Abstract: A modular solar air heater comprises an extruded metal frame having fingers operable to secure a glazing, an absorber, and an insulating back sheet to the frame. The heater may also operate as a cooler. The heater further comprises an active air circulation system, such as a fan, which may be coupled with an air inlet of the heater. The heater has an air outlet and may further include a bypass channel to direct the airflow alternatively through one or both the bypass channel and the air outlet. A heating element and a cooling element may be coupled with the air outlet to further heat and also cool the air through the air outlet, respectively. A photovoltaic panel may be included to provide electrical power to the heater.

Abstract: A canopy for a vehicle, such as an electric bicycle, comprises a front assembly, a rear assembly, and a photovoltaic panel operative to charge the vehicle's batteries. The front and rear assemblies comprise struts which may be curved to make the canopy more aesthetic. The assemblies comprise struts which may be curved to any arbitrary shape such as circular or elliptical. The photovoltaic panel may be made from flexible material to accommodate the curved shape of the assemblies. The canopy may further include an output power controller to control the output power of the photovoltaic panel.

Abstract: A modular solar air heater comprises an extruded metal frame having fingers operable to secure a glazing, an absorber, and an insulating back sheet to the frame. The heater may also operate as a cooler. The heater further comprises an active air circulation system, such as a fan, which may be coupled with an air inlet of the heater. The heater has an air outlet and may further include a bypass channel to direct the airflow alternatively through one or both the bypass channel and the air outlet. A heating element and a cooling element may be coupled with the air outlet to further heat and also cool the air through the air outlet, respectively. A photovoltaic panel may be included to provide electrical power to the heater.

Abstract: A canopy for a vehicle, such as an electric bicycle, comprises a front assembly, a rear assembly, and a photovoltaic panel operative to charge the vehicle's batteries. The front and rear assemblies comprise struts which may be curved to make the canopy more aesthetic. The assemblies comprise struts which may be curved to any arbitrary shape such as circular or elliptical. The photovoltaic panel may be made from flexible material to accommodate the curved shape of the assemblies. The canopy may further include an output power controller to control the output power of the photovoltaic panel.