Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by KontrolFreak

  1. KontrolFreak

    Rate of Change of Decreasing Pressure in Vessel (Help a EE!)

    Thanks Latexman. Had that equation but the reminder to use absolute made my day and a huge difference!
  2. KontrolFreak

    Rate of Change of Decreasing Pressure in Vessel (Help a EE!)

    Do not need to get too detailed, but I need to know the rate of change of the pressure in a vessel(gas digester) caused by a compressor sucking the gas (methane) out. Starting pressures are 0-10 inches.
  3. KontrolFreak

    Gas Pressure Spike due to Valve Closing(A EE in need)

    Definitely looking for the pressure spike. I am looking for a quick estimation equation / program / calculation. I just can not see that affecting the system pressure that much. I had a Chem E quoting PV=nRT blah blah blah and he thought it would be like a fluid water hammer and wreck...
  4. KontrolFreak

    Gas Pressure Spike due to Valve Closing(A EE in need)

    1. 1000 ft 20" gas (methane) pipeline flowing 1250 scfm @ 5-10" W.C. 2. Valve closes 3. How high will the pressure "spike" ? 4. 2 - 8 Bio Gas digesters = huge volume in dome.

Part and Inventory Search