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(Solved): A counterflow heat exchanger is used to cool water from Tbi_(bi)=90C to Tbe_(be)=60C at a rate of m ...



A counterflow heat exchanger is used to cool water from

Tbi_(bi)=90C

to

Tbe_(be)=60C

at a rate of

m_(h)=0.5k(g)/(s)

with water (

Cpc_(c)=4187(J)/(kgK)

entering

T_(cl)=20C

at a rate of

m_(c)=1k(g)/(s)

. The overall heat transfer coefficient is

U_(m)=200(W)/(m^(2)(K))

. Calculate the heat transfer surface required and exit temperature of cold water.



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