Calif. imposes battery charger energy standards
(AP) -- California will require cellphones, tablets and hundreds of other electronic devices to have energy-efficient battery chargers beginning next year.
Despite objections by consumer product makers, the California Energy Commission voted 3-0 on Thursday to regulate the power-sapping chargers that waste as much as 60 percent of the electricity they consume.
The Los Angeles Times reports the regulations are the nation's first to impose standards on chargers.
The standards target an estimated 170 million chargers described as "vampires" because they continuously draw power from the grid when plugged into the wall, even if no device is connected to the charger.
The regulations are expected to save enough electricity to power 350,000 homes. The commission says $306 million is expected to be shaved off residential and commercial electricity bills each year.
More information: http://www.latimes … 391528.story
©2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
-
From lemons to lemonade: Reaction uses carbon dioxide to make carbon-based semiconductor,
32 comments
-
Thioridazine kills cancer stem cells in human while avoiding toxic side-effects of conventional cancer treatments,
3 comments
-
SpaceX private rocket blasts off for space station (Update),
42 comments
-
Climate scientists say they have solved riddle of rising sea,
31 comments
-
SpaceX capsule has 'new car' smell, astronauts say (Update),
4 comments
-
Need a rigid insulation material???
23 hours ago
-
magnets or EMF in car bumpers to protect from fender bender
May 26, 2012
-
length of wire in a coil of known dimensions?
May 25, 2012
-
India Engineering Powerhouse
May 25, 2012
-
electromagnet core dereference between hard and soft iron
May 25, 2012
-
Measuring water pressure in an open tank
May 24, 2012
- More from Physics Forums - General Engineering
More news stories
Browser wars flare in mobile space
The browser wars are heating up again, but this time the fight is for dominance of the mobile Internet.
15 hours ago |
5 / 5 (2) |
3
Probability of contamination from severe nuclear reactor accidents is higher than expected: study
Catastrophic nuclear accidents such as the core meltdowns in Chernobyl and Fukushima are more likely to happen than previously assumed. Based on the operating hours of all civil nuclear reactors and the number ...
Technology / Energy & Green Tech
May 22, 2012 |
3.6 / 5 (25) |
56
|
HyperSolar shows dirty water no barrier to power world
(Phys.org) -- The Santa Barbara, California, company, HyperSolar, is set to transparently share the ups and downs of its research experiences toward the companys ultimate vision, successfully producing ...
SpotterRF debuts Radar Backpack Kit (w/ Video)
(Phys.org) -- SpotterRF has announced a special radar backpack kit designed to enhance situational awareness for soldiers on the ground. The company says its special radar is designed for warfighters as part ...
Tesla to launch electric sedan in US on June 22
Tesla Motors said Tuesday it would begin deliveries of "the world's first premium electric sedan" on June 22, slightly ahead of schedule.
Technology / Energy & Green Tech
May 22, 2012 |
4.5 / 5 (12) |
18
Stunning image of smallest possible five-ringed structure
Scientists have created and imaged the smallest possible five-ringed structure about 100,000 times thinner than a human hair and you'll probably recognise its shape.
'Unzipped' carbon nanotubes could help energize fuel cells, batteries
Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...
Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study
At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...
Computer model used to pinpoint prime materials for efficient carbon capture
When power plants begin capturing their carbon emissions to reduce greenhouse gases and to most in the electric power industry, it's a question of when, not if it will be an expensive undertaking.
T cells 'hunt' parasites like animal predators seek prey, study shows
By pairing an intimate knowledge of immune-system function with a deep understanding of statistical physics, a cross-disciplinary team at the University of Pennsylvania has arrived at a surprising finding: T cells use a movement ...
Land and sea species differ in climate change response: study
(Phys.org) -- Marine and terrestrial species will likely differ in their responses to climate warming, new research by Simon Fraser University and Australia’s University of Tasmania has found.
Jan 13, 2012
Rank: 1.9 / 5 (13)
Jan 13, 2012
Rank: 2 / 5 (12)
Jan 13, 2012
Rank: 2 / 5 (1)
The regulation of adapters doesn't affect the users, but producers of adapters. Their voltage and safety is already regulated, so why not the energy efficiency? And it's not about "weather", but about cost of energy. Where the people are using electricity for heating of their homes, there the heat dissipated from adapters doesn't increase the consumption of electricity, which is regulated with thermostats. California is not such a place.
