Compressor circuit ¿¡¼, suction drumÀÇ ¾Ð·ÂÀ» ÀÏÁ¤ÇÏ°Ô À¯Áö½ÃÅ°±â À§ÇØ ¾²´Â ÇÑ °¡Áö ¹æ¹ýÀÌ discharge spill back valve °¡ ÀÖ´Â °ÍÀ¸·Î ¾Ë°í ÀÖ½À´Ï´Ù. ¿©±â¿¡ ´ëÇÑ control ¹æ½ÄÀº Á¦°¡ ÀÌÇØÇϱâ·Î ¾Æ·¡¿Í °°½À´Ï´Ù.
¿¹¸¦ µé¾î, Molecular weight °¡ Áõ°¡ -> compressor delta P (=·Î¿ìxgxh) Áõ°¡ -> (if discharge back pressure is constant), suction pressure of drum °¨¼Ò -> spill back valve open (= discharge flow go back to the compressor suction side) -> compressor·Î µé¾î°¡´Â flow Áõ°¡ -> compressor delta P (=·Î¿ìxgxh) °¨¼Ò -> suction pressure of drum Áõ°¡
°á±¹ ÀÌ °æ¿ì Compressor suction drumÀÇ ¾Ð·ÂÀ» ÀÏÁ¤ÇÏ°Ô À¯Áö½ÃÅ°±â À§ÇØ, Moleculare weight°¡ Áõ°¡µÇ¸é, spill back valve¸¦ ¿°Ô µË´Ï´Ù.
±×·±µ¥, anti-surge controlÀÇ °æ¿ì,
¿¹¸¦ µé¾î, Molecular weight °¡ °¨¼Ò -> compressor delta P (=·Î¿ìxgxh) °¨¼Ò -> (if. discharge back pressure : constant), suction pressure of drum Áõ°¡ -> compressor·Î µé¾î°¡´Â flow °¨¼Ò -> surge point·Î Á¢±Ù. -> anti-surge valve open -> compressor·Î µé¾î°¡´Â flow Áõ°¡ -> compressor delta P (preformance curve¿¡ µû¶ó) °¨¼Ò -> suction pressure of drum ¶Ç Áõ°¡?
°á±¹ ÀÌ °æ¿ì´Â suge¸¦ ¹æÁöÇϱâ À§ÇØ, Molecular weight °¡ °¨¼ÒÇϸé anti surge valve¸¦ open ÇÏ°Ô µË´Ï´Ù.
ÀÌ¿Í °ü·ÃÇÏ¿© ¾Æ·¡¿¡ µÎ°¡Áö Áú¹® »çÇ×À» Á¤¸®ÇÏ¿´½À´Ï´Ù.
1. °á±¹ Suction DrumÀÇ ¾Ð·ÂÀ» ÀÏÁ¤ÇÏ°Ô À¯Áö½ÃÅ°±â À§ÇÑ, spill back valve´Â Molecular weight °¡ Áõ°¡Çϸé open!
Anti-sugeÀ» À§ÇÑ anti sugre vavle´Â Molecular weight °¡ °¨¼Ò½Ã open! Á¦°¡ ÀÌÇØ ÇÑ °ÍÀÌ ¸Â´Â °ÍÀΰ¡¿ä?
2. Anti-surge controlÀÇ °æ¿ì, Molecular weight °¡ °¨¼Ò·Î anti sugre valve°¡ openÇϸé, suction pressure of drum ¶Ç Áõ°¡ÇÏ°Ô µÇ´Â°Å ¾Æ´Ñ°¡¿ä? À§¿¡¼ ¼³¸í µå¸° °Í¿¡ µû¶ó.