localzuk Posted February 22, 2011 Posted February 22, 2011 Just had a look on PaperCut and can see that around the school, 13 different laser printers have been left on. They use anywhere between 48W and 150W in 'standby' depending on their size. I just figured out, using 100W as an average for our devices, that this would equate to around £800 of electricity costs for those times. Does anyone have any ideas on how to remind people to do this? I could put timers on them I suppose, turning them off on weekends and overnight, but that leaves holidays.
SYNACK Posted February 22, 2011 Posted February 22, 2011 Wow, that is energy saving of you, I would probably look at the timers and then just manually get them over the holidays getting people to remember without serious pavlovian conditioning would be difficult. There again if you have a bell and a bunch of cakes it may be worth a go
Dos_Box Posted February 22, 2011 Posted February 22, 2011 (edited) I enjoyed driving past a local primary school during the xmas break to see a projector in a road facing classroom still switched on, all through the holidays you'd see a faint blue square in the evenings projected on to the whiteboard. Pehaps someone here could do a guide (using current electric prices) as to what equipment left switched on costs a school. We could turn it into a poster Then people could use it to bill departments who are too lazy to check wether kit is switched off at weekends or during the hols. Edited February 22, 2011 by Dos_Box
techie08 Posted February 22, 2011 Posted February 22, 2011 We just use the 6 way power adapters that uses one socket as a master which would be the PC and then the other 5 are slaves. When the pc shuts down, it kills the power to the other 2 dead. Then when the PC is powered back on, the slaves become live again. I think they are made by "PC Power Down" For Printers that dont have PCs in the room, then we just use timers.
localzuk Posted February 22, 2011 Author Posted February 22, 2011 We just use the 6 way power adapters that uses one socket as a master which would be the PC and then the other 5 are slaves. When the pc shuts down, it kills the power to the other 2 dead. Then when the PC is powered back on, the slaves become live again. I think they are made by "PC Power Down" For Printers that dont have PCs in the room, then we just use timers. Problem is, these printers are network printers in classrooms and offices, and all staff use laptops so there aren't PCs powering up and down.
techie08 Posted February 22, 2011 Posted February 22, 2011 For offices that have only printers in we just use timers. They Turn off at 8pm and back on again at 8am
SYNACK Posted February 22, 2011 Posted February 22, 2011 The Remote Power Switch - Remote Reboot Device http://www.zantech.com.au/power/reboot/iboot.html
MatthewL Posted February 22, 2011 Posted February 22, 2011 I would be interested at the cost for as a lot of TFT's get left on at our places.
webman Posted February 22, 2011 Posted February 22, 2011 We've just bought some timer sockets for all of our printers. Doesn't solve the holiday problem, but it will make a huge difference.
MatthewL Posted February 22, 2011 Posted February 22, 2011 Another way is to have computer only sockets located for these devices and have a number of switches where they can be powered off at rather than having to go around all rooms. I know this inst always practical and could be costly to install but worth looking at.
Little-Miss Posted February 22, 2011 Posted February 22, 2011 I find it quite funny how ive never thought about a timer before.....so do a lot of you use them?
john Posted February 22, 2011 Posted February 22, 2011 Have you all been reading my article in School Financial Management or did you all hide in the back of the conference in January I presented at in London as I covered this topic back then!
