ÀÚµ¿·Î±×ÀÎ
ÄÁÅÙÃ÷ | contents
ÀϹݰԽÃÆÇ
Q&A°Ô½ÃÆÇ
°øÇÐ S/W
½ºÅ͵ð | study
´ÜÀ§È¯»ê
³óµµ°è»ê
ÀϹÝÈ­ÇÐ
È­°øÀϹÝ
È­°ø½Ç¹«

   
  PUMP ÅäÃâÃø ¾Ð·Â°ú NPSH¿ÍÀÇ °ü°è
  ±Û¾´ÀÌ : °Ô½´Å»Æ®   °íÀ¯ID : oldparao     ³¯Â¥ : 13-10-14 17:24     Á¶È¸ : 7298    
¾È³çÇϽʴϱî?
 
CAVITATIONÀ» ¸·±âÀ§ÇØ ³Ë³ËÇÑ NPSHa°ªÀ» È®º¸ÇØ¾ß µÇ´Â °Í¿¡ ´ëÇØ Áú¹®»çÇ×ÀÌ ÀÖ½À´Ï´Ù.
¼®¼Ç¶óÀÎÀÇ storage tankÀÇ elevationÀ» ÃæºÐÈ÷ ³ô°ÔÇÏ¿© À§Ä¡¼öµÎ (Hs)¸¦ È®º¸ÇÏ°í,
20%ÀÌ»óÀÇ ¸¶ÁøÀ» ÁÖ¾î NPSHa°ªÀ» Á¤ÇÏ¿´½À´Ï´Ù.
 
TDH (total dynamic head,Àü¾çÁ¤) Àº suction line head + discharge line head·Î ¾Ë°í Àִµ¥
Á¦ »ý°¢À¸·Î´Â cavitation¸¸ ¹ß»ýÇÏÁö ¾Êµµ·Ï NPSHa°ªÀ» ±¸ÇÞ´Ù°í Çؼ­
discharge line head°¡ ±Øº¹µÇ¾î ¿øÇÏ´Â Àå¼Ò±îÁö À¯Ã¼¸¦ À̼۽ÃÅ°Áö ¸øÇÒ °Í °°´Ù´Â »ý°¢ÀÌ µé¾ú½À´Ï´Ù.
 
¼®¼Ç°ú µð½ºÂ÷ÁöÀÇ head loss¸¦ ±¸ÇØ »« differential head¸¦ ±Øº¹ÇÏ´Â°Ô ÆßÇÁÀÇ ¼±Á¤¿äÀÎÀ̶ó°í »ý°¢µå´Âµ¥
npsh¿Í µð½ºÂ÷Áö ¾Ð·Â°úÀÇ °ü°è°¡ °ü·ÃÀÌ Àִ°ÍÀÎÁö¿ä?
 
µð½ºÃ­ÁöÀÇ ¾Ð·ÂÀ» ¾î¶»°Ô ±¸ÇØ¾ß ¿Ã¹Ù¸¥ ÆßÇÁ¸¦ ¼±Á¤ÇÒ ¼ö ÀÖÀ»±î¿ä?

½ºÅ×Æijë Stefano   13-10-14 21:40
<TDH (total dynamic head,Àü¾çÁ¤) Àº suction line head + discharge line head·Î ¾Ë°í Àִµ¥...> À̺κÐÀ» ¼³¸íÇØ ÁÖ¼¼¿ä.
     
°Ô½´Å»Æ® oldparao   13-10-15 09:57
Àü¾çÁ¤Àº ¼®¼ÇÇÊ¿ä¾Ð·Â+ÅäÃâÇÊ¿ä¾Ð·Â+¸¶Âû¼Õ½Ç+±â°èÀúÇ× µîÀ¸·Î ÀÌ·ç¾îÁ® ÀÖ½À´Ï´Ù.

ÆßÇÁ¼±Á¤ÇÒ ½Ã NPSHa°ªÀ» Á¦´ë·Î È®º¸ÇÑ´Ù¸é À¯Ã¼¸¦ ¿øÇÏ´Â °÷±îÁö À̼ÛÇϴµ¥
¹®Á¦°¡ ¾ø´ÂÁö ±Ã±ÝÇÕ´Ï´Ù..
¿£Áö´Ï¾î¸°¡¦ porty   13-10-15 09:59
TDH = Suction Line Head + Dischrage Line Head°¡ Ʋ¸°°Í °°³×¿ä, ´Ù½Ã Çѹø È®ÀÎÇØ º¸¼¼¿ä.

