Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 1 (Q.No. 24)
24.
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s-1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s-1. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is
Discussion:
14 comments Page 1 of 2.
Mongam Damodhar rao said:
1 year ago
Option B is the right answer. Steam condensate has less tendency of fouling than process stream fluid.
So steam condensate must be passed through the shell side.
So steam condensate must be passed through the shell side.
(2)
Sandeep Yadav said:
5 years ago
Two main reasons:
1 - Steam condensate has dissolved CO2 & O2 which causes corrosion and tube side is less costly to get replaced.
2 - If we send hot condensate in the shell side we have to use insulation as it is directly exposed to ambient.
1 - Steam condensate has dissolved CO2 & O2 which causes corrosion and tube side is less costly to get replaced.
2 - If we send hot condensate in the shell side we have to use insulation as it is directly exposed to ambient.
(3)
Nilesh said:
6 years ago
Thanks @Omprakash.
(2)
Ritik said:
7 years ago
You are right, thanks @Omprakash.
Zavin gajera said:
8 years ago
Please explain it.
Enoch said:
8 years ago
Counter flow because aqueous solution outlet temp can be greater than the steam outlet temp and also shell side because the presence of baffles increases the velocity of the aqueous solution, and the higher the velocity, the more heat gained by the aqueous solution.
Emeka Udokwu said:
10 years ago
@Bajwa.
More corrosive fluids are passed through the tubes. Also, the fluid with the greatest fouling tendency is usually passed through the tubes where cleaning is easier.
More corrosive fluids are passed through the tubes. Also, the fluid with the greatest fouling tendency is usually passed through the tubes where cleaning is easier.
Meenakshi yadav said:
1 decade ago
This is condensing steam so it should be on shell side for maximum heat transfer.
Ajit shah said:
1 decade ago
It is easy to clean the tubes then the shell.
Bajwa said:
1 decade ago
The reason is that as process stream is an aqueous solution, (solvent is water) i.e. if use process steam on tube side there are enough chances of clogging, fouling of tubes as water may also contains some soluble solid impurities. So process stream should be on shell side.
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