Hello
As the title reads, I need help urgently. I'll appreciate any help I can get.
I need to size a plate and frame heat exchanger (PHE) and I am having trouble doing so.
So far I have followed Coulson and Richardson V4 (I believe) for a brief design methodology to design a PHE.
I am getting confused by the iterations.
If my U-value is smaller than the estimated U-value I initially used to estimate the area, surely the area I calculated that pertains to the estimated U-value, is no longer valid?
If I put my new calculated U-value into the Q=UAT_m equation, I will get a new area and have to start my calculations from scratch, but the U-value changes again. How can I know the value of A, if my calculated U-value is different to the estimated U-value?
Also, I have typed in plate and frame heat exchanger into the search bar and I've seen some of those resources before but didn't feel they were helpful.
I don't know how to move forward, any suggestions?
Thanks!!!