How can we increase the efficiency of heat exchanger?

Conventional shell and tube heat exchangers use simple segmental baffles. It can be replaced by helical baffles, which increase the heat transfer efficiency and reduce pressure losses. Their usage is demonstrated in the primary circuit of IV.

Do baffles increase efficiency?

Use of baffles Prevent the effects of steam starvation, which is increased with both fluid velocity and the length of the exchanger. Direct shell-side fluid flow along tube field. This increases fluid velocity and the effective heat transfer co-efficient of the exchanger.

What is heat exchanger efficiency?

The heat exchanger efficiency is defined as the ratio of the actual rate of heat transfer in the heat exchanger, q, and the optimal rate of heat transfer, qopt,(1) η = q q opt = q U A ( T ‾ – t ¯ ) The optimum (maximum) rate of the heat transfer is the product of UA of the heat exchanger under consideration and the …

What is the purpose of baffles?

A baffle is an integral part of the vessel’s mixing system that promotes better flow of fluids for maximum efficiency. Its primary function is to prevent the swirling in agitation by converting the swirling into a desired flow pattern.

What is the purpose of baffles in heat exchanger?

Baffles serve two functions: Most importantly, they support the tubes in the proper position during assembly and operation and prevent vibration of the tubes caused by flow-induced eddies, and secondly, they guide the shell-side flow back and forth across the tube field, increasing the velocity and the heat transfer …

How do baffles increase the heat transfer?

How can the efficiency of shell and tube heat exchanger be improved?

Heat transfer coefficient, pressure drop, baffles and fouling are responsible for the efficiency of the heat exchanger. By increasing the flow resistance the heat transfer rate can be increased by creating the turbulence in the shell side of the heat exchanger.

What is the efficiency of a heat exchanger?

The heat exchanger efficiency is defined as the ratio of the heat transferred in the actual heat exchanger to the heat that would be transferred in the ideal heat exchanger. The concept of heat exchanger efficiency provides a new way for the design and analysis of heat exchangers and heat exchanger networks.

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