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EECE Seminar 1 &acirc;€“ Lecture 2

# EECE Seminar 1 &acirc;€“ Lecture 2 - EECE Seminar 1...

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rofessor Charles Westgate EECE Seminar 1 – Lecture 2 Professor Charles Westgate More on Solar Energy

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Outline of today’s lecture c Comment on questionnaire completed by students c Brief review of solar cells c Current-voltage characteristics and measurements c Power considerations c Solar cell systems c NYSERDA data c Design and cost of a practical photovoltaic system
Questionnaire c When asked about career plans, almost everyone is this course mentioned employment in an industry (after graduate school). c What is one step that you could take this semester to increase ur chances of success? your chances of success?

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Brief review of solar cells c Solar insolation c At sea level, a square meter of the earth’s surface receives 1000 watts (a watt is Joule/sec) c The typical efficiency of a solar cell is about 15%, thus in one hour, the maximum energy that can extracted from a 1 meter square solar cell is 150 watt-hour or 0.15 KWH. c To estimate the amount of energy that can fall in a day in a particular region of the United States, we can use the following Applet: c http://www.solarpanelsplus.com/solar-calculator/ c This displays the average solar energy incident in a particular zip code. For Binghamton, the average is: 3.53 KWH/day for a 1 meter square area. This must be multiplied by the efficiency of the cell. At 15% efficiency, the energy output is .53KWH/day.
c For a 1 meter square solar cell in Binghamton, the insolation is 3.53 KWH per day. For a 15% efficient cell, the energy produced is 0.53 KWH. In a 30 day period, the energy produced (on average) is 15.9 KWH. the average household uses 600 KWH per month, then 37 c If the average household uses 600 KWH per month, then 37 to 38 square meters of solar cells are needed to fully supply the home. c

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EECE Seminar 1 &acirc;€“ Lecture 2 - EECE Seminar 1...

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