<¼®¼Ç°ú µð½ºÂ÷ÁöÀÇ head loss¸¦ ±¸ÇØ »« differential head¸¦ ±Øº¹ÇÏ´Â°Ô ÆßÇÁÀÇ ¼±Á¤¿äÀÎÀ̶ó°í »ý°¢µå´Âµ¥
npsh¿Í µð½ºÂ÷Áö ¾Ð·Â°úÀÇ °ü°è°¡ °ü·ÃÀÌ Àִ°ÍÀÎÁö¿ä?> -> ¸Â´Â ¸»¾¸ À̽ó׿ä.

¸¸¾à¿¡ ÅÊÅ© ¼öÀ§°¡ ³ô¾ÆÁ®¼­ °è»êµÈ ±×³É NPSH°ªÀÌ Ä¿Áö¸é ÆßÇÁ Discharge ¾Ð·Âµµ ½Ã½ºÅÛÀúÇ×°î¼±°ú ÆßÇÁ¼º´É°î¼±ÀÇ ±³Á¡À» µû¶ó Ä¿Áö±ä Çϰڳ׿ä.
     
°Ô½´Å»Æ® oldparao   13-10-15 13:35
±×·¡¼­ ¼®¼ÇÂÊÀÇ npsh¸¦ ±¸Çϸé differential head°¡ ±Øº¹ÀÌ µÇ´Â°Í ÀÎÁö¿ä?
AQUA killsmany   13-10-15 17:00
NPHS´Â ÆßÇÁ¼±Á¤½Ã ÆßÇÁ°¡ ¿øÈ°ÇÏ°Ô À¯Ã¼¸¦ ÈíÀÔ?ÇÒ¼ö ÀÖ´À°¡¸¦ ÆÇ´ÜÇϴµ¥ ÇÊ¿äÇÑ °ªÀ¸·Î ¾Ë°í Àִµ¥
¾Æ´Ñ°¡¿ä?? ÅäÃúÃø ¾Ð·Â°ú´Â »ó°üÀÌ ¾ø´Â°Å ¾Æ´ÑÁö¿ä?
     
°Ô½´Å»Æ® oldparao   13-10-15 17:08
±×·¯¸é ÆßÇÁ¼±Á¤¿¡ À־,,, NPSHa°ªÀÌ ¿©À¯ÀÖ´Â ÆßÇÁ¸¦ ¼±Á¤Çߴµ¥ ÈíÀÔÀº ÀßÇÏÁö¸¸
ÅäÃâÃø ¾Ð·Â¼Õ½ÇÀÌ Ä¿¼­ ¿øÇÏ´Â °÷±îÁö À¯Ã¼¸¦ À̼۽ÃÅ°Áö ¸øÇÑ´Ù¸é ¸»Â¯²ÎÀ̱º¿ä.

ÅäÃâÃø ¾Ð·Â¼Õ½ÇÀ» °è»êÇس»°í ÅäÃâ°ú °ü·ÃµÈ ÆßÇÁÀÇ ½ºÆå¿¡´Â ¹¹°¡ ÀÖÀ»±î¿ä?
AQUA killsmany   13-10-15 17:23
ÅäÃâÃø¿¡ °ü·ÃµÈ ¹è°ü¿¡ ´ëÇؼ­ hydraulic °è»êÀ» ¼öÇàÇϽŵڿ¡ ÃÖ´ë ¾Ð·Â¼Õ½Ç ÀÌ»óÀÇ ÅäÃâ¾ÐÀ» ÆßÇÁ°¡ °¡Áø´Ù¸é ¿øÇÏ´Â ÁöÁ¡±îÁö À¯Ã¼¸¦ À̼۽Ãų ¼ö ÀÖ°ÚÁö¿ä
     
°Ô½´Å»Æ® oldparao   13-10-28 15:32
°¨»çÇÕ´Ï´Ù^^
   

Copyright 1999.07.10-Now ChemEng.co.kr & 3D System Engineering. (mail : ykjang@naver.com, call 010-4456-8090)