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Recent content by JonathanDube

  1. JonathanDube

    Co2 production for greenhouse

    Hi, I am developping Co2 electronic control systems. I wonder if there could be a cheap alternative to produce Co2 for greenhouses. What is used right now in the industry to raise the Co2 ppm concentration is:direct Co2 injection and, propane or natural gaz combustion. Thank you Jonathan Dube
  2. JonathanDube

    Co2 production for greenhouse

    Hi, I am developping Co2 electronic control systems. I wonder if there could be a cheap alternative to produce Co2 for greenhouses. What is used right now in the industry to raise the Co2 ppm concentration is:direct Co2 injection and, propane or natural gaz combustion. Thank you Jonathan Dube
  3. JonathanDube

    Co2 production for greenhouse

    Hi, I am developping Co2 electronic control systems. I wonder if there could be a cheap alternative to produce Co2 for greenhouses. What is used right now in the industry to raise the Co2 ppm concentration is:direct Co2 injection and, propane or natural gaz combustion. Thank you Jonathan Dube
  4. JonathanDube

    Co2 production for greenhouse

    Hi, I am developping Co2 electronic control systems. I wonder if there could be a cheap alternative to produce Co2 for greenhouses. What is used right now in the industry to raise the Co2 ppm concentration is:direct Co2 injection and, propane or natural gaz combustion. Thank you Jonathan Dube
  5. JonathanDube

    Co2 production for greenhouse

    Hi, I am developping Co2 electronic control systems. I wonder if there could be a cheap alternative to produce Co2 for greenhouses. What is used right now in the industry to raise the Co2 ppm concentration is:direct Co2 injection and, propane or natural gaz combustion. Thank you Jonathan Dube
  6. JonathanDube

    Aluminum with Steel screws

    Yes...sorry, I meant Zinc screws. I was about to change all the screws for Aluminium screws because of the corrosion (Zinc+Aluminium) But first, I need some advice about how fast corrosion can deteriorate the screw thread... I heard that there was no problem for about 2 years. On the other...
  7. JonathanDube

    Aluminum with Steel screws

    We have 1/16" Aluminum sheeting screwed with steel self taping screws. The product gets heated 160°C maximum in a 50-70 % humidity environment. We are wondering how long (very approx.) could the thread hold the screw in place without being all "eaten up" by corrosion. Thank you Jonathan Dubé...
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