sustainability - SUNY College of Environmental Science and Forestry

Sustainability 2011 , 3
2110

Figure 5. Energy gain over a 50 year period, for a 30 KW, 100 m long heater located at the

top of the reservoir and at a depth of 200 to 300 m.

Figure 6. Energy gain over a 5 year period, for a 30 Kw, 100 m long heater located at the

bottom of the reservoir, at a depth between 200 and 300 m, and at the top.

0

1

2

3

4

5

6

0 10 20 30 40 50

heater midway

heater at top

Time (years)

ENERGY GAIN

0

1

2

3

4

5

6

0 1 2 3 4 5

heater at bottom of reservoir

heater midway down reservoir

heater at top of reservoir

YEARS

Energy gain (Eout/Ein)

G