Build a Solar Updraft Tower

Here's how.

Active Time

30-45 minutes

Total Project Time

45 minutes to 1 hour

Key Concepts

solar energy, density, temperature, Greenhouse effect, Chimney/Stack effect

https://www.youtube.com/watch?v=rbhzoCb0xWM

Introduction

Have you ever had a sunburn? If so, you know how powerful the Sun's heat can be! Did you know that this heat can also be turned into electrical energy? You may have heard about solar cells, but what about a solar updraft tower? This very simple structure uses the sun to heat up air, which then powers a turbine within a large tower. In this activity, you will build one of these towers yourself. Do you think you can make a propeller spin with just hot air?

Credits

Svenja Lohner, PhD, Science Buddies

This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

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