Intro to Photovoltaics Technological Design. What is Power? Rate at which energy is delivered Power = Energy Time Measured in Watts (W), kilowatts (kW),

Slides:



Advertisements
Similar presentations
Photovoltaic Solar Energy
Advertisements

Lesson 12 Insolation Hess, McKnight’s Physical Geography, 10 ed. pp. 70, 80-84, and Fig on p. 78.
…the movement of charge between varying locations and the corresponding loss and gain of energy which accompanies this movement. Unit 4 - Electric Circuits…
Introduction Since the beginning of the oil crises, which remarkably influenced power development programs all over the world, massive technological and.
16-1 Energy in Earth’s Atmosphere. (pages 542–545) 1
1. Try to produce a flow chart from the text I read to you 2. Look at pages 208 to 209 of David Waugh and answer the following; a) Describe how the.
EE580 – Solar Cells Todd J. Kaiser
Handout (yellow) Solar Energy and the Atmosphere Standard 3 Objective 1 Indicators a, b, and c Standard 3 Objectives 1, 2, and 3 Workbook Pages 3,
Copyright 2009 Hal Aronson BASIC ELECTRICITY for PVs Part One: Volts, Amps, Watts Series and Parallel Wiring.
Sun-Earth relationships Array Orientation Solar Radiation Data Sheets
Lesson 25: Solar Panels and Economics of Solar Power
THE PROCESS OF DESIGNING A PV SYSTEM
Renewable Energy..!! * Solar energy..!!. About solar energy Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient.
Power and Energy. Power Power means work over a time period Units = Watts Electric power is measured in Watts.
Electricity Compare AC and DC electrical current and understand their important differences Explain the relationship between volts, amps, amp-hour, watts,
Measuring Electrical Energy Lesson 11. Measuring Electrical Energy What is Energy? Energy- The ability to do work Electrical Energy- The energy transferred.
Estimating solar energy requirements to meet U.S. energy needs: an outreach event Daniel Esposito, 1 Vernon Alt 2 1 Columbia University 2 Northrup Grumman.
Electric Power, AC, and DC Electricity
Test Review Chapter 16 and 17. Major Concepts - Circuits -Parallel vs Series -How to determine current, voltage, resistance and the definition of each.
Solar Energy Station Directions. Making a Solar-Powered Circuit 1.Make sure your solar panel is in direct sun. 2.Get the clear LED bulb. 3.Use a red jumper.
Circuits & Electronics
Circuits. Reviewing terms Series and Parallel Circuits Key Question: How do series and parallel circuits work?
Wind and Hydro Power Technologies Spring 2011.
Electricity Basic Terms #1 John Jones. Ampere – rate of electrical flow (volume of electricity flowing) Sometimes referred to as amps.
Solar Radiation 1367 W/m2 this is called the solar constant
Current Electricity. Producing Current Current: Flow of charged particles Cell: Source of conversion of chemicals into electric energy. Types of Cells:
Current “You’ll get a charge out of this”. Current is measured in Amperes(amps or A) 1 amp = rate of flow such that 1C of charge moves past a point in.
Cells, Modules, & Arrays. Types of PV Cells/Products Single Crystal Multi or Polycrystalline Thin Film /Amorphous Silicon.
Solar Photovoltaic
Photovoltaic (fo-to-vol-ta-ik) systems are solar systems that produce electricity directly from sunlight. The term "photo" comes from the Greek "phos,"
Measurements in Electric Circuits Gr. 9 Electricity Unit.
Final Exam Review Current, Power, Voltage, Resistance Ohm’s Law Series & Parallel Circuits Electromagnetic Induction.
Electrical power. Objectives Use the equation for electrical power to solve circuit problems. Understand basic concepts for home electricity usage and.
Power Generation from Renewable Energy Sources Fall 2013 Instructor: Xiaodong Chu : Office Tel.:
Red Rocks Community College ENY 130 Grid-Tied PV Fall 2009 Module 2.
Physical Science Mr. Barry. Series circuits have one loop through which current can flow.
Sustainability Solar Power Sustainability Solar power.
Parallel Circuit A parallel circuit is one that has two or more paths for the electricity to flow – similar to a fork in a river A parallel circuit is.
S OLAR R ADIATION. R ADIATION Sun is a sphere of hot gaseous matter with a diameter of 1.39*10^9m. Due to its temperature, sun emits energy in the form.
Electrical Circuits Chapter 20 Section Three. Science Journal Entry #42 Expound upon Ohm’s Law and its relationship to current, resistance, and voltage.
Electrical power pg. 49. Objectives Use the equation for electrical power to solve circuit problems. Understand basic concepts for home electricity usage.
Power and Energy Consumption: State and National Perspective Created for: Illinois Math & Science Partnerships Energy Workshop 7/8/2013.
By Aaron Le Conte. We would still be left with 5562 Terawatts of power, from the sun, that could be used. This is equal to 370 times the amount of energy.
Power in Electrical Systems Power in Electrical Systems.
Circuits. Reviewing terms Circuits need 3 basic parts: An Energy Source Load (Power demand) Wires.
Circuits. Reviewing terms The Electric Force and the Electric Field The force between charged objects is an electric force. An electric field is the.
PV System Design and Installation LO3 Electricity Basics.
Electrical Basics Power & Ohm’s Law.
Photovoltaic and Battery Primer
Photovoltaic and Battery Primer
Cells, Modules, & Arrays.
Electricity Basic Terms #1.
Electrical power pg. 49 This lesson defines electric power and examines household electrical systems and power usage. Students learn how power is related.
Electrical Systems Series Circuits Parallel Circuits Electrical Power.
Electric Power Energy Cost
Basic Terms #1 John Jones
Solar Energy and the Atmosphere
Photovoltaic cell energy output:
Energy Nuclear Fission Nuclear Fusion
Energy Budget Subtitle.
Power.
Bell Ringer Looking at Lunar phases, what is a waxing crescent?
BIG electricity Review
The Cost of Electrical Energy
7.1 Insolation Unit 7: Climate April 14, 2012 Sanders.
Notes 7.3 : Calculating Electric Power + Electrical Energy
Sources of Electricity
20.1 Short circuit A short circuit is a parallel path in a circuit with zero or very low resistance. Short circuits can be made accidentally by connecting.
Earth, Sun Chemistry.
Renewable Energy.
Presentation transcript:

