Abstract: . . .  Assignments •• I’ll be out of town for next 5 days I’ll be out of town for next 5 days – Krista Adams will present lecture on Tuesday 05/11 – There will be a quiz, as usual, mostly on solar stuff – My office hours next week will not be at their regular Wed 2:30 time, but on Thursday at 11AM •• Homework #5: due Thursday 05/13 Homework #5: due Thursday 05/13 – Chapter 4 Problem 2, Multiple Choice 2, 6, 14, 16, 17 . . .
. . .  20 to 10 to 5 years •• Meanwhile, invest in PV: it’s sure to climb! Meanwhile, invest in PV: it’s sure to climb! Spring 2004 22 UCSD Physics 12 A less rosy picture: A less rosy picture: •• Photovoltaics Photovoltaics don’t last forever don’t last forever – useful life is about 30 years – damage from radiation, cosmic rays create crystal imperfections •• Some toxic chemicals used during production Some toxic . . .
. . .  lifetime – if this were true, PVs would be sunk •• A number of estimates calculate a current A number of estimates calculate a current payback payback of 3 of 3––4 years, expecting future 4 years, expecting future payback payback of 1 of 1––2 2 years years – Given 30 year lifetime, it’s still a winning proposition Spring 2004 24 UCSD Physics 12 Announcements & Assignments Announcements & Assignments •• I’ll . . .
. . .  – cheapest per Watt – called “thin film”, easily deposited on a wide range of surface types Spring 2004 18 UCSD Physics 12 Photovoltaic Photovoltaic production production Page 4 Our Photovoltaic Future May 6, 2004 Lecture 10 4 Spring 2004 19 UCSD Physics 12 Photovoltaic Photovoltaic production, continued production, continued Spring 2004 20 UCSD Physics 12 The rise of The rise of photovoltaics photovoltaics . . .
. . .  calculate a current payback payback of 3 of 3––4 years, expecting future 4 years, expecting future payback payback of 1 of 1––2 2 years years – Given 30 year lifetime, it’s still a winning proposition Spring 2004 24 UCSD Physics 12 Announcements & Assignments Announcements & Assignments •• I’ll be out of town for next 5 days I’ll be out of town for next 5 days – Krista Adams will present lecture on Tuesday 05/11 . . .
. . .  proposition Spring 2004 24 UCSD Physics 12 Announcements & Assignments Announcements & Assignments •• I’ll be out of town for next 5 days I’ll be out of town for next 5 days – Krista Adams will present lecture on Tuesday 05/11 – There will be a quiz, as usual, mostly on solar stuff – My office hours next week will not be at their regular Wed 2:30 time, but on Thursday at 11AM •• Homework #5: due Thursday . . .
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