EES 0837 Lecture Notes - Lecture 36: Kilowatt Hour
3 Apr 2016
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Lecture - 36: power towers, who needs a parabola, you can cheat on the parabola somewhat by adopting a steerable-segment approach. Each flat segment reflects (but does not itself focus) sunlight onto some target. Makes mirrors cheap (flat, low-quality: many coordinated reflectors putting light on the same target can yield very high concentrations. 1983 13. 8 mw plant cost per peak watt: 25% efficient, about 25 cents per kwh. 1991 plant cost per peak watt: 8 cents per kwh. Solar one in nevada cost million, produces 75 mw in full sun, and produces 134 million kwh/year: so about . 50 per peak watt, 10 cents/kwh over 20 years, california dominated world for csp (354 mw) Dry air may yield 1000 w/m2 in direct sun. This means suppressing other channels of heat flow: double-pane glass. Cuts conduction of heat (from hot air behind) in half. Provides a buffer against radiative losses (the pane heats up by absorbing.
