Solar water heater has a higher conversion efficiency than photovoltaic power generation solar water heater, but its application is not widespread. In light-to-heat conversion, the solar water heater has the widest application range, the most mature technology, and the best economy.
Light and heat utilization: It collects solar radiant energy and converts it into heat energy through interaction with matter for use. At present, the most commonly used solar water heater collectors include three types: flat plate collectors, evacuated tube collectors, and focused collectors. Solar water heater power generation: The large-scale utilization of solar water heater in the future will be used to generate electricity. There are two main ways to use solar water heaters to generate electricity:
Photochemical utilization: This is a photo-chemical conversion method that uses solar radiation energy to directly decompose water to produce hydrogen.
Photobiological utilization: The process of converting solar water heaters into biomass through photosynthesis of plants. There are mainly fast-growing plants (such as firewood forests), oil crops and giant seaweeds.
