·¹À̼ǿ¡¼ ±¸ÇöÇÑ ¿Â½Ç ³» dz¼ÓÁ¶°ÇÀº 0.5, 1.0, 1.5 m/sÀ̰í, ¹æÇ³¸·ÀÇ ³ôÀÌ´Â ¹Ì¼³Ä¡, 0.15, 0.30 mÀ̰í, °¢ Á¶°Ç¿¡¼ÀÇ ÀÌ»êÈź¼Ò ³óµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¼³°è»óÀÇ ÆíÀÇ¿Í ½Ã¹Ä·¹À̼ÇÀÇ °£¼Òȸ¦ À§ÇÏ¿© º¥Ä¡À§ÀÇ ÀÛ¹°Àº ¾ø´Â °ÍÀ¸·Î °¡Á¤ÇÏ¿´´Ù. ÀϹÝÀûÀÎ ¿Â½Ç ³»ÀÇ Ç³¼Ó Á¶°ÇÀº 1.0 m/s·Î, ½Ã¹Ä·¹ÀÌ¼Ç °á°ú ÀÌ ¶§ º¥Ä¡ À§¿¡¼ÀÇ Æò±Õ ÀÌ»êÈź¼Ò ³óµµ´Â ¹æÇ³¸· ¹Ì¼³Ä¡ ½Ã 420 ppm, ¹æÇ³¸· ¼³Ä¡ ³ôÀÌ 0.15 mÀÏ ¶§ 580 ppm, 0.30 mÀÏ ¶§ 653 ppmÀ¸·Î ³ªÅ¸³µ´Ù µþ±âÀÇ ÃÖ´ë »ý»ê·®À» À§ÇÑ ÀûÁ¤ »ýÀ° ÀÌ»êÈź¼Ò ³óµµ°¡ $600{sim}800ppm$ Á¤µµÀÎ °ÍÀ» °í·ÁÇÏ¿©, ÀÌ¿Í °°Àº ȯ°æÁ¶°Ç¿¡¼ÀÇ ¹æÇ³¸·ÀÇ ¼³Ä¡ ³ôÀÌ´Â 0.30m°¡ Àû´çÇÒ °ÍÀ¸·Î ÆÇ´ÜÇÏ¿´À¸³ª ÀÌ»êÈź¼Ò °ø±ÞÁ¶°Ç, ÀÛ¹°ÀÇ ¹èÄ¡ µîÀÇ Á¶°Çº¯È¿¡ µû¸¥ »óȲ¿¡¼ÀÇ ¿¬±¸°¡ Ãß°¡ÀûÀ¸·Î ¼öÇàµÇ¾î¾ß ÇÒ °ÍÀÌ´Ù. ÀÌó·³ ¹æÇ³¸·ÀÇ ¼³Ä¡°¡ ¿Â½Ç ³»¿¡ ½ÃºñÇÑ ÀÌ»êÈź¼Ò¸¦ ÀÛ¹° ÁÖº¯¿¡ ¸Ó¹«¸£°Ô ÇÏ´Â È¿°ú°¡ »ó´çÇÔÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ¼³°èÇÑ È¯°æÁ¶°Ç¿¡¼ ÀÛ¹°º°·Î ÀûÁ¤ÇÑ ¼öÁØÀÇ ÀÌ»êÈź¼Ò·®ÀÌ °ø±ÞµÇ°í ÀÖ´ÂÁö¸¦ ÆÇ´ÜÇϱâ À§ÇÏ¿© CFD ±â¼úÀÌ ÀÌ¿ëµÉ ¼ö°¡ ÀÖÀ½À» º¸¿´´Ù. |
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| The influence of windbreak to minimize the ventilation velocity near the plant canopy of a greenhouse strawberry was thoroughly investigated using computational fluid dynamics (CFD) technology. Windbreaks were constructed surrounding the plant canopy to control ventilation and maintain the concentration of the supplied $CO_2$ from the soil surface close to the strawberry plants. The influence of no windbreak, 0.15 m and 0.30 m height windbreaks with varied air velocity of 0.5, 1.0 and 1.5 m/s were simulated in the study. The concentrations of supplied $CO_2$ within the plant canopy of were measured. To simplify the model, plants were not included in the final model. Considering 1.0m/s wind velocity which is the normal wind velocity of greenhouses, the concentrations of $CO_2$ were approximately 420, 580 and 653 ppm ($1{ imes}10^{-9}kg/m^3$) for no windbreak, 0.15 and 0.30 m windbreak height, respectively. Considering that the maximum concentration of $CO_2$ for the strawberry plants was around 600-800 ppm, the 0.30 m windbreak height is highly recommended. This study revealed that the windbreak was very effective in preserving $CO_2$ gas within the plant canopy. More so, the study also proved that the CFD technique can be used to determine the concentration of $CO_2$ within the plant canopy for the plants consumption at any designed condition. For an in-depth application of this study, the plants as well as the different conditions for $CO_2$ utilization, etc. should be considered. |
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| Ű¿öµå |
| °í¼³Àç¹è;°øÁßÀç¹è;µþ±â;¿Â½Ç;ÀÌ»êÈź¼Ò ½Ãºñ;Àü»êÀ¯Ã¼¿ªÇÐ;computational fluid dynamics (CFD);$CO_2$ utilization;elevated cultivation;greenhouse;Strawberry; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.18, no.1, 2009³â, pp.29-39
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200916263468249)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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