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  1. Here is one work in progress photo. What is...

    Here is one work in progress photo.

    What is the best way to clean hand prints off of the sheet metal? Acetone seems to evaporate too quickly and does wipe the fingerprints right off. What do you...
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    btuhack Thanks for your reply. I am...

    btuhack

    Thanks for your reply.

    I am guessing you saw the pictures of the floor from the other thread. If you would design and install the HVAC system for the budget of the floor finish guy I...
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    penderway Thank you for your help and advice....

    penderway

    Thank you for your help and advice.

    jonblack
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    penderway Can you suggest a sidewall grille...

    penderway

    Can you suggest a sidewall grille make/model that would be suitable for my application? The problem I have run across, at least with the people that I have dealt with, is that most...
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    Thanks for the reply and for the explaining the...

    Thanks for the reply and for the explaining the difference between duct velocity and supply velocity. That is a facet of this subject that I have not considered in the few weeks I have been learning....
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    I am not an expert so I may be missing something,...

    I am not an expert so I may be missing something, but my ductulator (McQuay DuctSizer) shows 325 CFM at .06" giving 585.8 FPM in a 10.1" diameter pipe.

    I also used the Velocity Calculator on the...
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    I also thought about turning the return air...

    I also thought about turning the return air grille upside down so it pulls air from above the return more readily than from below the return. Plus I think it will be more visually appealing since you...
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    I guess I am just worried that the return would...

    I guess I am just worried that the return would suck in the air from the two 10" supplies that are closest to the return grille. I know about the blowing out a match versus sucking out a match...
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    Just to clarify there will be more than one...

    Just to clarify there will be more than one return. There will actually be four returns. One return will be in the hallway and there will be a return in each of the two offices. The return in...
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    Is this return too close to the supplies?

    I am in the process of getting my HVAC system designed. If you care to read more information please check out my thread here:
    ...
  11. OK. So you are, in fact, referring to my updated...

    OK. So you are, in fact, referring to my updated supply plenum. Funny thing is, when I went to visit the sheet metal shop the first time I told them I wanted a 90 with radiused heel and throat. They...
  12. Thanks for the recommendation on the Air Bear...

    Thanks for the recommendation on the Air Bear filters. I got a couple of spare filters when I got the filter cabinets, but I will always need a good source of cost-effective filters in the future. I...
  13. Are you referring to the new supply plenum design...

    Are you referring to the new supply plenum design or the old supply plenum design? There will be turning vanes in the 90 as well. Let me know because I am interested in making this the best I can.
    ...
  14. Here is the new supply plenum design on shown...

    Here is the new supply plenum design on shown with the AH and the return plenum.

    http://www.realworldpracticalshooters.com/ar15/hvac-021.jpg

    jonblack
  15. Here are some drawings of the new supply plenum...

    Here are some drawings of the new supply plenum design.

    Looking at the original design I thought it looked too skinny. The engineer explained that to be 0.06" WC/100' it should be 22.75" by 15"...
  16. I'm doing some research on outside air, and my...

    I'm doing some research on outside air, and my current plans are to add anywhere from 60-100CFM of outside air.

    jonblack
  17. I just talked with the engineer at the sheet...

    I just talked with the engineer at the sheet metal company and we redesigned the supply plenum to provide the proper flow and static pressure. I will update the drawings when I can.

    jonblack
  18. I've been busy as a bee this morning taking...

    I've been busy as a bee this morning taking measurements and working in Google SketchUp.

    I want to use a media air cleaner and I looked at Carrier FILCAB (I have two of these in my home), the...
  19. I wanted to add some screen shots of the proposed...

    I wanted to add some screen shots of the proposed Supply Plenum. There will be 2 - 6" take offs with dampers, and 2 - 16" take offs, no dampers.

    There will be turning vanes in the Supply Plenum...
  20. I think the windows work pretty well in terms of...

    I think the windows work pretty well in terms of rejecting heat. As well as one could expect anyway. They are double paned, and both panes are tinted with the outside pane having a solar reflective...
  21. One thing that I did not mention about running...

    One thing that I did not mention about running spiral duct down the center of the building is that there is a 14" beam there so the duct would have to be run lower than the beam or run only half way,...
  22. The ceiling fans have high pitch blades so they...

    The ceiling fans have high pitch blades so they move a lot of air. They will literally blow papers off your desk.

    Unfortunately the direction switch is under the trim cap so I will have to get up...
  23. The walls in the photo above will be covered in...

    The walls in the photo above will be covered in the same material (metal U-panel) that the ceiling is covered in.

    jonblack
  24. Putting spiral duct right down the middle sounds...

    Putting spiral duct right down the middle sounds interesting. However, the fans sure are handy and I am afraid spiral duct might cost more than I expect. It would be good to know what the cost of...
  25. I am trying to budget for this building the best...

    I am trying to budget for this building the best I can. To be honest, everything is costing much more than I can imagine. I am losing money by the bucket fulls by not being open yet. I am going to...
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