How to Size an Air-Based Solar Thermal Heating System
In air-based systems, it's very important to plan for a collector array of the right size for your needs. It's a difficult calculation for inexperienced installers because you need to strike a balance between the collector output, the amount of thermal mass inside the building and the rate of heat loss from the structure. If you're unfamiliar with calculating thermal mass and heat loss, it's going to be even tougher.