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  C/V Ư¼º ¹®Àǵ帳´Ï´Ù
  ±Û¾´ÀÌ : ¿öÅ·´ï   °íÀ¯ID : yalrang     ³¯Â¥ : 21-01-15 16:30     Á¶È¸ : 2595    
Ä÷³ Bottom Pump ÈÄ´Ü¿¡ À§Ä¡ÇÑ C/V(ÄÁÆ®·Ñ ¹ëºê)¸¦ ±âÁ¸ Á¶¾÷½Ã By-pass ÇÒ¶§°¡ ÀÖ¾î
ÇØ´ç C/V¸¦ Size-upÇÏ¿© ½Å±Ô ±³Ã¼¸¦ °ËÅäÁßÀÔ´Ï´Ù.
C/V¸¦ Áö³ª¼­´Â Tank·Î À̼۵Ǿî Á¦Ç°À¸·Î ÀúÀåµË´Ï´Ù.
Z°ªÀº 0.3 ¼öÁØÀ¸·Î EQ Ư¼ºÀ̳ª Level Á¶Àý¿ëÀ¸·Î´Â Linear¸¦ »ç¿ëÇÑ´Ù°í È®ÀÎÇÏ¿´½À´Ï´Ù.
ÇöÀç »ç¿ëÁßÀÎ ±âÁ¸ C/VÀº Linear Ư¼ºÀ¸·Î µÇ¾îÀÖ½À´Ï´Ù.
ÀÌ·² °æ¿ì EQ¿Í Linear Áß ¾î¶² Ư¼ºÀ¸·Î Datasheet¸¦ ÀÛ¼º½Ã °í·ÁÇؾßÇÒÁö Á¶¾ðºÎŹµå¸³´Ï´Ù.
Normal Flow 1.0 m3/hr À̶ó¸é Max ´Â ¾à 2.7 ¼öÁØ, Min Àº 0.3 ¼öÁØÀÔ´Ï´Ù.
°¨»çÇÕ´Ï´Ù.



·ÎÁø bless20   21-01-18 09:34
¾È³çÇϼ¼¿ä? Z°ªÀº compressibility factor¸¦ ¸»¾¸ÇϽôÂÁö¿ä?
¸¸¾à ±×·¸´Ù¸é, Column btmÀÇ C/V¿¡¼­ Z factor¸¦ Àû¿ëÇÏ´Â ÀÌÀ¯°¡ ¾øÀ» °Í°°½À´Ï´Ù.
Z factor´Â ½ÇÁ¦ ±âüÀÇ ¿Âµµ/¾Ð·Â Á¶°Ç¿¡¼­ÀÇ ¹Ðµµ¸¦ Ãß»êÇϱâ À§Çؼ­ »ç¿ëÇϱ⠶§¹®ÀÔ´Ï´Ù.
BTM¿¡¼­ Saturated liquid°¡ ¹èÃâµÇ´õ¶óµµ Valve Àü´Ü¿¡¼­ Liquid phase·Î ¹èÃâµÇ´Â °ÍÀ̱⠶§¹®¿¡ Àû¿ëÇÏ½Ç ÇÊ¿ä°¡ ¾ø¾îº¸ÀÔ´Ï´Ù.
¸¸¾à ´Ù¸¥ ÀÎÀÚ¶ó¸é ´ä±Û·Î ´Þ¾ÆÁÖ¼¼¿ä^^ °°ÀÌ ¹è¿ö³ª°¡¸é ÁÁ°Ú½À´Ï´Ù.
Á¤»óÀûÀÎ Column ¿îÀü»ó¿¡¼­´Â Linear Ư¼ºÀ¸·Î Àû¿ëÇÏ½Ã¸é µÉµíÇÕ´Ï´Ù.
Çϱâ¿Í °°ÀÌ °¢ Valve Opening Ư¼º¿¡ ´ëÇÑ Guide¸¦ °øÀ¯ÇÕ´Ï´Ù.
1. Linear
 - Used in liquid level or flow loops
 - Used in systems where the pressure drop across the valve is expected to remain fairly constant (i.e. steady state systems).
 - Used when the pressure drop across the valve is a large proportion of the total pressure drop
2. Eq%
 - Used in processes where large changes in pressure drop are expected.
 - Used in processes where a small percentage of the total pressure drop is permitted by the valve
 - Used in temperature and pressure control loops
3. Quick opening
 - Used for frequent on-off service
 - Used for processes where "instantly" large flow is needed (i.e. safety systems or cooling water systems)
     
