Quick Answer
Yes, solar energy can be used to supplement a wood heater by providing additional heat to the water or home, reducing the reliance on the wood heater and increasing overall efficiency.
Maximizing Solar Heat Gain
When combining solar energy with a wood heater, the goal is to maximize the use of solar heat gain during the day and store it for use during the evening or night. This can be achieved by using a well-insulated water tank with a capacity of 100-200 gallons, which can store solar-heated water for up to 8 hours. A solar thermal collector with a high efficiency rating (such as a evacuated tube collector) should be installed to maximize heat gain.
Supplementing the Wood Heater
To supplement the wood heater, a solar thermal system can be designed to provide supplementary heat to the water or home. This can be achieved by using a heat exchanger to transfer the solar-heated water to the wood heater’s water tank, or by using a radiant floor heating system to distribute the solar heat evenly throughout the home. A temperature control system can be installed to regulate the temperature and prevent overheating.
System Design Considerations
When designing a solar energy system to supplement a wood heater, several factors must be considered, including the size of the solar thermal collector, the capacity of the water tank, and the efficiency of the heat exchanger. A system efficiency of 50-70% can be achieved with proper design and installation. A monitoring system should also be installed to track the performance of the solar energy system and optimize its operation.
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