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1. Convection heat exchanger

Thank you for that! I understand it much better now!!! In my thermo course, I think we just used steam tables for pure substances and the ideal gas equation for air. So I'd never dealt with a situation where the temperature was a function of time. I'm doing a second course later this year which...
2. Convection heat exchanger

Ah! Sorry Here goes, $$\dot{Q} + \dot{m}(h_1 - h_2) = \dot{m}(u_2 - u_1)$$ Heat is from convection so, $$hA_c(T_h-T_o) = \dot{m}(c_p + c_v)(T_o-T_i)$$ Is that correct? Why would ##T_i## be a constant but not ##T_o##?
3. Convection heat exchanger

$$\dot{Q} - \dot{W} = \sum_{out} \dot{m} (h+ke+pe) -\sum_{in} \dot{m} (h+ke+pe)$$ Hence, $$\dot{Q} = \sum_{out} \dot{m} h -\sum_{in} \dot{m} h$$ So for convection, $$hA_c(T_h - T_o) = \dot{m}(h_2-h_1) = \dot{m}c_p(T_o-T_i)$$???? Why would ##T_i## be a constant but not ##T_o##??

8. Convection heat exchanger

Hello Chestermiller; really apologise I didn't fill out the homework template. What does the over heat transfer coefficient ##h_c## have anything to do with the temperature difference being ##T_h - T_o##? I would argue that the temperature difference used in ##q = h_c A \Delta T## should be...
9. Convection heat exchanger

Hello guys, in the question attached, my understanding is that there is a heat transfer that heats the fluid from an initial at the input, to at the output. This heat transfer is via convection from walls of temperature . Firstly, . Because the walls are and the fluid is of a lower...