Solar updraft tower

Introduction

In this activity, students build a solar updraft tower model, which can generate electricity from low-temperature solar heat.The Sun, an immense powerhouse, bathes Earth in a vast amount of energy. Remarkably, within a mere 15 seconds, it delivers an amount of energy equivalent to what humanity utilizes in an entire day. This energy predominantly arrives as light and heat, making it an invaluable resource for various applications.
Over the past two centuries, the quest to harness the Sun’s energy has driven scientific research and innovation. This has led to the development of diverse solar power technologies. Today, we have at our disposal several methods for converting solar energy into electricity. These include photovoltaic cells, which directly convert sunlight into electricity, solar thermal collectors that harness heat from the Sun, and solar concentration systems that focus sunlight to produce heat or electricity.These advancements reflect human ingenuity in tapping into one of nature’s most abundant energy sources.

Objectives

 To understand the principles of solar thermal energy conversion,
throw-out a solar updraft tower.

Learning outcomes

By the end of this learning scenario, students will be able to:
• Explain the basic principles of how solar updraft towers work,
including the role of the greenhouse effect and the chimney effect in
their operation.
• Describe the process of converting solar energy into mechanical and
then electrical energy using the solar updraft tower model.
• Discuss the potential environmental benefits of using solar updraft
towers as a renewable energy source.
• Apply principles of physics and environmental science to a realworld problem, demonstrating an understanding of energy
conversion and sustainability.