You may want to experiment with different reflector shapes, or see what happens if you curve them. For example, you may want to test different reflector angles, or test what happens if the foil is more or less crinkled. Make sure to test different aspects of the designs individually before creating a final reflector design. But, you cannot test forever so as in all engineering projects, you have a time constraint, and when that time is up, your design will be tested as it is.Įach group has access to all the materials and tools needed to test their designs. In this design project, your team will test your designs many times to see if you can find a way to make your design a little better each time. We can do this by increasing the amount of solar radiation that hits the panel.Įngineers rarely make the best designs on their first try. PV panels are expensive, so it is important to maximize the amount of power each individual panel produces. Today, we're going to design, build and test small planar reflectors, and examine how reflecting and concentrating light onto a PV panel can help increase its power output. Throughout this unit, we have learned about the importance of maximizing the efficiency of photovoltaic panels and different ways engineers maximize power output. Ability to read data from charts, and record and graph data on scatter plots. Investigation Worksheet (pdf) Visit [ to print or download.įamiliarity with the material covered in the associated lesson and curricular unit. Note: The non-expendable items (mini PV panels, multimeters, wires with alligator clamps, lamp and light bulb) are reusable for the entire four-lesson unit, as well as other projects. paper and pencils, for drawing and sharing design ideas.(if not using the sun as light source) clamp or desk lamp with 100W incandescent bulb (~$8 best for each group to have their own, but teams can share if necessary).Investigation Worksheet, one per person.protractor (or use attached Protractor Printout, two per sheet, print out and cut apart).multimeter ($10 available online see the Solar Multimeter Source Information attachment in the Photovoltaic Efficiency unit) (experiment can be run with either one or two multimeters per group, see Procedure section for details).mini PV panel ($10-30 available online do a product search for "small solar panel" or see the Solar Panel Source Information attachment in the Photovoltaic Efficiency unit).Students will develop an understanding of the effects of technology on the environment.Įnergy resources can be renewable or nonrenewable.Īpply a broad range of making skills to their design process.ĭevelop a plan that incorporates knowledge from science, mathematics, and other disciplines to design or improve a technological product or system. Students will develop abilities to apply the design process. Students will develop an understanding of engineering design. Students will develop an understanding of the attributes of design. Analysis of costs and benefits is a critical aspect of decisions about technology. New technologies can have deep impacts on society and the environment, including some that were not anticipated. When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts. This activity focuses on the following Three Dimensional Learning aspects of NGSS:Įvaluate a solution to a complex real-world problem, based on scientific knowledge, student-generated sources of evidence, prioritized criteria, and tradeoff considerations.Īlignment agreement: Thanks for your feedback! Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts.Ĭlick to view other curriculum aligned to this Performance Expectation
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