Search:

Type: Posts; User: wyblueheart

Page 1 of 2 1 2

Search: Search took 0.01 seconds.

  1. Replies
    4
    Views
    710

    Hi, Core, I think I don't have much basic...

    Hi, Core,
    I think I don't have much basic knowledge, so please forgive me once I ask some basic questions.
    I haven't decided which kind of system I want to install, possibly VAV with changeover...
  2. Replies
    4
    Views
    710

    Dear friends, For some interior rooms, heating...

    Dear friends,

    For some interior rooms, heating load would be 0 in winter.
    But we need to supply some fresh air.How to deal with overheating problem?

    I want to use single package rooftop unit....
  3. Replies
    8
    Views
    1,369

    thanks. I will check IMC.:)

    thanks. I will check IMC.:)
  4. Replies
    8
    Views
    1,369

    Bath fans should be sized to provide the larger...

    Bath fans should be sized to provide the larger of 50 cfm or 8 ACH in the bathroom :)
  5. Replies
    8
    Views
    1,369

    How about Bathrooms?? - 8 ACH?? I don't have...

    How about Bathrooms?? - 8 ACH??

    I don't have Ashrae handbook :(

    Thank you.
  6. Replies
    8
    Views
    1,369

    Carnak,I got it. Thanks a lot!!!!

    Carnak,I got it. Thanks a lot!!!!
  7. Replies
    8
    Views
    1,369

    Dear all, For commercial buidling, what is...

    Dear all,
    For commercial buidling, what is ventilation rate for washroom? (Ashrae requirement)

    250 sqft, assume 2 persons there

    Thanks!
  8. Replies
    2
    Views
    586

    Fire protection

    Dear friends,

    Can anybody recommend a code or standard for fire protection design of buildings in terms of HVAC system and fire control especially.

    I don't like "NFPA 90A Standard for the...
  9. Replies
    3
    Views
    1,855

    Dear all, I checked the following tables, it...

    Dear all,

    I checked the following tables, it shows for differenct duct diameters, the minimum thickness of galvanized iron.
    1) How to consider rectangular ducts comparing duct diameter if I want...
  10. Replies
    3
    Views
    1,761

    Dear John, I got the information I need....

    Dear John,

    I got the information I need. I really appreciate your help. Thanks a lot.

    Wy
  11. Replies
    3
    Views
    1,761

    Hi, guys, What does 24K7 mean when it...

    Hi, guys,
    What does 24K7 mean when it refers to beam or joist???? does 24 represents height??

    I need to adjust the ducts location according to the height of beam.

    By the way, For label...
  12. Replies
    8
    Views
    975

    Thanks a lot. Yes, I see that only even number...

    Thanks a lot.

    Yes, I see that only even number diameter diffusers are available. How about flexible ducts? Still need to be even number?

    I am using Elite Ductsize software to calculate, and the...
  13. Replies
    8
    Views
    975

    For office room 10*12 without exterior wall, only...

    For office room 10*12 without exterior wall, only 80CFM is needed according to my calculation.
  14. Replies
    8
    Views
    975

    Hi, everyone, I am an entry-level engineer....

    Hi, everyone,
    I am an entry-level engineer. I have never doing any projects before. So I have a few problems.
    1) After I calculate the loads, load of some room is small, only 4 or 5 inch...
  15. Replies
    0
    Views
    582

    Can anybody tell me. For commercial building, how...

    Can anybody tell me. For commercial building, how much is the maximum velocity for trunk and runout respectively? 2000-4000fpm?

    Usually, what's the value range for trunk and runout?

    Thanks.
  16. This is an office complex.

    This is an office complex.
  17. Can anybody give me an empirical value of cooling...

    Can anybody give me an empirical value of cooling load near Washington DC?

    The number I calculated is about 263Sqft/Ton.
    I have no idea this number is too high or too low.

    Thanks!
  18. Replies
    5
    Views
    1,358

    no window for the stairwell

    Thanks for all of your information.
    "Stairwell Pressurization
    BOCA, IBC and UBC require stairwell pressurization for buildings over 70' (high rise)."

    For the buidling I am working for,...
  19. Replies
    5
    Views
    1,358

    An office buiding, 3 floors, each floor...

    An office buiding, 3 floors, each floor 13464sqft, total height 36 ft,
    is there any requirement for the ventilation or positive pressure requirement for stairs?

    where can I check this??? Thanks
  20. will there need to be fire rated barrier between...

    will there need to be fire rated barrier between the furnace and the floor trusses?
  21. For 3-stories office building, 13200sqft each...

    For 3-stories office building, 13200sqft each floor, in West Virginia.

    This is the first time I do HVAC design, I have no experience. My supervisor wants to choose single package rooftop gas...
  22. Replies
    10
    Views
    935

    I post there already.

    I post there already.
  23. Replies
    10
    Views
    935

    Dhanna, where is Autodesk discussion group? in...

    Dhanna, where is Autodesk discussion group? in HVAC-Talk.com? Thanks.
  24. Replies
    10
    Views
    935

    HVAC Calc and Elite, which one is better?

    HVAC Calc 4.0 $389 for both commercial
    HVAC(Elite) $595 for commercial
  25. Replies
    10
    Views
    935

    Thanks for your reply. I prepare to use...

    Thanks for your reply.
    I prepare to use Autodesk Building System 2005. I have no idea about this actually.
    When I read " New Features Workshop", it says we can export zone data in Green Building...
Results 1 to 25 of 29
Page 1 of 2 1 2
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event