Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

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

Search results for query: *

  1. spiraltooth

    Horsepower equation for isentropic positive dispacement gas compressor

    Thank you very much Dcasto. Does MMSCFDM mean the same thing as MMSCFD Million standard cu.ft./day?
  2. spiraltooth

    Horsepower equation for isentropic positive dispacement gas compressor

    SPGR = specific gravity (90% + hydrocarbons) Brake Horsepower per MMSCFDM = (ts + 460) / 520 * (50.8 * (Ratio) ^ CON - 1!) * (Ratio) - .715)) / (CON * (ratio - .793)) * ZAVG How do I get specific gravity for a gas? Isn't this dependent on pressure? Is there a conversion for perhaps molecular...
  3. spiraltooth

    Horsepower equation for isentropic positive dispacement gas compressor

    I have been able to find the equation for an air compressor that takes into account RPM, CID, compression ratio and efficiency and I have seen the non-positive equation that takes into account the input temperature and pressure cp and cv of a gas but I haven't been able to find an equation for a...
  4. spiraltooth

    TiO2 coating for electronic filter design

    Thanks very much for your clear explanations and skeptical thinking.
  5. spiraltooth

    TiO2 coating for electronic filter design

    I'm less concerned about whether the filter's charged plates are spotless than I would be about my windows as long as I have use of >95% of the filter's collection plate surface after a simple rinse. I'm more concerned about why you think the hydrophilic properties would be degraded. Do you...
  6. spiraltooth

    TiO2 coating for electronic filter design

    Then the greasy film (I had never noticed it was greasy until you mentioned it) which I'm assumeing is organic binds the inorganic matter to the surface in this case a TiO2 coating. I would be satisfied if a simple water rinse would replace scrubbing with soap and water given the coating and UV.
  7. spiraltooth

    TiO2 coating for electronic filter design

    Thanks Moltenmetal. I had seen the windows promoted as self cleaning and thought I could use the same principle. I take it the windows not being charged wouldn't attract any inorganic matter.
  8. spiraltooth

    TiO2 coating for electronic filter design

    I have an electronic air filter that uses charged plates to collect the contaminants and was wondering if they would be easier to wash off with a TiO2 and or Teflon coating in the presence of UV. Would it be necessary to increase the voltage on the plates to maintain the current?
Back
Top