It depends. Basic thumb rule you need to follow is that, the temperature difference between hot fluid and cold fluid at any position needs to be >= minimum approach temperature. Let's keep that 10 degrees. For the case of co-current heat exchanger: hot outlet and cold outlet will be together, hence by the thumb rule, Thot-outlet needs to be greater than Tcold-outlet by atleast 10 degrees For the case of counter-current heat exchanger: hot outlet and cold inlet will be together, hence by the same rule, Hot outlet will always be 10 degrees higher than cold inlet. But that does not mean it will surely be higher than cold-outlet, which could be higher than hot outlet. hence, for co-current heat exchanger, hot outlet will always be greater than cold-outlet for counter-current heat exchanger, hot outlet may/may not be greater than cold-outlet.
Next please explain about profitabiliy analisis such return on Investment, payback period, net present value or net present worth, and sensitivity analysis. Thanks youu.
The best explanation on application I have seen so far. Please how about the reduction of heat exchangers, how do we minimize the utilities to be used, in one of the examples we cooled 1900 kw, can't that heat be integrated into the process to reduce the heat exchangers' addition and effectively reduce capex? Alsp could you do some ASPEN simulation tutorials as well as tutorials on utilities in ASPEN plus? Great tutorial!
This has to be one of the best tutorials on this topic online. Took me more than 2 hrs to keep pausing and thinking and following along on this 25 min video, but it was definitely worth it.! Thanks a bunch!
A great explanation. However, would you please tell me in which section you reduced one heat exchanger? Aren't they the same before and after calculation?
Just subbed, about to check out some of your other videos. You deserve way more subscribers! Did you ever think of using SMZeus . c o m?? You could use it to promote your videos.
