Solar air heat

Solar air heating is a renewable energy heating technology used to heat or condition air for buildings or process heat applications. It is typically the most cost-effective out of all the solar technologies, especially in commercial and industrial applications, and it addresses the largest usage of building energy in heating climates, which is space heating and industrial process heating.

Solar air collectors can be divided into two categories:

• Unglazed Air Collectors or Transpired Solar Collector (used primarily to heat ambient air in commercial, industrial, agriculture and process applications)
• Glazed Solar Collectors (recirculating types that are usually used for space heating)

Solar collectors for air heat may be classified by their air distribution paths or by their materials, such as glazed or unglazed. For example:

• through-pass collectors
• front-pass
• back pass
• combination front and back pass collectors
• unglazed
• glazed