Butuz Posted February 23, 2011 Posted February 23, 2011 I just figured out, using 100W as an average for our devices, that this would equate to around £800 of electricity costs for those times. Whaaaa????? What printers have you got?? If your power figures are accurate then I suggest you sell them all on ebay now and buy some decent ones!!! 150w in standby is bonkers!!! I've measured a couple here and dont get any where near your figures: HP LaserJet 4250n (5 years old) gives: On and Ready: 15.5w Standby / Sleep: 9.3w Brother HL6050DN (2 years old) gives: On and Ready: 10.9w Standby / Sleep: 7.7w Are you sure your printers use 150w sleeping? Do they have a sleep mode that you need to enable?? Cheers Butuz
Domino Posted February 23, 2011 Posted February 23, 2011 We could turn it into a poster Turn your peripherals off or we'll chin ya -Love Edugeek
FreeWill Posted February 23, 2011 Posted February 23, 2011 To calculate the hourly cost of leaving devices on the following calculation is used: Power Consumption of device (W) / 1000 x Price per unit (p) = pence per hour e.g. if a projector used 200W of power and the cost of electricity was 10p per unit: 200 / 1000 x 10 = 2p
localzuk Posted February 23, 2011 Author Posted February 23, 2011 HP Laserjet CP3505n uses 42W (or 48W) depending on which stats you read (not tested these). We also have Ricoh Aficio MP7001 which from testing comes in around 150W. The MPC2800 we have uses about 100W also. When in use, those 2 overload my meter, as they draw so much power. Brother HL5250DN - 80W standby (according to specs). Epson CX-11 - 51W standby, 18W sleep. So, yeah, i'm working from those sort of figures.
rh91uk Posted February 23, 2011 Posted February 23, 2011 I've knocked up a quick script which emails them if they've left their computer logged in and also CC's IT Support. We will then beging to charge them for the amount they have wasted leaving their computer on!
Butuz Posted February 23, 2011 Posted February 23, 2011 Are you sure your measuring the watts in sleep mode on those? They seem incredibly high for the kind of sleeping that my printers do overnight / weekends / holidays. My Infotec ISC3030 uses 6.1 watts when it's sleeping and that is roughly the same size MFP as your Ricohs. But yes when it fires up it uses up to 1400 watts. Butuz
localzuk Posted February 23, 2011 Author Posted February 23, 2011 Are you sure your measuring the watts in sleep mode on those? They seem incredibly high for the kind of sleeping that my printers do overnight / weekends / holidays. My Infotec ISC3030 uses 6.1 watts when it's sleeping and that is roughly the same size MFP as your Ricohs. But yes when it fires up it uses up to 1400 watts. Yup. Absolutely sure. And as I said, on the others, i've been going by the values in their spec documents.
Butuz Posted February 23, 2011 Posted February 23, 2011 I’m not so sure mate I think your getting standby and sleep confused. Standby is what it uses whilst powered on and warmed up i.e when not actually printing or not in sleep mode(eg in between print jobs in an ICT class). Sleep mode is long term power saving mode that usually kicks in after half an hour or so of not being used, for evening / weekend etc and this is the figure you need to use in order to do your evening / weekend electricity cost calculations. E.g. you state your Brother HL5250DN uses 80w in standby but again standby is not sleep. According to the specs it uses 9w in Sleep mode, so it's this 9w figure you need to use in your calculations otherwise your costings in your first post will be way off. Same goes for all your other printers/MFP's. Hope this helps! Butuz 1
Edu-IT Posted February 23, 2011 Posted February 23, 2011 This is what ours show. How do they use electricity when they're off? I've knocked up a quick script which emails them if they've left their computer logged in and also CC's IT Support. We will then beging to charge them for the amount they have wasted leaving their computer on! Departments being charged?
rh91uk Posted February 23, 2011 Posted February 23, 2011 Yes, Departments will be charged a fine for the wasted electricity from leaving their computers on! 1
Butuz Posted February 23, 2011 Posted February 23, 2011 Yes, Departments will be charged a fine for the wasted electricity from leaving their computers on! I like that one!!!! Butuz
Butuz Posted February 23, 2011 Posted February 23, 2011 How do they use electricity when they're off? Many devices use small amounts of elecricity when turned off. E.g PC's use some energy to enable wake on LAN functionality and the like. Switching them off at the plug is the only way to ensure 0.0 watts. Butuz
Edu-IT Posted February 23, 2011 Posted February 23, 2011 I like that one!!!! Butuz Sounds an interesting ideas!
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now