Quality of energy:Thermodynamics

>>8482518
Than***

Thanks Cauchy.

>>8482518

Pressure doesn't have units of energy dude. Your question is nonsense. You have to be doing work in order to change a system's energy, and pressure doesn't imply work on it's own.

>>8482575
He might be referring to boundary work

>>8482518
Define "quality" of energy?!

Pressure is a property of energy not a source. A gas with higher internal average kinetic energy has higher pressure (i.e. thermal energy).

>>8482518
I was doing thermo problems today and had looked up the properties for helium.

I had written down the gas constant, R in terms of Btu/(lbm*R) and (psia*f^3)/(lbm*R).

I had miss calculated when finding some shit, and had thought to use the psia gas contstant instead of the Btu, because at the time i thought i needed to cancel the pressure but i was wrong in considering that process because i was/am tired as fuck.

But i had a gotten a very interesting number and it just made me think about the potential quality of energy that might be associated with pressure.

The quality consideration comes from when we were studying the carnot cycle; You can do more processing with higher temperatures, thus creating the concept of energy quality being superior with higher temperatures.

But it's in the units that really triggered this question....


Energy=Btu

Power=Btu/s

I was to solve for power....But considering that power is an energy rate....i looked at the energy conversions of energy and found out that

Btu=5.40395psia*ft^3

Shortly after this consideration, i had emailed my thermo teacher about the different perspectives involved in understanding an entire system, processes, and process devices that would optimize a desired result...more of a general sense, but a question to understand why i would choose a specific system component over another.

>>8482518
Quality of energy depends on the quantity of energy that can be extracted from a system from the overall. Two examples:

1 - Mechanic energy has the highest quality of energy, as all the energy can be used to do useful work.

2 - Thermal energy has a low quality of energy because you can't use all of the energy to do useful work. There are always remains and there's a higher energy loss in real cycles.

If you "use pressure as a form of energy" you are increasing the internal energy of the system by adding mass or reducing its volume. When you extract that energy from the system it will come up as mechanical energy due to the difference of pressure.

Conclussion: Your post makes no sense and OP is a faggot.

>>8483616
I think it's safe to say that around winter, thermal energy is good quality

>>8483616
Thanks dick head.

I'll consider what you said when I go to study thermo.

>>8482575
>it's

>>8482518
This question literally makes no sense.

Quality of energy is entropy. Go read about the second law of thermodynamics.

Yea, that's why i am studying these things....

Thanks for the top kek answers. preciate it.

I just figured since there was some energy conversions by the use of a pressure (turns out it's pressure and volume) into a Btu, that there was some consideration towards energy.

Ya'll can go back into your holes now.