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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.
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Products: Navetas Energy Monitor?

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    Anybody know more about this:

    http://www.navetas.com/products/showcase/energy-monitor/

    The technology looks interesting, identifying different energy uses from a single sensor. They publish "Contact Us" details on their website but several messages over the past few months have not produced a single reply ...
    • CommentAuthorbrig001
    • CommentTimeJul 23rd 2010
     
    I guess that all it does is measure the the ons and offs of current as different appliances are used and tries to guess what they are. It won't be able to separate all the devices on standby for example, and probably won't know if it is a hairdryer or vacuum cleaner that is being used. Something like this:

    9:00 1 amp
    9:15 5 amps - hairdryer switched on
    9:20 6 amps - light switched on
    9:25 2 amps - hairdryer switched off
    9:30 1 amp - light switched off

    so, from that you can tell that you have three loads:
    1 amp total standby for the house
    4 amps for one appliance - hairdryer in this case, but it won't know that
    1 amp for another appliance - light in this case.

    It could probably guess what things are from the power they use and the length of time they are used for - eg. vacuuming takes longer than hairdrying - well it does in my case.

    Very clever all the same.
    Brian.

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