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Çѱ¹¼öÀÚ¿øÇÐȸ / v.28, no.5, 1995³â, pp.141-150
°ø±â½ÇÀ» »ç¿ëÇÑ ¾Ð·Â¼öµÎÀÇ ¿ÏÈ­È¿°ú¿¡ ´ëÇÑ ºÐ¼®
( An Analysis of Attenuation Effect of Pressure Head Using an Air Chamber )
ÀÌÀç¼ö;À±¿ë³²;±èÁßÈÆ; °í·Á´ëÇб³¹æÀç°úÇбâ¼ú¿¬±¸¼¾ÅÍ;°í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú, °í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;;
 
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°ø±â½Ç(air chamber)Àº °ü¸Á¿¡ ÀÖ¾î ¾Ð·Â¼öµÎ°¡ ¼³°èÄ¡¸¦ ÃʰúÇÏÁö ¾Ê°í ¶ÇÇÑ ÃÖÀú ¾Ð·Â¼öµÎ°¡ ¹ß»ýÇÏÁö ¾Êµµ·Ï Çϱâ À§ÇØ ¼³°èµÈ´Ù. µû¶ó¼­ °ø±â½ÇÀº °©ÀÛ½º·± ÆßÇÁÀÇ Áß´Ü¿¡ µû¸£´Â ¼ø°£ÀûÀÎ ÃÖ°í ¹× ÃÖÀú ¾Ð·Â¼öµÎÀÇ ¹ß»ýÀ» ¹æÁöÇϱâ À§ÇØ »ç¿ëµÇ¾î Áø´Ù. º» ¿¬±¸¿¡¼­´Â °¡»óÀûÀÎ °ü¸Á¿¡ °ø±â½ÇÀ» Àû¿ëÇÏ¿© °ø±â½ÇÀÇ °ø±âºÎÇÇ, À§Ä¡, ¸éÀû, ¿À¸®Çǽº¿¡¼­ÀÇ ¼Õ½Ç°è¼ö ±×¸®°í polytropicÁö¼öÀÇ º¯È­¿¡ µû¸¥ ¾Ð·Â¼öµÎÀÇ ¿ÏÈ­È¿°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú °ø±âÀÇ ºÎÇǰ¡ Áõ°¡ÇÒ¼ö·Ï ÃÖ°í¾Ð·Â¼öµÎ´Â °¨¼ÒÇϰí ÃÖÀú ¾Ð·Â¼öµÎ´Â Áõ°¡ÇÔÀ» º¸¿©ÁÖ¾úÀ¸¸ç, °ø±â½ÇÀÇ À§Ä¡³ª ´Ü¸éÀûÀÇ º¯È­´Â ¿ÏÈ­È¿°úÀÇ º¯È­°¡ º°·Î ¾ø¾ú´Ù. ¶ÇÇÑ ¿À¸®Çǽº ¼Õ½Ç°è¼ö¸¦ Áõ°¡ÇÒ¼ö·Ï ÃÖ°í ¾Ð·Â¼öµÎ°¡ °¨¼ÒÇÔÀ» º¸À̰í, °ø±â½ÇÀÇ °ø±â°¡ µî¿Âº¯È­°úÁ¤À» µû¸¦¶§°¡ ´Ü¿­º¯È­°úÁ¤À» µû¸¦ ¶§º¸´Ù ÃÖ°í ¾Ð·Â¼öµÎ°¡ ³·À½À» º¸¿©ÁÖ¾ú´Ù.
An air chamber is designed to keep the pressure from exceeding a predetermined value, or to prevent low pressures and column separation. Therefore, it can be used to protect against rapid transients in a pipe system following abrupt pump stoppage. In this research, an air chamber was applied to a hypothetical pipe system to analyze attenuation effect of pressure head for different air volumes, locations, chamber areas, coefficients of orifice loss and polytropic exponents. With an increase of air volume, the maximum pressure head at pump site is decreased and the minimum pressure head is increased. For different locations and areas of the chamber, the attenuation effects do not show much difference. Also, as the orifice loss coefficient increases, the maximum pressure head is decreased. For different polytropic exponents, isothermal process shows lower maximum pressure head than that of the adiabatic process.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.28, no.5, 1995³â, pp.141-150
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511920096230)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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