Results 1 to 6 of 6
  1. #1
    Join Date
    Mar 2018
    Posts
    10
    Post Likes

    Exhaust air Heat recovery many exhaust air fans to one intake air fan ?

    hello , i need to install exhaust air heat recovery exchanger for commercial center, there is multiple exhaust air fans , there is only one air intake fan , how can i use a heat recovery system to linke between the many exhaust fans & the one outdoor air intake fan , & what is the best type of heat recovery for this purpose , plate air/air heat exchanger Or thermal wheel ....?

  2. #2
    Join Date
    Feb 2010
    Location
    montreal
    Posts
    296
    Post Likes
    If you have multiple Evac with no common duct.
    Maybe going with a heat recovery chiller and water coil(or glycol)
    Hard to say but it's a possibility that I think might work.
    All depend on equipment cost VS payback.
    Be sure to respect minimum water volume specified by manufacturer (around 3 to 6 gallon per ton)

  3. Likes DavidDeBord liked this post
  4. #3
    Join Date
    Jun 2016
    Posts
    9
    Post Likes
    What is the total CFM of the exhaust and total CFM of the intake? How far apart are the exhaust fans and how far away from the intake fan?

  5. Likes DavidDeBord liked this post
  6. #4
    Join Date
    Jun 2012
    Location
    Northern NV
    Posts
    1,856
    Post Likes
    HRV vs ERV depends on your locale, dry desert or "Green grass" climate.

    Flat plate is easier to maintain than a wheel.

  7. Likes DavidDeBord liked this post
  8. #5
    Join Date
    Jun 2018
    Posts
    7
    Post Likes
    You could potentially use a run around coil on all the exhaust ducts and pipe the water to the intake coil. The control is a bit tricky, I think thermostatic valves could be used to balance each run around (exhaust side). I've never done this before, but am designing a similar system currently and this is my plan.

  9. #6
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    1,248
    Post Likes
    What type of units serve the tennents? Are you trying to save on cooling or heat? Are the spaces like a mall? Need more info.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •