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  1. Blutooth

    AC current when grounding AC and DC conductors in PV system?

    Hi all, I am reading a book called Photovoltac Systems (by James P. Dunlop, I recommend it to everyone trying to get a better understanding on the subject). There is a part on grounding that I can't get my head around, I'v included a picture below that shows two possible lay-outs. The...
  2. Blutooth

    Two motors on different grid running powering one extractor

    Hi all, I'm having a problem understanding an extraction set-up. They have extractors that are used to keep labs constantly on a slightly lower pressure than atmospheric pressure to prevent leaks. To be absolutely sure that the extraction never stops there are two induction motors are fitted on...
  3. Blutooth

    Filtering before heat exchanger

    Hi all, First post on this forum, so I hope I am posting it in the right place. Here goes... I am designing a system to recover heat from several gas streams coming from an oven. The problem is that most of these streams contain different small particles such as sugar (caramel) and different...

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