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

 

Delhi riots: City tense after Hindu-Muslim clashes leave 23 dead (26 Feb 2020)

 

Sydney baboons go on the run before vasectomy (26 Feb 2020)

 

Appeal for more funds to control locusts (26 Feb 2020)

 

Maria Sharapova retires: Five-time Grand Slam champion 'says goodbye' to tennis at 32 (26 Feb 2020)

 

Germany overturns ban on professionally assisted suicide (26 Feb 2020)

 

White Helmets appeal for help from world powers in Syria's Idlib (26 Feb 2020)

 

Hong Kong to give cash gift of ,200 to residents (26 Feb 2020)

 

Singer Duffy 'drugged, raped and held captive' (26 Feb 2020)

 

Weinstein's lawyer Donna Rotunno: 'The fight is not over' (26 Feb 2020)

 

Mario Cerciello Rega case: US students in Italian court over police murder (26 Feb 2020)

more »

 

SF Gate

 

As the startup boom deflates, tech is humbled (24 Feb 2020)

 

Dow drops more than 1,000 as outbreak threatens the economy (24 Feb 2020)

 

Ship traffic, February 25 (24 Feb 2020)

 

Can AI flag disease outbreaks faster than humans? Not quite (23 Feb 2020)

 

Ship traffic, February 23 (22 Feb 2020)

 

Firms encouraged to shift strategy after startup stage (22 Feb 2020)

more »


Site feed Updated: 2020-Feb-26 06:00