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  1. SMontgomery119

    hvac design load estimates

    I'm looking for a source for intitial rough design load estimates for the below: cooling - sq-ft/ton people - sq-ft/person air change - cfm/person primary air - cfm/sq-ft lights - watts/sq-ft power - watts/sq-ft Buildings I'm trying to obtain this info. for are below: indoor pool athletic gym...
  2. SMontgomery119

    Piping Cost Data, Caribbean

    We're looking for a rough estimate of Material and Labor costs to provide the developer. We are not providing an estimate for bid.
  3. SMontgomery119

    Piping Cost Data, Caribbean

    Hello, I have to cost out the piping system for a constuction project located in the Caribbean. Is anyone aware of Mechanical Cost Data adjusting factors for construction sites in the caribbean, in particular, Anguilla Island? I have the 2003 RSMeans Mechanical Cost Data Manual. Any thougts...
  4. SMontgomery119

    Friciton Loss Mulitplier

    Yes, I have the all properties of ethylene glycol. However, my piping head loss values are for water. I still need a multiplier to convert water piping head loss to ethylene glycol piping head loss. The question is what temperature do I compute the water friction factor at? --Steve
  5. SMontgomery119

    Friciton Loss Mulitplier

    Hello, We are designing a new AC piping system that uses ethylene glycol chiller fluid that can go down to 8-degrees Fahrenheit. I need to compute a friction loss factor to adjust the piping system head loss assuming water is the fluid to the actual head loss for ethylene glycol. I found that...
  6. SMontgomery119

    Parallel Pumps Head Loss

    That's right! My mistake! The bypass pump is 2-ft head piping at the pump plus 58-ft in the common pipe system that equals 60-ft of head total for the bypass pump. The 58-ft head section connects to the input/output of the two pumps in parallel. Thanks! --Steve M.
  7. SMontgomery119

    Parallel Pumps Head Loss

    It turns out that the fitting losses associated with each individual pump are significantly different: pump-1 32-ft and pump-2 2-ft Do I simply add each pumps fitting loss to the main section loss of 58-ft? to compute pump-1 90-ft loss and pump-2 34-ft loss? Comparing piping to circuit...
  8. SMontgomery119

    Parallel Pumps Head Loss

    Yes, I want to know the head loss for each pump. What's the logic to your answer? --Steve
  9. SMontgomery119

    Parallel Pumps Head Loss

    Hello, I have two parallel pumps: pump-1 has a 32-gpm flowrate and pump-2 has a 96-gpm flowrate. These two pumps feed into a loop that has a 128-gpm flowrate and 58-ft of head loss. How much headloss do I use from the 128-gpm loop for each of these pumps for pump sizing? --Steve M.
  10. SMontgomery119

    FEA Modeling Pipe-to-Vessel Interface

    Yes, it is a nozzle, i.e. a 20-foot pipe, including 2-90-degree bends, attached to a vessel. It appears that nozzle pro will model the pipe w/ beam elements. The failure is in the weld at the pipe/vessel support plate interface. The load is a 95-to-400 degree F temperature differential...
  11. SMontgomery119

    FEA Modeling Pipe-to-Vessel Interface

    Hello, I am looking for FEA software to help model a pipe-to-vessel interface. As displayed in the attached drawing, the pipe has two 90-degree bends shortly before interfacing the pressure vessel. The pipe/vessel interface is supported with a 24"x24" and 3/16" thick plate. The piping fluid...

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