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  squared differential ÀÌ ¹«¾ùÀΰ¡¿ä?
  ±Û¾´ÀÌ : ±èÅÂÇü   °íÀ¯ID : ±èÅÂÇü     ³¯Â¥ : 39-03-05 00:00     Á¶È¸ : 6543    
squared differentialÀ» ÀÌ¿ëÇÏ¿©
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¾Æ½Ã´Â ºÐ²²¼­ ¼³¸íÀ» Á» ÇØÁֽʽÿÀ.

Stefa Stefa   39-08-02 00:00
È­°øºÐ¾ß¿¡¼­´Â »ç¿ëµÇÁö ¾Ê´Â ¿ë¾îÀä
ÇÔ¼ö y=f(x1,x2,...)¿¡¼­ (dy)^2À» ±¸Ç϶ó´Â ¹®Á¦ÀÎ °ÍÀ¸·Î º¾´Ï´Ù¸¸  ±¸Ã¼ÀûÀ¸·Î ¾î´À ºÐ¾ßÀÇ ¹®Á¦ÀԴϱî?
±èÅÂÇü ±èÅÂÇü   39-08-02 00:00
¼®À¯È­Çпë¾îÀä..¹Ì±¹¿¡¼­ ¹ÞÀº ¸ÞÀϳ»¿ë...¾Æ·¡ÂüÁ¶¿ä

For a reference, we can develop a ratio increase to flow rate if we take the squared differential from the original design allowable pressure drop versus original actual (~1.11% increase).  We can compare it to the new flow rate by the calculated squared differential from the new design pressure drop versus the design allowable (1.09% less).
Stefano Stefano   39-08-02 00:00
(0) ¿ø¹®°ú Çؼ®
For a reference, we can develop a ratio increase to flow
rate if we take the squared differential from the
original design allowable pressure drop versus original
actual (~1.11% increase).  We can compare it to the new
flow rate by the calculated squared differential from
the new design pressure drop versus the design allowable
(1.09% less).

¿¹¸¦ µé¸é, ¾î´À ºñÀ²Áõ°¡(°ª)À¸·ÎºÎÅÍ À¯·®À» ±¸ÇÏ·Á°í ÇÒ ¶§ "¿ø·¡ÀÇ ¼³°èÇã¿ë ¾Ð·ÂÂ÷"¿Í "½ÇÁ¦ÀÇ Çã¿ë¾Ð·ÂÂ÷"µé·ÎºÎÅÍÀÇ "Squared Differential"À» °è»êÇÏ¸é µÈ´Ù.  À̸¦ »õ(º¯°æÈÄ) ¼³°è¾Ð·ÂÂ÷¿Í (¿ø·¡ÀÇ) ¼³°èÇã¿ë¾Ð·ÂÂ÷·ÎºÎÅÍ ¾òÀº "Squared Differential"·ÎºÎÅÍ ±¸ÇÑ »õ À¯·®°ªÀ¸·Î ȯ»êÇÒ ¼ö ÀÖ´Ù.
-------------------------------------------------------

(1) Ãʱâ Çã¿ë¾Ð·ÂÂ÷¸¦ ±âÁØÀ¸·Î ÇÑ À¯·®¿¡ ´ëÇÑ º¯°æµÈ Çã¿ë¾Ð·ÂÂ÷¸¦ ±âÁØÀ¸·Î ÇÑ À¯·®°úÀÇ ºñ´Â ¾Ð·ÂÂ÷¿¡ ºñ·ÊÇÏ´Â °ÍÀÌ ¾Æ´Ï¶ó ¾Ð·ÂÂ÷ÀÇ Á¦°ö¿¡ ºñ·ÊÇÑ´Ù´Â °ÍÀ» ¾ÆÁÖ (µÉ ¼ö ÀÖ´Â ÇÑ) ¾î·Æ°Ô ¼³¸íÇÏ°í ÀÖ´Â °Í °°½À´Ï´Ù.

±Û¿¡¼­ ¼³¸íµÇÁö ¾ÊÀº ¼ö½Ä:
(Flow) = (Constant)*(Press Difference)^(1/2)
Q = C * (¥ÄP)^1/2 .............(1)


(2) Pressure Difference(Pressure Drop)ÀÇ ºñ
r = ¥ÄP2/¥ÄP1...................(2)

¥ÄP1: Original Pressure Drop
¥ÄP2: New Pressure Drop

½Ä (1)·ÎºÎÅÍ, ¾Ð·ÂÀÇ ºñ= À¯·®ºñ^2
(¥ÄP2/¥ÄP1)=(Q2/Q1)^2 = r^2......(3)

Q1: Original Flow Rate
Q2: New Flow Rate

Q1 = C*(¥ÄP1)^1/2,  Q2 = C*(¥ÄP2)^1/2;
Q2/Q1 = {C(¥ÄP2)^1/2}/{C*(¥ÄP1)^1/2} = (¥ÄP2/¥ÄP1)^1/2 = ¡îr

µû¶ó¼­  Q2 = Q1 * ¡îr...........(4)

½Ä(4)´Â ¾Ð·ÂÂ÷ÀÇ ºñ-->À¯·® Á¦°öÀǺñ-->À¯·®ÀÇ ºñ¸¦ ±¸ÇÏ´Â ½ÄÀÔ´Ï´Ù.

(3) ÀÌ·± Àǹ̰¡ ¾Æ´Ï¶ó¸é ¿øºÐÀÇ ¾ÕºÎºÐÀ» ÀοëÇؼ­ ¿Ã·ÁÁÖ¼¼¿ä.
   

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