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Recent content by ajoven

  1. ajoven

    Ventilation Ducting - Psychometric Chart

    I am ventilating a second floor area in a recip engine power plant with just outside air. I will distribute the air through a duct with registers. The duct will be insulated inside with 1" insulation and outside with 2" insulation. The area gets very warm (120+ with engines running during the...
  2. ajoven

    Ventilation - Pressurized Building

    Again, thanks for all the responses. I guess I should have provided more detailed information! Heat source: four 8000 hp engine generator source (total heat load at 525 kw each from manufacturer - split in half occupied and unoccupied zones) Intake ventilators: total 280,000 cfm Roof gravity...
  3. ajoven

    Ventilation - Pressurized Building

    Thanks Folks for responding! To either one of you! I have cfm in and cfm out along with the differential pressure. When using the equation lilliput1 have indicated, is cfm1 the differential cfm or the cfm in or the cfm out? It is my understanding that a good static pressure valu is in the...
  4. ajoven

    Ventilation - Pressurized Building

    Folks, Need some assistance! I have a power plant that is ventilated by power ventilators at a certain amount of cfm at the occupied level and the exhaust vents are located at the roof. The PP is pressurized (exhaust is less than intake). What is the best way to calculate the pressure...
  5. ajoven

    Ventilation - Open 2nd Floor Power Plant

    Thanks guys for your comments! Just for clarification, the area I would like to ventilate is about 10 to 12 ft away from the nearest engine (again on the 2nd floor - 14 ft. aff). Budget is limited so doing anything to the existing engine area is probably out of the question. The engine area...
  6. ajoven

    Ventilation - Open 2nd Floor Power Plant

    I need to ventilate an open second floor where the temperatures can be as high as 115 F to 120 F during the summer (in PA). It is mainly unoccupied and is used for storage. Our client would like the make the 2nd floor more bearable. I was thinking of introducing outside air into the second...
  7. ajoven

    SPCC Plans for Electrical Substations....General Question

    Yes, I understand that 6" gravel is not a "containment" but will it not impede the flow of any spilled fluids? Also, a tranformer that has lost its fluid would create a electric transmission interruption therefore a substaion crew would probably be out almost immediately to find the problem adn...

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