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Design of Shell and Tube Heat Exchanger Crude oil at 198°C is to be cooled to...
Design of Shell and Tube Heat Exchanger
Crude oil at 198°C is to be cooled to 39°C. The oil flow-rate is
6.127 kg/s. Cooling water
is available at 29°C and at the rate of 27.127 kg/s. The pressure
drop allowance for each stream
is 100 kN/m2
. Design a suitable shell and tube heat exchanger for this
duty.
The following are the properties of the two streams at the average
temperature:
| water | crude oil | |
| density kg/m3 | 990 | 850 |
|
viscosity mNm-2 s |
0.680 | 0.18 |
| thermal conductivity W/m K | 0.630 | 0.130 |
| specific heat kJ/ kg °K | 4.2 | 2.3 |
Data:
Assume overall heat transfer coefficient of 502 W/m2 K.
Tubes: 20 mm o.d., 16 mm i.d. tubes, 4 m long, square pitch 1.25do,
carbon steel.
Pull through head, Floating Head type heat exchanger.
Baffle = 1/5 of the shell diameter and 25 % cut baffles
Fouling factors 0.0003 m2 K/ W for cooling water and 0.0002 m2 K/ W
for crude oil
Thermal conductivity of metal = 57 W/m K
Present your results with detailed calculations to design Shell and Tube Heat Exchanger. Mention the various assumptions made in the calculations.
Estimate the cost of the heat exchanger.
Solutions
Amanda K answered 2 years agoRelated Solutions
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