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Define effectiveness and NTU of a heat exchanger.
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written 7.8 years ago by
teamques10
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Heat Exchanger Effectiveness (ε)
The heat exchanger effectiveness is defined as the ration of actual heat transfer to the maximum possible heat transfer.
ε=Actual heat transferMaximum possible heat transfer=QQmax
The actual heat transfer rate Q can be determined by writing an energy balance over either side of heat exchanger
Q = ṁh.Cph.(th1 - th2) = ṁc.Cpc.(tc2 - tc1)
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