Difference between revisions of "Energy"

Revision as of 06:23, 26 February 2013

Energy can be saved through sharing appliances (for instance by using a beamer to watch film and television). Energy plays an important part in automation.

Energy generation

Centralized

Solar updraft tower ^[1]

+ Low maintenance cost.

+Uses greenhouses that can be used for agriculture.

-Takes in a relatively large amount of space.

-Solar has a variable output.

Solar power tower

+Desalinizes water.

+Contains a furnace (that can be used for melting iron for instance).

-Solar has a variable output.

Energy use

• Beamer

100-300 Watts. Can provide for +- 100 people. Per person: 2 Watt.^[2]

• Small led television

57 Watt. Per person: 14-57 Watt.^[3]

• Xbox

185 Watts ^[4]

• Wii

18 Watts^[5]

• Desktop (with peripherals):

60-250 Watts^[6]

• Laptop:

40 Watts^[7]

• Netbook:

16 Watts^[8]

• Tablet (Ipad2)

1-3 Watts ^[9]

• Iphone

Less than tablet^[10]

• Amplifier

40 Watts and up ^[11]

• DVD player

10 Watts and up

• Nanolight (100W equivalent, 30,000 hours)

12 Watts ^[12]

• Led lamp (50-60W equivalent, 50,000 hours)

6 Watts ^[13]

• Washing machine

0,81kwh/wash average 9 year average 500 EUR^[14] (If 10 people share one machine: 36 years = 200 EUR per person)

• Dishwasher

175 Kwh ^[15]

• Refrigerator

16 Watt ^[16]

Monetary cost

Solar updraft tower

Estimates of total costs range from 7 (for a 200 MW plant) and 21 (for a 5 MW plant) euro cents per kWh to 25-35 cents per kWh.^[17]

Capacity (guesstimate) 10 Watt x 10,000 = 100 MW

kwh per person 0,6 x 365 x 40 x 0,07 = 613 EUR out of total budget 7,000 EUR

0,9 x ... = 920 EUR

Highest kwh price: ... x 0,35 = 3,000 EUR

Average electricity use: ^[18] 5 x ... 4,800 EUR

Energy saved by replacing televisions and desktop computers by beamers and ipads seems to be a factor 10. Combining that with the lowest price comes to a favorable result (613 EUR / 7,000 EUR). This is all without heating and cooling, and a lot of other things.

Wikipedia states that wind costs 3 cent per kwh (100 MW). So if the costs turns out to be 25-35 per kWh, wind would be a better choice.

References