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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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General: Turning off standby- the best method.

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      CommentAuthorDamonHD
    • CommentTimeJun 26th 2012
     
    Today's DEFRA/DECC/ETS report suggests ~£86/y per household wasted on standby, of which about £60 is modems and routers.

    Your boiler, RobL, is costing you about £10/y.

    http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&ProjectID=17359&FromSearch=Y&Publisher=1&SearchText=EV0702&SortString=ProjectCode&SortOrder=Asc&Paging=10#Description

    Rgds

    Damon
    • CommentAuthorRobL
    • CommentTimeJun 26th 2012
     
    Hi DH
    well, the boiler is off now as I've got the solar thermal going :-). I expect it'll have to go back on standby in a few months, to keep the "user experience" high :-(

    Being an electronics engineer, I could make a bye-bye standby type circuit that switches on the boiler on after "call for heat", and back off again 20 mins later to allow for pump over run or short cycling. Other than the effort involved, any reason why not to do it? prob £20 of components, and a "few" hours of tinkering.
    I appreciate that the anti frost won't work, but I really don't think that has/will ever be needed.

    Point taken about routers - we have one of them taking power all the time. Its hard to tell what our total standby load is, the Owl isn't accurate enough.
    • CommentAuthorSeret
    • CommentTimeJun 26th 2012
     
    Posted By: DamonHDToday's DEFRA/DECC/ETS report suggests ~£86/y per household wasted on standby, of which about £60 is modems and routers.


    You sure about that £60 figure? That's 50W continuous, which is a lotta router. I just looked through the Energy Saving Trust's wrapup and they do cite the £50-£86 standby figure but put modems and routers at a combined figure of 120kWh y-1.
    • CommentAuthorEd Davies
    • CommentTimeJun 26th 2012
     
    I have five routers (long story, one's bricked, only two are in day-to-day use). I think I've checked the consumption of all of them at one time or another and don't recall any consuming less than 5 or more than 10 W.

    120 kWh/y would correspond to 13.7 W which sounds very much like a reasonable average including people with multiple routers and people with cable modems, etc, whereas that £60 sounds too high.

    1 watt·year = (365.25 * 24 / 1000) = 8.788 kWh which costs £1 at 11.408p/kWh. So roughly a pound a year for every watt left on all the time.
    • CommentAuthorskyewright
    • CommentTimeJun 27th 2012 edited
     
    Posted By: Ed Davies...routers...checked the consumption of all of them at one time or another and don't recall any consuming less than 5 or more than 10 W.

    Similar findings here with 3 different routers tested.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJun 27th 2012
     
    Has anyone check what the transformer does without the router plugged in, seem to remember that mine was a combined 4-5W
    •  
      CommentAuthorSteamyTea
    • CommentTimeJun 27th 2012 edited
     
    Just checked, flicked between 0 and 1W, for just the transformer, between 3 and 4 during the start up, now between 5 and 6W.
    • CommentAuthorskyewright
    • CommentTimeJun 27th 2012
     
    Posted By: SteamyTeaHas anyone check what the transformer does without the router plugged in, seem to remember that mine was a combined 4-5W

    I've several times thought it would be nice to be able to run several such devices off a single small 12V transformer rather than having a 4 or 6 way extension with a row of 'wall-wart' transformers all producing 12V, and each one with its own overhead. The only things I've seen that do that have been 'homebrew' arrangements. Maybe there's a multi-lead transformer out there somewhere (at a reasonable price)? If so I've not come across it.
    • CommentAuthorRobL
    • CommentTimeJun 27th 2012
     
    The only thing I found which annoyingly refuses to work from a different psu is a radio linked IR remote extender. The original PSU is an old school unregulated 50Hz transformer one, which runs warm (Grrr). I think it's probably >12v, and the radio receiver is tuned to run with it.

    Yes, I know I should switch off at the mains.... It's almost like that at our house, we just use a few bye-bye standby thingies. We have 2 tellies, each controls the other "stuff" used with them:

    Telly upstairs is on a bye-bye standby thingummy, which switches off a 2way adapter. There's a 12v wall wart that gets switched off this way. The 12v powers the IR extender Xmitter upstairs and gets added to the aerial cable so it gets routed downstairs with the aerial(!), and this 12v powers the RF amplifier down there. It was intended to power the IR reciever too, just didn't work.

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