Hi @Chestermiller, I am having some doubts on the temperature of the first evaporator.
Assuming the temperature of the first evaporator is the same as the boiling temperature of the NaOH solution..
Is the temperature of the first evaporator equals to the boiling temperature of stream F or F1...
I just realized that I can get the specific enthalpy of stream S at 3.5 bar, by interpolating from 3.4 bar to 3.6 bar from from this table:
Table1: Properties of saturated steam: Pressure table
For stream F, I can obtain the specific enthalpy from these charts:
Chart1: Enthalpy of NaOH solution...
Homework Statement
Homework EquationsThe Attempt at a Solution
I have identified that only the specific enthalpy for stream F can be found from literature values, whereas the specific enthalpy of other streams are unknowns.
The specific enthalpy of streams S, V1, C1, C2 and V2 are unknowns...
I see. Meaning there will be a total of 140 tubes in the heat exchanger? But wouldn't that be 140 tube passes? I'm confused as to what is the difference between 'tube pass' and 'tube'
Homework Statement
'A shell and tube exchanger is used to do heating, with single shell and 2 tube passes. There are 70 tubes each with an outside diameter of 25mm and length of each tube pass is 6m. '
I am wondering whether the 70 tubes are in between the 2 tube passes, or is it 1 tube pass...
Erm, not really..
1) Froce on Q is proportional to field strength of P
2) Potential gradient is proportional to gradient of EPE
3) so force is proportional to the gradient of EPE
why can't I just straight away write :
1+3) Froce on Q is the gradientof EPE