Unlike air-to-liquid heat pumps commonly used, the “liquid-to-liquid” heat pumps used in our system make NO noise, which is essential in residential areas.
☹ This is contrary to the “air-to-liquid” system that has a fast-rotating noisy fan that pushes outdoor air into the heat pump and the heat pump extracts energy from the air.
😊The liquid-to-liquid system, however, has no moving parts, instead it has panels that contain solar cells AND liquid channels, allowing the liquid to absorb energy from the surrounding air. This energized liquid feeds the heat pump with continuous thermal energy. The electric power that runs the heat pump is provided by the solar cells of the PVT module. The same liquid circulates between the PVT panel and the heat pump.