¿öÅ·´ï yalrang   21-01-18 10:42
Á¦°¡ ¸í±âÇÑ Z°ªÀº ºÐ¸ð system ÃÑ del P(C/V ÀüÈÄ´Ü del P ÇÕ°è + C/V del P) , ºÐÀÚ C/V del P °ªÀ» ÁöĪÇÏ´Â °ÍÀ¸·Î ¼³¸íÇØÁֽŠZ°ª°ú´Â ´Ù¸¥ ÀǹÌÀÎ °Í °°½À´Ï´Ù. Column BTM ¿¡¼­ Z°ªÀ» ±âÁØÀ¸·Î º¸¸é Àüü del P¿¡¼­ C/VÀÇ del P ºñÀ²ÀÌ 0.3À̶ó EQ Ư¼ºÀε¥, Column BTM Level Á¶Àý¿ëÀ¸·Î´Â Linear¸¦ ¾²´Â°Ô ¸Â´Â°ÇÁö ¹®Àǵ帮´Â °ÇÀ¸·Î ´ñ±Û °¨»çµå¸³´Ï´Ù ^^ (°¡À̵å»ó 0.5<Z<1, Linear, Z<0.5 EQ·Î µÇ¾îÀ־...) Z°ªÀº ´õ ³·¾ÆÁú¼öµµ ÀÖÀ» °Í °°Àºµ¥, Linear Ư¼º¿¡¼­ Z°ªÀÌ ³·À»¼ö·Ï Quick Opening¿¡ °¡±î¿î Ư¼ºÀ», EQ¿¡¼­´Â Linear ¿¡ °¡±î¿î Ư¼ºÀ» ³ªÅ¸³½´Ù°í µÇ¾îÀ־ EQ·Î °¡¾ßÇÏ´Â°Ô ¸Â³ª °í¹ÎÀÌ µÇ¾î¼­ ¹®Àǵ帳´Ï´Ù.)
Stefano    21-01-19 04:06
ù Áú¹®¿¡¼­ Z °ªÀº ¾Æ¸¶  Valve Position 0~1À» 10´Ü°è·Î ³ª´©¾î  ³ªÅ¸³½ ¼ýÀÚ 0.3¿¡ ÇØ´çÇÏ´Â Valve ¿­¸²Á¤µµ(°³µµÀ²)·Î º¸ÀÔ´Ï´Ù.  Áï Cv°ªÀÌ ZÀÇ ÇÕ¼ö·Î ºÃÀ» ¶§  LinearÀÇ °æ¿ì  Valve SteamÀÌ 30%¿­¸®¸é  0.3*CvÀÇ À¯·®ÀÌ Èê·¯°¡´Â °ÍÀÌÁö¿ä.
     
¿öÅ·´ï yalrang   21-01-19 10:36
system¿¡¼­ÀÇ ÃÑ del P°¡ 3.0kg/cm2, ÀÌ°í C/VÀÇ del P¸¦ 1kg/cm2 ·Î ¹Ý¿µÇϸé Z°ªÀÌ 1/(1+3)=0.25 ÀÔ´Ï´Ù. C/VÀÇ del P¸¦ Å©°Ô µÎ·Á´Ï Cv°ªÀÌ ÀÛ¾ÆÁ®¼­ flow°¡ Á¦´ë·Î ³ª°¡Áö ¾ÊÀ»±îºÁ 1kg/cm2 ¼öÁØÀ¸·Î º¸´Â ÁßÀÔ´Ï´Ù. ¼³°èµµ¼­ÀÇ Guide¿¡´Â 0.5<Z<1À̸é Linear, Z<0.5¸é EQ Ư¼ºÀ¸·Î µÇ¾îÀִµ¥ ¶Ç Column BTM Pump ÈÄ´Ü C/VÀ̹ǷΠLevel Á¶Àý¿ëÀ̶ó, Level Á¶Àý¿ëÀ¸·Î´Â Linear Ư¼ºÀ» »ç¿ëÇÑ´Ù°í µÇ¾îÀÖ½À´Ï´Ù. Á¦°¡ ¿ì·ÁÇÏ´Â °ÍÀº Size-upÀ» ÇÑ ÀÌÈÄ¿¡µµ C/V¿¡¼­ del P¸¦ °ÅÀÇ ¸ÔÁö ¾Ê´Â »óȲ(Full Open) ¼öÁØÀÌ µÉ °¡´É¼ºÀÌ ÀÖ°í ±×º¸´Ù ÀûÀº À¯·®ÀÌ È帣´Â Á¶¾÷¸ðµåµµ ÀÖ´Â »óȲ¿¡¼­ Linear Ư¼º°ú EQ Ư¼ºÁß ¾î´À°ÍÀÌ ¾ÈÁ¤ÀûÀÏÁö¿¡ ´ëÇÑ ºÎºÐÀÌ °í¹ÎµË´Ï´Ù.
   

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