Pump (Diaphgram type- air driven) ÀÇ Suction lift head ¹× NPSH ¿¡ °üÇÑ Áú¹®ÀÔ´Ï´Ù.
1. Suction lift head ¹®Á¦:
- Pump vendor ÁÖÀå: Water pumping ±âÁØÀÇ ÃÖ´ë pump suction lift head °¡ 8.6m ¶ó°í ÇÕ´Ï´Ù (Wet suction priming ±âÁØ°ª).
- Client(¿£Áö´Ï¾î¸µ»ç)ÀÇ ÁÖÀå: ½ÇÁ¦ pumping fluid ´Â condensate oil (density: 764 kg/m3) À̹ǷÎ, suction lift head ´Â ¾à 11m ÀÌ»ó µÉ °ÍÀ̶ó´Â ÁÖÀåÀÔ´Ï´Ù.
- À̷лó: 8.6m x 1000 kg/m3 / 764 kg/m3 = 11.2 m
Áú¹®: Performance guarantee ¸¦ ÀǽÄÇؼ ÀÎÁö, pump vendor ÃøÀº, condensate oil pumping ±âÁØÀÇ suction lift head °ªÀ» 11m ÀÌ»óÀÌ µÈ´Ù°í confirm ÇØ ÁÙ¼ö ¾ø´Ù°í ÇÕ´Ï´Ù. ÀÌ·ÐÀûÀ¸·Î´Â ¿£Áö´Ï¾î¸µ»çÀÇ ÁÖÀåÀÌ ¸ÂÁö ¾Ê½À´Ï±î?
2. NPSH ¹®Á¦:
- NPSHa: 1.4 m vs. NPSHr: 2.3 m
- Çö»óȲ: System ÀÇ ¹°¸®ÀûÀÎ Á¶°ÇÀº max. optimization ¿Ï·áµÊ (pump elevation, pipe size µî). Submergible type À¸·Î ¹Ù²Ù±â¿£ Suction Caisson ÀÇ Dia °¡ ³Ê¹« ÀÛÀ½. pump elevation ¹Ù²Ù±â¿£ ÇØ¾ç ±¸Á¶¹°ÀÇ ´ë´ëÀûÀÎ º¯°æÇÊ¿ä (80% PDMS modeling ¿Ï·á ½ÃÁ¡ÀÓ- º¯°æ½Ã ¾öû³ cost impact)
Áú¹®: Suction lift (Áú¹®1) ÀÌ ÇØ°áµÇ¾ú´Ù°í Çصµ, NPSH ¹®Á¦´Â ÇØ°á ¹æ¾ÈÀÌ ¾ø½À´Ï´Ù. Ȥ½Ã Àü¹®°¡(½ºÅ×Æijë´Ô)ÀÇ °æÇè¿¡¼ ¾òÀº¸¸ÇÑ Á¶¾ðÀÌ ¾øÀ»·±Áö¿ä. ÇØ¿Ü ¿£Áö´Ï¾î¸µ ÄÁ¼³ÅÏÆ®´Â vapour pressure(condensate oil=0.2048 bar from HYSYS) ÀÇ °ªÀ» 0 À¸·Î ¸ÂÃç ¹ö¸®°í, NPSHa ¸¦ °è»êÇ϶ó°í Çϴµ¥, Á¤È®ÇÑ ±Ù°Åµµ ¾ø°í »ó½ÄÀûÀÎ Á¢±ÙÀÌ ¾Æ´Ñ°Í °°¾Æ ¹«½ÃÇÏ¿´½À´Ï´Ù.