Question

The disadvantage of multipass heater is?
A friction losses are high
B
heat transfer rate is low
Steam cannot be used
© C
Velocity of the fluid flowing is low​

Answer 1

Answer:

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Explanation:

Answer 2

Answer: B. heat transfer rate is low

Steam cannot be used

Explanation:

The bend makes it challenging to clean fouled tubes; total disassembly can give access to the exterior of the tube, but cleaning the inside surface is still challenging. There are some possibilities for enhancing heat transfer efficiency within certain parameters, including building material and velocity.

Leakage. Plate heat exchangers are made to have space for inserting plates and gaskets in between them. As gaskets get older, this raises the risk of leaking. especially in comparison to spiral or shell and tube heat exchangers.

Lower pressure increases Plate heat exchangers have a high heat transfer rate because they have small fluid flow channels. As a result, the pressure loss is greater and the cost of pumping is more than with shell and tube heat exchangers.

With extremely high fluid temperatures, it performs poorly. Plate heat exchanger gaskets can impose temperature restrictions.

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