Quote:
Originally Posted by freebeard
Moon Power™!
|
Capturing tidal and wave power adds up to much less than you think. MacKay has put forward an interesting unit of measure to bring the gigantic numbers like TeraWatts down to something we can relate to. He picked the UK to study and in 2006 when he started, it had a population of about 60 Million. He uses kWh per day per person as a unit. A 40W lightbulb left on is 1 kWh/ day. If everyone has 1 lightbulb on, that is 1 kWh/d per person. The world is currently using 17TW thermal continuous energy total. This is 55 kWh/d/p. And half the world lives in poverty and burns sticks for cooking and heat. The average western european uses 125 kWh/d/p. The UK is 200. The USA is 250 lightbulbs.
.
All of his calcultions were done to show the maximum of what would be possible regardless of the feasability of land area, cost, or raw materials. He calculated all of the available tide and wave power that could be captured ideally all the way around the British Isles at 20 kWh/d/p for the 60M people there. See slide 94 for the chaper on moon power.
.
http://www.withouthotair.com/cft.pdf
.
He had solar at 50kWh/d/p. This would take 200m^2 for every person. This would cover 10% of the land.
.
Deep offshore wind at 32. shallow offshore wind 16. Biomass with 75% of the land area utilized, 24 light bulbs.
.
See slide # 116.