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Thread: lasers and heat exchanger

  1. #1
    Join Date
    Nov 2017
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    Finlayson, MN
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    4

    lasers and heat exchanger

    Hello,

    first time to post here. we are a small manufacturing shop. we have four lasers two of which we are running and 2 are not hooked up yet. This is a large site so you may have already covered this hoping for some direction to threads or ideas. Our problem is not exhausting but the make up air. we are in a 1550 sq ft pole barn and with 4 lasers going we will need some kind of heat ex-changer to bring in the make up air. We have a 500 watt fiber laser. 2 150 watt co2 lasers and 1 100 watt co2 laser. we currently are exhausting with 6 inch metal duct pipe on the 500 watt and the 100 watt. with the cold weather coming we will need to bring in that cold air and need some way of heating it.

  2. #2
    Join Date
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    Suwanee, GA
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    3,195
    There is a recent thread on exactly this. In the upper right corner of your screen you'll find a search box, try it and you'll find a lot of info to go through.
    I have done so much with so little for so long, that I can do almost anything with practically nothing...

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  3. #3
    Join Date
    Nov 2017
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    Finlayson, MN
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    Thanks Gary!


    Quote Originally Posted by Gary Hair View Post
    There is a recent thread on exactly this. In the upper right corner of your screen you'll find a search box, try it and you'll find a lot of info to go through.

  4. #4
    Join Date
    Mar 2014
    Location
    Ankeny Iowa USA
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    2,389
    Quote Originally Posted by ken matheson View Post
    Thanks Gary!
    Ken Air to Air heat exchangers are pretty common in Minn as your building Codes did require at one time anyway.
    Retired Guy- Central Iowa: Master Electrician, HVAC commercial, Hobby metal Fab and Machine shop and more... , Ray Fine 20w Galvo Fiber laser , LightObject 40w CO2. MakerGear M2 3D Printer. Qe60+ Vinyl cutter.

  5. #5
    You are exhausting the Fibre cutter to external atmosphere?
    Poof! and just like magic the shop keeper dissappeared

  6. #6
    Join Date
    Nov 2017
    Location
    Finlayson, MN
    Posts
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    They may be common here Bill but not easy to find sources on the internet. When I first looked at this site I thought I saw a post where you were asking if shops need help with their exhaust systems. Is that something you do? we were going to make one but getting rid of the condensation is the problem.

  7. #7
    Join Date
    Nov 2017
    Location
    Finlayson, MN
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    yes we are exhausting the fibre laser outside. works fine for now but once we start exhausting four lasers we will be moving a lot of air.

  8. #8
    Join Date
    Mar 2014
    Location
    Ankeny Iowa USA
    Posts
    2,389
    Retired. But free advice.... whatever Cfm you exhaust you need to Make up. In a pole barn you might have enough in filtration to take care of most of that, but it still needs to be heated. On restaurant kitchens they have the make up air system tied into the exhaust system so the MUA comes on only when needed and adds heat as needed. Air to air heat exchangers do that for you automatically. They are not cheap but should be available online. There are lots of HVAC contractors in your state.
    Retired Guy- Central Iowa: Master Electrician, HVAC commercial, Hobby metal Fab and Machine shop and more... , Ray Fine 20w Galvo Fiber laser , LightObject 40w CO2. MakerGear M2 3D Printer. Qe60+ Vinyl cutter.

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