Q = M x cp x DT
Yes Dear,
The heart of thermal engineering is this.. Go any where & this formula will follow you 🙂
In any heat exchanger you must balance following equations
Mh x cph x DT h = Mc x cpc x DTc = U A LMTD
Where , h & c are for Hot & Cold fluid।
I’m attaching a Paper for your reference, You can study it & answer them all.
