* Posts by David Lloyd

4 publicly visible posts • joined 21 Nov 2007

Air-slurping solar battery will slice energy costs – boffins

David Lloyd

probably too ambitious

Air breathing, or metal air batteries based on lithium are still very much a work in progress. The problem with building the battery in to the solar cell is that the battery temperature will fluctuate widely due to being out in the sun and the cold nights. This makes engineering the battery more expensive. Plus as already pointed out batteries don't last anywhere near as long as a solid state PV. It would nice to hear what their panels efficiency with regards to photoconversion is.

Lithium-ion battery beater to debut in 'major' laptop release

David Lloyd
Flame

LiS

Don't they operate somewhere above the 150 oC mark. A bit toasty no?

Mines the one with a smoking hole in the pocket...

David Lloyd
Thumb Up

I stand corrected re. LiS

They do operate at ambient. 350 Wh/kg vs. about 160 for lithium ion supposedly. Nice.

Drink rats' milk, suggests battling Heather Mills

David Lloyd
Boffin

Learn some basic science before making idiots of yourselves

The shocking ignorance of the people posting on this comment blows my mind. It wouldn't be so bad if it was the bbc website, but you muppets are supposed to know something about technology and therefore science.

You may have heard about this thing called energy. Fantastic stuff, you can use it to run machines like computers (finally, an IT angle to this otherwise mindless topic), cars or your body. Thermodynamics is the thing which tells you how it all fits together.

Now a decent animal body can convert energy with pretty poor efficiency. I believe a pig needs to consume about 7 times the food (energy) (not sure of that number, know it is > 2) you or I can extract from said pig when we eat it. Vegetarianism is about cutting out the middle man (or pig) and using the raw plant energy more efficiently, where possible. Fair enough to eat a sheep (or even better venison) from some beautiful Welsh or Scottish upland. What else were we going to do with the space? Some fish is even more efficient (just forget about farmed salmon, it's carnivorous). I approach this as a technical problem of efficiency, so flesh sourced from otherwise 'useless' space (from a farming or aquaculture perspective) is fine.

Yes, the population is too large. What in the name of Jobs are you going to do about it? If your answer is to reduce the population from 6 billion to 500 million before we see an ecological BSOD then you are talking about genocide! We or have to consume less farmed meat. Or else stop wasting energy running pointless websites where irate people can vent their frustrations. Oh wait a second... <click>