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Recent content by ribin

  1. ribin

    simple condensate drain valve

    The enclosure won't be air-tight, however it won't 'open' either. The U trap could be a goer - I may have to change the outline of the enclosure, but this might be acceptable. Thanks! Robin
  2. ribin

    simple condensate drain valve

    Hi I am looking to source a simple mechanical valve which allows condensation to drain from the base of a 1500x800x500mm steel enclosure, but prevents the enclosure 'breathing', i.e. large air exchange with surroundings. The surroundings will be at 100%Rh for long periods, with the enclosure...
  3. ribin

    does heatsink requires sunshield?

    Thanks Poetix I had over looked the considerable temp difference across the sunshield. I am using a composite of a Nomex honeycomb plus laminates, so I have now assumed ambient temp for 'cool' surface of sunshield. This gives more believable results. Robin
  4. ribin

    does heatsink requires sunshield?

    Hi I have an electronics enclosure with heatsinks at 360K mounted vertically on outside of box, with heatsink emissivity 0.8, absorptivity 0.3, and solar gain of ~1000W/m^2, dissipating 100W of heat, ambient temp 320K. Heat transfer coefficient for convection estimated as 2 W/Kelvin...

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