Commercial combined Solar and Pellet Heating Systems (2004)

Electrical heaters are often used as the auxiliary heat source for solar thermal heating systems, but the use of wood pellets in pellet stoves and pellet boilers is becoming more and more popular.

In Sweden, which is the most developed European market for pellet heating systems for one-and two-family houses, an estimated 30000 pellet heating units had already been installed by the end of 2001.

This article compares four typical combined solar and pellet heating systems: System 1 and 2 with a pellet stove, system 3 with a store integrated pellet burner and system 4 with a pellet boiler. The goal is to analyse, according to the solar thermal performance, the heat losses of each system.

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