Recent content by ida

Hi, I had to change the initial conditions and the delta temperature in the heat transfer equation to make them fit the dataset I have. :) Looks like you are indeed very correct in your assumptions that the temperature is the culprit. Using your heat transfer model, the calculated mass...

Assuming the process is isentropic, could I not calculate the temperature using: (?) T_2/T_1 = (P_2/P_1)^{{\gamma-1}/\gamma} I'm sorry, what I actually meant was the calculations did not fluctuate as much by using a theoretical temperature based off the pressure, instead of the measured...

Hi Thanks again :) Calculating the temperature based on the compression ratio, adiabatic, leaves me at the same conclusion as you. There must be an issue with the temperature sensor as expected temperature should be around 40 deg. C. T_2=T_1(V_1/V_2)^(\gamma-1) With T_1 = 18.6 C and V1 =...

Hi, Chet Thanks for you input, I appreciate it very much. The setup is quite simple - I'm measuring the piston position and calculating the gas volume from known dimensions. The pressure and temperature sensors are mounted in such a way that they are both in contact with the gas...

Hello everyone, I have an rather large piston-cylinder containing gas that is compressed when the piston extends. Using three sensors I am measuring the pressure, temperature and volume of the gas while I force the piston out using a winch. The system is closed and no gas is released or added...