tungwaiyip.info

home

about me

links

Blog

< December 2011 >
SuMoTuWeThFrSa
     1 2 3
4 5 6 7 8 910
11121314151617
18192021222324
25262728293031

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Home Power Usage

I have bought the Kill A Watt meter a while back. I went on to measure every gadget and applicances I can possibly measure. Here is some result to share.

Wattage Appliance
0W Clock Radio 1
Stereo off
TV off
LCD monitor off
1-5W Fax machine standby
Mac Mini sleeping
Wifi router
Charging small gadget
Inkject printer idling
clock Radio 2
6-10W Stereo playing Radio
DSL Router
11-25W Stereo playing CD
Laptop 1
15" LCD monitor
Compact Florescence tube
Space header (fans only)
Mac Mini On (+8W when playing DVD)
Motorola Set-top box (use same amount of power whether on or off)
20-60W Core i5 laptop
  • 0-1W while sleeping
  • 6W recharging while sleeping
  • 20W when idle
  • Power use increase when charging other devices or running many applications
30W 10cu ft refrigerator (24 hour avg)
46W Water Boiler & Warmer (24 hour avg)
Compact refrigerator (24 hour avg)
70W 32" LCD TV
340W space heater (24 hour avg)

My main observation is the concern on power usage by electronic gadgets, and also the phantom watt issue, that is gadget continue to draw power when they are off, is largely overblown. Most sustain on just about 1 watt of power. The only rogue applicance is the set top box that uses 18W whether it is on or not. Even that is only 18W. In fact all the electronic gadgets added together does not match thw power usage of one space heater. This is evident in my skyrocketing winter power bill (or in hotter climate, the summer air conditioning cost).

Another interesting find. My new refrigerator uses 50% less electric than a much smaller but dated compact refrigerator. At this rate, it will actually come very close to the estimated annual electric cost of $38 that is posted in the tag in the store.

2011.12.24 [] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

Brett Kavanaugh: Embattled Trump nominee 'not going anywhere' (25 Sep 2018)

 

Rod Rosenstein: Russia inquiry chief set for Trump showdown (24 Sep 2018)

 

Electrical implant helps paralysed people to walk again (24 Sep 2018)

 

Dellen Millard killed father as he slept and inherited millions (24 Sep 2018)

 

Portuguese 400 year old shipwreck found off Cascais (24 Sep 2018)

 

Indiana school bus driver fired for letting kids drive (24 Sep 2018)

 

Weight Watchers drops 'weight' from name (24 Sep 2018)

 

Oil price jumps as Opec keeps output steady (24 Sep 2018)

 

S-300 missile system: Russia to upgrade Syrian air defences (24 Sep 2018)

 

Kenyan governor Okoth Obado charged over Otieno murder (24 Sep 2018)

more »

 

SF Gate

 

Why the gig economy may not be the workforce of the future (24 Sep 2018)

 

Telltale, San Rafael maker of video games, lays off most of its staff (24 Sep 2018)

 

Ship traffic, September 25 (24 Sep 2018)

 

Gilead facing doubts on Wall Street a year after billion Kite deal (24 Sep 2018)

 

Here are the celebs to look out for at this year's massive Dreamforce event (24 Sep 2018)

 

News site to investigate Big Tech, aided by Craigslist founder (24 Sep 2018)

more »


Site feed Updated: 2018-Sep-24 18:00