Intro to Photovoltaics Technological Design

What is Power? Rate at which energy is delivered Power = Energy Time Measured in Watts (W), kilowatts (kW), or horsepower (HP) Power is an instantaneous quantity Power does not accumulate Think gallons per minute

What is Energy? Ability to do work Often measured in kilowatt  Hours (kWh) Since Power = Energy/Time, Then Power  Time = Energy Energy does accumulates over time Think gallons Gallons = (gallons/min)  minutes

Power Power is the rate at which energy is being delivered or consumed Power = (Current)(Voltage) P = IV Units: Watt (W) So if 2 A of current is flowing through a load at 120 V, the Power used by the load is P = IV = (2A)(120V) = 240 W

How much electricity do you use per month? The average household uses 1,200 kWh per month (NREL.gov) WWHS main building uses 17,500 kWh per month ~ $3500 power bill What is the daily usage? kWh per day ~ $ per day

Enormous nuclear reactor. Source of energy is “hydrogen burning” Approx 1 / 2,000,000,000 of Sun’s emitted energy reaches Earth Power that reaches Earth is approx. 15,000 times our total consumption Energy delivered in the form of electromagnetic radiation Electromagnetic radiation: Oscillating electric and magnetic fields: WAVES The Sun

Solar Radiation is: 49% infrared (animals and NVG’s see this) 46% visible (what you see) 5% ultraviolet (sun burns)

Radiation Types Direct-beam Radiation: Radiation that has NOT been scattered. Is traveling directly from Sun. Diffuse Radiation: Radiation that has been scattered, and isn’t traveling directly from Sun. Why important? Flat-Plate collectors harvest only direct-beam, not diffuse radiation! Concentrating collectors – ones that use focusing mirrors – only harvest direct-beam radiation

Solar Constant (S): Amount of solar energy that reaches the upper atmosphere of the Earth per area per time S = 1,370 W/m 2 Solar Constant is independent of Earth’s tilt, cloud cover, etc… Solar Irradiance: How much solar energy reaches the Earth’s surface Varies with season, time, cloud cover, … Irradiance at which PV panels are rated is 1,000 W/m 2, called “1 sun” Definitions

Quantify We’re usually interested in how much ENERGY reaches (and is collected by) our module each day! Energy = Power  Time Unit: kWhr/m 2 /day This quantity is called solar insolation

Sizing? Series and parallel are the same as batteries For off-grid systems, you must calculate total energy used during highest month in order to size appropriately For grid-tied system, you must use tie to the grid and trade energy when needed. How much energy from a PV panel do we need for the daily average energy usage? (Use the numbers we used previously for daily average and average solar insulation in Wilkes county)

How about solar-powered vehicles? Limited by space Limits available power Result?

How about solar charged EV? Average vehicle is only used for 30 miles a day. Why not charge while parked in the sun?

Experimentation Procedure Working in teams of two, use a multimeter to measure the voltage and amperage of two solar panels individually, in series, and in parallel. Part One: Measure and write down the voltage and amperage of each solar panel by themselves in your EDJ Part Two: Wire the solar panels in series and write down the voltage and amperage in your EDJ Part Three: Wire the solar panels in parallel and write down the voltage and amperage in your EDJ

Questions for your Journal Write out these questions in your journal: Current (Amperage): Compare the current in Parts 2 and 3 with the current measured in Part 1. How much did the current change in each case? (Compare all thee parts) How do you connect cells to obtain a higher current output? Voltage (Volts): Compare the voltage from Parts 2 and 3 with the voltage measured in part 1. How much did the voltage change in each case? How do you connect cells to obtain a higher voltage output? Extra* - Take your solar panel outside and keep it hooked to the multimeter, place your finger over one corner of the solar panel. What happened to the voltage? Why?