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Pressure Of Heat Source In An Organic Rankine Cycle

heat transfer orc pressure heat source

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#1 Noran Shedid

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Posted 19 March 2020 - 08:49 AM

Does the pressure of the heat source in an organic rankine cycle have to be higher than that of the working fluid?

 

It seems so from the temperature-entropy diagram of the cycle. I just wanted to make sure.



#2 Technical Bard

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Posted 24 March 2020 - 10:45 AM

No.  Only the temperature must be higher.



#3 Noran Shedid

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Posted 25 March 2020 - 12:17 PM

but there is a direct relation between temperature and pressure. In addition, on a T-S diagram the line presenting the heat source would be above that of the working fluid due to its higher temperature, this should mean that it is on a higher isobar, right?



#4 Technical Bard

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Posted 30 March 2020 - 05:02 PM

No.  Because the two fluids NEVER mix, only temperature governs heat transfer directionality.






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