¡ß ³Ã¡¤¿Â¼ö ÄÚÀϳ»ÀÇ ¾Ð·Â ¼Õ½Ç °è»ê¹ý ¡ß Calibration of pressure
loss in the cooling / hot water coils
³Ã, ¿Â¼ö ÄÚÀÏ »ç¿ë½Ã ¼öÃø¾Ð·Â¼Õ½ÇÀº Æ©ºê 1º»(PASS)´çÀÇ ¼ö·®°ú Æ©ºêÀÇ ±æÀÌ(À¯È¿Àå)À¸·ÎºÎÅÍ ±¸ÇÕ´Ï´Ù. The loss of the
contraction pressure upon use of the cooling/hot water coils can be obtained
from quantity of water in a single tube pass, and length of the tube (Effective
Length). * ³Ã°¢¿·®(Calorific value for cooling) : 38,000(§»/h) * ÄÚÀÏ»ç¾ç(Coil
configuration) : 6ROW x 18passes x 0.95m * ¼ö·®(Water quantity) : 38,000 ¡À (60
x 5) = 126.7(§¤/min) 5 : ³Ã¡¤¿Â¼ö ÀÔÃⱸ ¿ÂµµÂ÷(5:difference in temperature between
the inlet and the outlet of the cooling water/hot water) * Æ©ºê 1º»´ç ¼ö·®(Water
quantity in a single tube pass) : 126.7 ¡À 18 = 7.04(§¤/min) * Æ©ºê ±æÀÌ°¡ 0.95mÀ̹ǷÎ
¾Æ·¡ÀÇ µµÇ¥¿¡¼ ¼ö¾Ð¼Õ½ÇÄ¡-0.15mmAq(Since length of the tube 0.95m, the water pressure loss
in the following diagram is-0.15mmAq) ¼ö¾Ð¼Õ½ÇÄ¡-0.15mmAq ¡Å Àüü ¾Ð·Â¼Õ½Ç(Total
pressure loss) = 0.15 x 6ROW = 0.9(mmAq) |