Thermodynamic solar panel

A thermodynamic solar panel is a type of air source heat pump. Instead of a large fan to take energy from the air, it has a flat plate collector. This means the system gains energy from the sun as well as the ambient air.^[1] Thermodynamic water heaters use a compressor to transfer the collected heat from the panel to the hot water system using refrigerant fluid that circulates in a closed cycle.^{[citation needed]}