Jan 13, 2012
Rank: 1 / 5 (1)
I guarantee the power adapters do not convert electricity to heat as efficiently as an actual electric heater does, and nowhere near as efficiently as other heating technologies.
Jan 13, 2012
Rank: 3.9 / 5 (11)
I have directly measured the power consumption of a random selection of these power converters in my home and have found that on average when powered off or on, they consume about 9 watts of power.
Even if a home has only 11 of these units, they represent a power draw of 2.4 kilowatt hours of electricity.
In the collapsing American nation, this translates nationally to the combined output of 4 nuclear reactors.
That 2.4 kilowatt hours of needless energy waste is also 32 percent of my current daily electricity use which currently stands at 7.5 kilowatt hours per day.
Jan 13, 2012
Rank: 3.5 / 5 (4)
Jan 13, 2012
Rank: 3 / 5 (4)
I'm not sure what you're asking, but electric heaters are specifically designed to produce heat. If anything, these power converters are designed to minimize heat production. Saying that it's okay to leave them plugged in and wasting energy because people have thermostats in their home so they contribute to heating the home and will equivalently reduce the use of normal heaters is ridiculous. They aren't designed to be heaters, I am sure they consume much more energy to produce the same amount of heat as a real heater.
Jan 13, 2012
Rank: 2 / 5 (9)
With the exception of a trivial amount of EM radiation, all electric heaters are 100% efficient.
PERIOD.
"They aren't designed to be heaters, I am sure they consume much more energy to produce the same amount of heat as a real heater." - Deathclock
Jan 13, 2012
Rank: 2.5 / 5 (2)
Internal electronic controls, LED lights, whatever how do I know we aren't talking about a SPECIFIC product but a type of product.
Jan 13, 2012
Rank: 3 / 5 (7)
Energy is always conserved so it doesn't go to Bananaland, although it might visit there for a figment of someone's imagination.
Hence no matter what the "enerty" is used for it is never used up, and ends up being degraded to heat.
You do remember grade 7 science don't you?
"Internal electronic controls, LED lights, whatever how do I know " - Deathclock
Jan 13, 2012
Rank: 3.7 / 5 (3)
No...
http://en.wikiped..._heating
Jan 13, 2012
Rank: 2.5 / 5 (10)
Now you are confusing electric consumption with electric generation.
Electric heaters convert 100% of the energy supplied to them to heat. Contrary to your earlier assertion, there are no practical losses.
Jan 13, 2012
Rank: 3 / 5 (3)
True, but I think non heat-pump electric heaters were implied here.
Jan 13, 2012
Rank: 1.5 / 5 (4)
Jan 13, 2012
Rank: 1.8 / 5 (8)
You place a heat pump in a room and you use it to pump heat into the room.
The result is a room that has more heat in it than it would have if the heat pump did nothing but convert the energy it used into heat.
I fail to see the problem?
Jan 13, 2012
Rank: 1.5 / 5 (2)
No...
Jan 13, 2012
Rank: 1 / 5 (2)
"The overall efficiency of any heating or cooling system is given by the Carnot cycle. While it is true that electrical heating loses little energy to other sources such as chemical reactions, as is the case with oil or gas heating, the system is limited by the temperature difference being created. A more detailed explanation can be found on thermodynamics or the Carnot cycle."
Contrary to your earlier assertions electronic heating is never 100% efficient, and the efficiency scales with the heat differential between the heating element and the environment being heated.
Jan 13, 2012
Rank: 1 / 5 (1)
A heat pump acts to simultaneously absorb heat from one environment and then release that excess heat into another environment. The amount of heat that can be absorb is proportional to the temperature differential between the environment itself and the medium of exchange.
Jan 13, 2012
Rank: 5 / 5 (3)
Anyways: these chargers produce heat at any time of day and night - summer or winter. So while one may argue that they help heat the home in winter they also make it necessary to use your AC even more during the summer.
This is a net waste (since AC is a lot more wasteful than heating)
Jan 13, 2012
Rank: 1.6 / 5 (7)
Lean some science doofus and then get back to us.
Jan 15, 2012
Rank: 5 / 5 (1)
Yes, the weather is that good. But mostly, I think it's the attempt to get as far away from red state lunatics that pushes people to the coasts. The reason people live along the coast of CA is because we haven't found an economical way to get a few miles further away from middle America. Once we perfect floating cities I'm sure we'll float ourselves out to sea.
Jan 16, 2012
Rank: 5 / 5 (1)