My wood gasifier! It works! DIY. How to build it. Part 1

Introduction

This tutorial will guide you through the process of building a wood gasifier, as demonstrated in Todd Reuschel's video. A wood gasifier is a device that converts biomass, such as wood, into a combustible gas that can be used for energy. This guide will break down the essential steps, materials needed, and tips to ensure your wood gasifier works effectively.

Step 1: Gather Materials

To build your wood gasifier, you will need the following materials:

• Metal Containers: At least two different sizes, one for the gasification chamber and another for the collection chamber.
• Pipes: For gas transport.
• Grate: To hold the wood while allowing airflow underneath.
• Insulation Material: To retain heat and improve efficiency.
• Sealant: High-temperature resistant sealant to prevent gas leaks.
• Tools: Welding equipment, drill, and safety gear.

Practical Tips

• Choose materials that can withstand high temperatures.
• Ensure that the containers are airtight to maximize gas production.

Step 2: Construct the Gasification Chamber

The gasification chamber is where the biomass will be converted into gas.

1. Prepare the Base:

   • Use the larger metal container as the base.
   • Cut an opening for the grate at the bottom.

2. Install the Grate:

   • Place the grate inside the chamber securely.
   • Ensure there is enough space for airflow beneath the grate.

3. Add Insulation:

   • Insulate the outside of the gasification chamber to maintain high temperatures during operation.

Practical Advice

• Make sure the grate is sturdy enough to support the weight of the wood without collapsing.

Step 3: Create the Collection Chamber

The collection chamber is where the gas will accumulate after being produced.

1. Attach the Second Container:

   • Connect the smaller metal container to the gas exit of the gasification chamber using pipes.
   • Ensure a snug fit to prevent any gas leaks.

2. Seal Connections:

   • Use high-temperature sealant around the joints where the containers meet.
   • Allow the sealant to cure according to the manufacturer's instructions.

Common Pitfalls to Avoid

• Avoid using materials that can rust or degrade under high temperatures.
• Ensure all connections are airtight to prevent loss of gas.

Step 4: Test the Gasifier

Before using the gasifier for energy production, conduct a test to ensure it operates correctly.

1. Load the Chamber:

   • Fill the gasification chamber with dry wood or biomass.

2. Ignite the Biomass:

   • Start with a small fire to ignite the biomass.
   • Monitor the gas output through the collection chamber.

3. Check for Leaks:

   • Carefully inspect all joints and connections for any leaks.
   • Use soap and water to see if bubbles form at the joints.

Safety Precautions

• Always conduct tests in a well-ventilated area.
• Wear safety gear to protect against burns and other hazards.

Conclusion

Building a wood gasifier requires careful planning and execution, but with the right materials and steps, you can create an efficient energy source. Key points to remember include ensuring airtight connections, using heat-resistant materials, and testing for leaks. After successfully constructing your gasifier, consider experimenting with different biomass types and refining your design for better efficiency. Happy building!