Cold inlet temp. C Cold outlet temp. C Cp J/kgC Flow rate Latent heat J/kg

200 237.5 4270.536 10.27804336 1776800

5% heat loss considered

Hot fluid inlet C Hot fluid outlet C Flow rate kg/sec Cp J/kg C Heat load watt

885 343 13.2411 2912.686238 20903406

LMTD U w/m2 C A m2 Tube K ID m OD m Lm No. of tubes Pitch m Bend radius m Bundle dia m Q, Heat flux HNB W/m2 C H j/m2 C

298.7200495 120 assumed 583.1381264 55 0.025 0.03 4.8 1289.672077 1290 round off 0.045 square pitch 0.045 2.612859665 35837.29365 32 0.149007 11142.95363 111.8429335

Mu pa.s Re Pr Nu K watt/m K

3.48E-05 3.76E+03 0.487 13.4362 0.2081 qc

Fouling coefficiend OD Fouling coefficiend ID

5000 5000

Calculated U

0.011309 88.42672

374017.6391 261812.3 Surface tension 0.033 row L 841.3718 row V 16.056

New area number of tubes Bundle dia m new heat flux

791.351 1750.157 3.040045 26387.05

1752 actual