Question

65 в ееееееееееееее.pdf x + v 7 FA a BX 7 of 14 + O Fit to page IL Page view AV Read aloud Add notes OP A liquid (SG=0.866, u=0.56 cp) flows through the coils of the heat exchanger (E=0.000005 A) shown below at a rate of 5.0 gal/min. Values for L and coil pipe diameter (D) are 48 and 1.0 inches, respectively. Determine the pressure drop (psi) between the inlet and outlet of the heat exchanger. Note that the loss coefficient (KL) for a threaded return bend is 1.5. L Threaded 180° return bend Coil Diameter, D Type here to search Ö . a 10:17 AM 7/31/2020

Answer 1

Given -; Den fity (el 866 kg/m3 viswo siły lus 5.6 x104 kg/m.s flow rote (0) = 5 901 min = 3.15x109 m/sec diameter (dl) I inco 010254m Lenth (L) = 48" 1.22 m NOW, Area (Al = 17 / 2 (192) 3.14 (0.0254)? ។ A = 5.064 x1ö9 m2 V- = 0.621 min A Re = Reynola's No. pau (866 kg/m3) (0.0254m) (0.62 MB) 5.6 x 104 kg/m-s Re= 24392 CSScanned with CamScanner

NOW, 2 0.000005 3+ E = 1.524 1.524 xiom alo = 1.524 x10 m 0.0254 dlo 6.0 rios From Moody Chart; Friction factor (fl = 0.006 NOW, Frictional head 10 NA (17) h = 29 * [974 + 7.KL L - PXL = 8 x 1.220 Ľ 9.76m So, hi (0.62112T 4 (0.006)(9.16) 249.84 0.0254 + 1x1.5 15] hz 0.387 m og hq pressure drop fap) = = 66K9/2) (9.44 M182) (0.3870) 329 3.2 pa AP = CSScanned with CamScanner