Recent content by matgt

Yeah I just went back and looked and although it doesn't say explicitly I believe that it is gage which as you said would bring the pressure down to 30.4% based on my calculations. I'll try and call the company tomorrow to be sure. Thank you so much for all the help.

Okay thank you so much for all the help Goest. I called the manufacturer and got the standard conditions. In response to your prior post, I do have access to a computer program with most fluid property tables built in. I actually have already modeled the system to some extent but am trying to...

So I'm having a little trouble figuring out how to calculate the isentropic efficiency of an air motor. The information that was obtained from the manufacturer gives: @ 2000 rpm and 700 kPa (7 bar) flow of free air: 480 m^3/hr (I'm guessing this means the air exiting the motor) Power = 7...

Thanks so much for the help Q_Goest. I for some reason hadn't been considering already available air motors. Those are basically what we are looking for. I do have some questions that I'm hoping someone can help me with. The expansion of a refrigerant gas is quite different than the...

I am working on a project to design an organic Rankine cycle to convert low temperature thermal energy (waste heat or geothermal) into electrical energy. We are trying to select an expander to extract work from the pressure differential in the refrigerant. The refrigerant (ammonia or R134a)...