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  1. Ron757

    Obstruction in front of louvers

    Thanks SlideRulerEra for the information. Yes, I realize the some differences between liquids and air. I used a chart that takes into account pressure, temp and flow in determining the pressure loss. But not familiar with effect on fans, etc. I am from the slide ruler era too. I am helping...
  2. Ron757

    Obstruction in front of louvers

    It is also helpful to know that this is ventilation for a emergency generator in a building. It would not be a constant ventilation but would happen approximately for a half hour every two weeks for testing. And during emergency conditions.
  3. Ron757

    Obstruction in front of louvers

    What is meant by "1 object diameter's separation"? What is the definition for "object". I am am a pump and piping engineer so I understand such things as 10 pipe diameters needed in front of a flow meter is required to straighten out the flow. Is this basically the same thing? I tried to...
  4. Ron757

    Obstruction in front of louvers

    Is that because of the pressure loss by the planters would be excessive or is there another reason? How much pressure loss would the planters cause? How about the sign in the second example? Would the sign cause a problem?
  5. Ron757

    Obstruction in front of louvers

    For a project I'm working on, there is a 8.75' x 6.5' acoustic intake louver that might have a 3' tall planter located 10" from the louver. The airflow is 13,000 cfm and the face velocity is 508 fpm. Is there enough room between the planter and the louver? Is there a minimum distance that...
  6. Ron757

    Diesel generator exhaust flue within a building

    I can see a need for negative pressure in the flue. Ventilation of the of the annular space between the flue and walls might be another option. For safety reasons, it makes sense. I need to look at the fire and building codes for this application. Thank you so much for your help in this. I...
  7. Ron757

    Diesel generator exhaust flue within a building

    The question concerns the design of emergency generator placed inside a proposed building. The exhaust flue must be placed inside the walls extending up to the top of the building. Because of a long equivalent length of the exhaust flue(about 40-50 FT and bends), the calculated pressure loss...

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