What is the heat exchanger effectiveness?

Heat exchanger effectiveness is defined as the ratio of the actual amount of heat transferred to the maximum possible amount of heat that could be transferred with an infinite area. Two common methods are used to calculate the effectiveness, equations and graphical.

How does heat exchanger compare to efficiency?

Heat exchanger effectiveness You can compare the current heat transfer rate to the original (rated) heat transfer rate. A ratio of (Q/rated duty) will tell you how effectively your exchanger is working.

What does the effectiveness of a heat exchanger represent can effectiveness be greater than one?

The ratio of actual heat transfer rate to the maximum possible heat transfer rate is known as the effectiveness of heat exchanger. The heat transfer effectiveness is always less than the actual heat transfer.

What affects heat exchanger effectiveness?

Heat exchanger efficiency is highly affected by the velocity of the operating fluid so it is recommended that the flow rate should be increased from time to time. The increased turbulence works to retard fouling tendencies that otherwise impact heat exchanger performance and impede the flow of fluids.

How can the efficiency of a heat exchanger be increased?

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.

Which type of heat exchanger gives highest efficiency?

Each of the three types of heat exchangers (Parallel, Cross and Counter Flow) has advantages and disadvantages. But of the three, the counter flow heat exchanger design is the most efficient when comparing heat transfer rate per unit surface area.

Which heat exchanger has the highest effectiveness?

counter flow heat exchanger design
The three types of heat exchanger have advantages and disadvantages. When comparing heat transfer rate per unit surface area, the counter flow heat exchanger design is the most efficient.