Heat transfer efficiency of the heat exchanger
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What is the general heat transfer efficiency of various types of heat exchangers? Is there a rough figure? For example, 80%
:funk: Asked weakly. . . What is heat exchange efficiency? . . :hug:
Reply 1# hgm: Does the efficiency mentioned by the original poster refer to: Efficiency = 【(Heat released by the hot stream) / (Heat absorbed by the cold stream)】*100%? Or reverse the numerator and denominator? The design institute always calculates based on 100%. Discounts are not taken into account.
I’ve never heard that heat exchangers also have their heat transfer efficiency calculated ? ?
The heat transfer efficiency of the heat exchanger? It seems better not to mention that claim.
It seems that heat transfer efficiency is only taken into consideration in heat pipe exchangers, with a value of around 90%; it is generally not considered in the design of exchangers with other configurations
There is a parameter used to measure the heat transfer capacity of a heat exchanger, namely the heat exchanger number, which represents the amount of heat transferred per unit area of heat exchange when the temperature of the fluid increases or decreases by one degree. Traditional shell-and-tube types are generally relatively low, around 2000 ； The cost of plate heat exchangers is relatively high, ranging from 4000 to 5000 ； There is a type of Secespol heat exchanger whose coefficient can reach 14,000 under ideal conditions, thanks to its unique structure.