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Geothermal Power Plants, 4th Edition by Ronald DiPippo

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Appendix E

Answers to Selected Practice Problems

For every complex question, there is an easy answer—neat, simple and wrong.

H.L. Menchen

Chapter 1

1.1Thickness=19.6 km=12.25 mi.
1.2Temperature=1075°C, for 25°C surface temperature.
1.3Temperature difference=630°C.
1.4Depth=6.9 km.
1.5Depth=3790 m=12,500 ft.
1.10(a) Depth=4761 m.

Chapter 2

2.1(a) 14°F/100 ft; 25.5°C/100 m.
2.2(a) SiO2 (msl): (1) AH-1, 240°C; AH-5, 224°C; AH-26, 229°C. (2) H-4, 257°C; H-6, 246°C. (3) CP-avg., 263°C.
 (c) Na/K: (1) AH-1, 269°C; AH-5, 245°C; AH-26, 261°C. (2) H-4, 226°C; H-6, 221°C.
 (3) CP-avg., 292°C.
2.3(a) Temperature=230°C; (b) 251°C.
2.9(A) 125°C; fairly reliable. (B) 425°C; unreliable, too large an extrapolation.
2.12(A) (a) 265.3°C; (b) 254.2°C. (B) 690.0 ppm. (C) The ...

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