Expander, energy, enthalpy
Expander, energy, enthalpy
(OP)
Hi,
In our ASU we have a turbo expander/compressor. The expander is driving the compressor.
Now, we are thinking about the energy released at the expander.
The energy needed for the compression of a surten amount of gas must be released by the gas in the expander. (for this moment, we are talking about 100% efficiency, we know that's a theoretical case)
We want to calculate the energy released in the expander but at this moment the formula to calculate does not come in to our mind.
Gas inlet expander: 50 bar -80dgr C
Gas outlet expander: 5 bar -165 dgr C
Gas flow through expander: 24000Nm3/h Nitrogen
Gas inlet compressor: 40 bar 18dgr C
Gas outlet compressor: 50 bar 40dgr C
Gas flow through compressor: 30000Nm3/h Nitrogen
Hopefully someone can help us with the formula.
Thanks!
Cryotechnic
In our ASU we have a turbo expander/compressor. The expander is driving the compressor.
Now, we are thinking about the energy released at the expander.
The energy needed for the compression of a surten amount of gas must be released by the gas in the expander. (for this moment, we are talking about 100% efficiency, we know that's a theoretical case)
We want to calculate the energy released in the expander but at this moment the formula to calculate does not come in to our mind.
Gas inlet expander: 50 bar -80dgr C
Gas outlet expander: 5 bar -165 dgr C
Gas flow through expander: 24000Nm3/h Nitrogen
Gas inlet compressor: 40 bar 18dgr C
Gas outlet compressor: 50 bar 40dgr C
Gas flow through compressor: 30000Nm3/h Nitrogen
Hopefully someone can help us with the formula.
Thanks!
Cryotechnic
"Math is the ruler of your potential succes...."





RE: Expander, energy, enthalpy
turboexpander in a heavy hydrocarbon recovery plant instead of a compression refrigeration system.the problem is the choice of the expander : our gas flow rate is about 72.9 MSCF and for 3 pressure drop and finally the efficiency should be about 70% . i need help for the types i should use.
RE: Expander, energy, enthalpy
your post is al "little" confusing... Can you please give us more information?
What is the inlet pressure? What is the outlet pressure? what product are you using?
"Math is the ruler of your potential succes...."
RE: Expander, energy, enthalpy