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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.6, no.3, 1997³â, pp.133-142
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±ÇÃë½Ä â°³Æó½Ã½ºÅÛÀÇ ¼Ò¿äÅäÅ©¸ðµ¨ °³¹ß
( Development of Theoretical Formulae for Calculation of Required Torque in Roll-up Type Ventilation System ) |
| ¹Ú±Ô½Ä;À̱â¸í;Á¤¼®Çö; °æºÏ´ëÇб³ ³ó°ú´ëÇÐ ³ó¾÷±â°è°øÇаú;°æºÏ´ëÇб³ ³ó°ú´ëÇÐ ³ó¾÷±â°è°øÇаú;°æºÏ´ëÇб³ ³ó°ú´ëÇÐ ³ó¾÷±â°è°øÇаú;
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| º» ¿¬±¸´Â ±ÇÃë½Ä â°³Æó±âÀÇ ¼³°è ¹× °³¹ß¿¡ ÇÊ¿äÇÑ ÀڷḦ Á¦½ÃÇϰíÀÚ ¼öÇàµÇ¾ú´Ù. ±âÁ¸ÀÇ ´Ü¼ø À̷и𵨽ÄÀ¸·Î´Â Á¤È®ÇÑ ±ÇÃëÅäÅ©¸¦ ¿¹ÃøÇÒ ¼ö ¾ø±â Àü¹®¿¡ ¸ðÇü½ÃÇè°ú ÇöÀå½ÃÇèÀ» ÅëÇÏ¿© »õ·Î¿î ±ÇÃë½Ä â°³ÆóÀåÄ¡ÀÇ ¼Ò¿äÅäÅ© ¸ðµ¨½ÄÀ» °³¹ßÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ÀÇ °á°ú¸¦ ¿ä¾àÇÏ¸é ´ÙÀ½°ú °°´Ù. 1. ±ÇÃë½Ä â°³ÆóÀåÄ¡¿¡ ÀÖ¾î¼ ±ÇÃëÅäÅ©´Â °îºÎ ±ÇÃë¸éÀÇ °æ»ç°¢À» µû¶ó Áõ°¡ÇÏ´Â °æÇâÀ» ³ªÅ¸³»°í ÀÖÀ¸¸ç, °æ»ç°¢ÀÌ 90$^{circ}$ÀÎ ¼öÁ÷¸é¿¡¼ Ãִ븦 ³ªÅ¸³Â°í ¼öÆí¸é¿¡¼ ÃÖ¼Ò°ªÀ» ³ªÅ¸³Â´Ù. 2. ¿Â½ÇÀÇ ±æÀÌ¿¡ µû¸¥ ¼Ò¿äÅäÅ©´Â ±ÇÃëÇÏÁßÀÇ Áõ°¡¿Í ÃàÆÄÀÌÇÁÀÇ º¯ÇüÀÇ ¿µÇâÀ¸·Î Áö¼öÇÔ¼öÀûÀ¸·Î ´Ã¾î³ª´Â °æÇâÀ» ³ªÅ¸³Â´Ù. 3. ±ÇÃë½Ä â°³ÆóÀåÄ¡ÀÇ ¼Ò¿äÅäÅ© °è»êÀÇ À̷нÄÀº T £½ W.(r£«a).sin$ heta$£«W.Cr.cos$ heta$·Î ³ªÅ¸³¾ ¼ö ÀÖÀ¸¸ç, ¿©±â¼ ÃàÆÄÀÌÇÁÀÇ ±ÇÃë¹Ý°æ r°ú ÃຯÇüº¸Á¤°è¼ö $alpha$¸¦ ´õÇÑ (r£«$alpha$)´Â ÃàÆÄÀÌÇÁÀÇ Ãִ뺯Çü°ªÀÎ $delta$¿¡ Áö¼öÇÔ¼öÀûÀ¸·Î ºñ·ÊÇÏ´Â °æÇâÀÌ ³ªÅ¸³µ´Ù. 4. ±ÇÃë¹Ý°æ r°ú ÃຯÇüº¸Á¤°è¼ö $alpha$ÀÇ ÇÕÀÎ (r£«$alpha$)Àº 22.2mm ÆÄÀÌÇÁ¿¡ 0.1mm ºñ´Ò·Î ÇǺ¹À» ÇßÀ» ¶§ (r£«$alpha$)£½2.10338$ imes$$10^{0.00779{delta}}$ ·Î ±¸ÇÒ ¼ö ÀÖÀ¸¸ç, 25.4mm ÆÄÀÌÇÁ¿¡¼´Â (r£«a)£½2.58063$ imes$$10^{(0.00452{delta})}$·Î ±¸ÇÒ ¼ö ÀÖ´Ù. 5. ±ÇÃë½Ä â°³ÆóÀåÄ¡ÀÇ ¼Ò¿äÅäÅ©¿¡¼ õâ µî °îºÎÀÇ °³Æó½Ã °í·ÁµÇ¾î¾ß ÇÒ ±¼¸§ÀúÇ× º¸Á¤°è¼ö´Â ÇǺ¹ÀçÀÇ »óÅ¿¡ µû¶ó ´Ù¼Ò ´Ù¸¦ ¼ö ÀÖÀ¸³ª 0.7~0.8 Á¤µµÀÇ °ªÀ» Àû¿ë½ÃŰ¸é µÉ °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. 6. ½ÇÁ¦ ±ÇÃë½Ä â°³Æó¸¦ »ç¿ëÇÏ´Â ¿Â½Ç¿¡¼ ±ÇÃëÃà ÆÄÀÌÇÁÀÇ Çã¿ë º¯ÇüÁ¤µµ¸¦ ÃÖ´ë 40cm ÀÌÇÏ·Î ÇÏ´Â °ÍÀÌ Å¸´çÇÒ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç, À̶§ÀÇ ¿¹»ó¼Ò¿äÅäÅ©´Â 110m ¿Â½ÇÀÎ °æ¿ì 25.4mm ÆÄÀÌÇÁ¸¦ ÃàÆÄÀÌÇÁ·Î »ç¿ëÇÑ °æ¿ì 344kg.cmÀ̸ç, 22.2mm ÆÄÀÌÇÁÀÇ °æ¿ì 287kg.cm Á¤µµÀ̹ǷΠ»õ·Ó°Ô °³¹ßµÈ Â÷µ¿¸µ±â¾î À¯¼ºÄ¡ Â÷°¨¼Ó±âµµ Àû´çÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| Most of the greenhouses employ the roll-up type ventilation control system. Torque required to roll-up and down might be theoretically expressed with the weight times radius of the ventilation roll; however, measured torques were two times of the theoretically estimated values. As the window film of roll-up vent is used over the periods of time, the warping and crumpling of the material caused the increase of the torque in addition to a span deformation. Therefore, this study was performed to develop an empirical torque formulae to present basic torque data and to assist the development of roll-up type ventilation control system. The empirically adjusted rolling radius (r£«a) exponentially increased at the maximum span deformation. The coefficient of rolling resistance (Cr) was about 0.7¡ª0.8 depending upon the wrinkle status of film material. |
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| Ű¿öµå |
| ÆÄÀÌÇÁ ºñ´Ò¿Â½Ç;õâ;̢̿;±ÇÃë½Ä â°³Æó±â;ÅäÅ©;pipe-constructed plastic-film greenhouse;ceiling vent;side vent;roll-up ventilator;torque; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.6, no.3, 1997³â, pp.133-142
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711922405336)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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