Cooling and Heating

Cooling

Refrigeration Maintenance

1. Maintaining Commercial Refrigeration

How to Make Cooling Systems

1. How to Build an Air Conditioning
2. How to Make a Desert Fridge
3. How to Make a Dry Well
4. How to Make a Low Cost Cooling System for Bottles and Jar
5. Refrigeration for Developing Countries

Insulation

1. Heat Insulation with Cardboard
2. Heat Insulation with Cotton
3. Heat Insulation with Paper
4. Heat Insulation with Wool
5. Insulation Materials

Heating

Use of the Sun

1. Heating with the Sun

Use of Biomass

1. Heating with Wood
2. How to Build an Efficient Wood Oven

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