¿¹Àü¿¡ NPSH¸¦ Á¦´ë·Î ÀÌÇØÇÏÁö ¸øÇÏ°í ³Ñ¾î°¡¼ ´Ù½Ã ±³Àç¿Í ÀÎÅÍ³Ý ÀڷḦ º¸¸é¼ °øºÎ ÁßÀÔ´Ï´Ù.
Á¦°¡ ÀÌÇØÇÑ °ÍÀÌ ¸Â´ÂÁö Àß ¸ô¶ó¼ Áú¹® µå¸³´Ï´Ù.
Pumps do not suck!
The pump simply moves fluid from the immediate inlet pipework and discharges this fluid against the outlet pressure in the discharge system.
Pump´Â ÈíÀÔÇÏ´Â ÀåÄ¡°¡ ¾Æ´Ï¶ó inlet¿¡¼ outletÀ¸·Î À̼ÛÇÏ´Â ÀåÄ¡ÀÌ°í inletÀ¸·Î ¾×ü°¡ ÈíÀԵDZâ À§Çؼ´Â,
À¯Ã¼´Â High pressure¿¡¼ Low pressure·Î È帣¹Ç·Î ±×·¯ÇÑ conditionÀ» ¸¸µé¾î Áà¾ß Çϴµ¥ ±×¶§ ÇÊ¿äÇÑ °³³äÀÌ NPSHÀΰ¡¿ä??
NPSHa = Fluid surface pressure + Positive head (or - negative head) - Pipework friction - Fluid vapor pressure
ÀÏ´Ü High pressure¿¡¼ Low pressure·Î È帣±â À§Çؼ´Â À§¿¡ ¼ö½Ä¿¡¼ NPSHa > 0 À̱⸸ ÇÏ¸é µÇ´Âµ¥
¹º°¡ Á¦°¡ ¸ð¸£´Â °³³äÀÌ Ãß°¡·Î µé¾î°¡¼ 0º¸´Ù Ä¿¾ß ÇÏ´Â °ÍÀÌ ¾Æ´Ï¶ó, Àû¾îµµ NPSHr º¸´Ù Ä¿¾ß ÇÑ´Ù´Â °Ç°¡¿ä?
NPSHrÀº ½ÇÇèÀ» ÅëÇؼ °áÁ¤ÇÑ´Ù°íµµ ÇÏ´øµ¥¿ä.
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