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Recent content by marc400317

  1. marc400317

    Fire Hose Reel in tunnels

    Hello, I have been asked to comment on an existing fire fighting system recently built. It consist of 4 hydrants in a tunnel where hydrants are 120 m apart. The problem they are facing is that they have install fire hose reels of 30 m in length which have 30 m [hose length] + 10m [throw]= 40 m...
  2. marc400317

    Camp fire fighting system design

    No one replied so far. Thanks
  3. marc400317

    Camp fire fighting system design

    G'day, I was asked to design a firefighting system for a labor Camp sonsisting of 28 portable cabins (steel structure 12m x 3.5m x 4m. The area of the camp requiring a fire fighting system to be implemented will cover an area of 19081 m2 with a total of 204 cabins consisting of 12 persons each...
  4. marc400317

    What is the best Cooling system for an open area?

    there's no space for an evap cooler under the overhang it must be placed at the back of the building and ducting the flow all the way from the back to the overhang. The evap cooler air supply would reach a max temp of 28deg, add 2deg for ducting energy gain, you're somewhere in the 30degc...
  5. marc400317

    What is the best Cooling system for an open area?

    The thing is that we have a limitted space at the back of the building. I would rather place a package unit at the back that might use the same space. Though routing a duct from the back of the building to the overhang structure would be messy and look obvious unless someone could advise a way...
  6. marc400317

    What is the best Cooling system for an open area?

    Hello All, I was asked to design a high end cooling system for an overhang connected to a palace. this Overhang structure is 40meters x 20meters and is open area from 3 sides and meant to provide shade at the building entrance. the temperature can reach 50 degc in the summer and it's a dry...
  7. marc400317

    FIREWATER Network system - Leakage at PIV Valves

    The Network will be buried at 1.2m inside the facility boundary.
  8. marc400317

    FIREWATER Network system - Leakage at PIV Valves

    RTR pipes
  9. marc400317

    FIREWATER Network system - Leakage at PIV Valves

    Yes We did
  10. marc400317

    FIREWATER Network system - Leakage at PIV Valves

    Hello All, I am currently studying all possible solutions to stop the leak in the firefighting system network for a large facility where 6 diesel operated pumps (10.2Bar@568m3/hr)ea. and supplying diffrent areas through RTR pipes ( size varies from 36" to 10"). According to our supplier and...
  11. marc400317

    minimizing water hammer

    Well Said BigInch and thank you for your answer. I am somehow conviced though as you said if reflected pressure waves are lesser than the original pressure then why do we bother going for a transiant hydraulic analysis measuring for the water hammer pressures ? or is it only when a valve...
  12. marc400317

    minimizing water hammer

    Thank you all, well that's what I thought in the first place however our consultant would like to be convinced somehow. anyone aware of a good water hammer simulation software or reference? Regards, Marc
  13. marc400317

    minimizing water hammer

    Hello All, I am designing a pump station ( 3 pumps, 2d/1s) pumping brackish water with a total flow of 70m3/hr through a DN160 Ductile iron pipe buried 1.5 m from FGL. The total length of the pipe is 2700m discharging into a Box Culvert. To reduce the water hammer effect I have installed a...
  14. marc400317

    PDE solve

    Hi all, as part of the design of a catalytic combustor, I had completed a PDE system that governs the temperature distribution of air and ceramic as hot air flows through a honeycomb Ceramic cylinder. I am positive that the PDE system is right, however when plotting the result using MathCad...
  15. marc400317

    Static Pressure in air blowers

    Thanks guys
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