Technologies are disclosed herein for a thin heat exchanger through which coolant may be pumped. The heat exchanger may include an envelope and a heat conduction layer provided over the envelope. The envelope may include one or more channels formed therein. The channels formed between the envelope and the conduction layer may extend the length of the heat exchange layer and be configured to carry coolant therethrough. The heat exchange layer may include an inlet manifold on a first end and an outlet manifold on another end opposing the first end. The inlet manifold may allow the flow of coolant into the heat exchange layer and the outlet manifold may allow the removal of the coolant from the heat exchange layer. Coolant flow may be controlled by a suction pump operating under computer control based at least in part on sensor data.

A cleaning system for a solar panel is provided. The cleaning system comprises: i) a frame moveable in a transverse direction over the solar panel, the frame having edges oriented in the transverse direction; a brush assembly positioned within the frame and moveable in a longitudinal direction including a plurality brush holders arranged within the frame, with each brush holder being adapted to interchangeably receive a brush for cleaning the solar panel; and a liquid spray arrangement including nozzles arranged one or more rows for spraying at least one of water and a water detergent mix onto the solar panel. The liquid spray arrangement includes nozzles positioned near at least one of the transverse edges of the frame for spraying the water detergent mix onto a longitudinal end of the brush assembly.

A device is provided. The device includes mechanically stacked layers. The mechanically stacked layers include a bottom layer and upper layers. Each upper layer includes a transmissive solar cell that converts light energy into electricity. Each upper layer transmits unconverted portions of the light energy towards the bottom layer. The bottom layer includes a solar cell that converts the unconverted portions of the light energy into electricity.

Substituting a solar concentrator for a conventional burner for heating is desirable. However, the sun's energy is diurnal and cannot be counted upon even during daylight hours. To ensure heating is available, a combustor can be provided. According to the present disclosure, a heat exchanger element of the heater assembly is directly acted upon by solar rays via a solar concentrator and by combustion. The heat exchanger also acts as the combustion holder when the burner supplements or supplants the solar radiation. Fuel provided to the outside of the heat exchanger is adjusted based on the demanded for heating and the amount of insolation (rate of delivery of solar radiation) achieved via the solar concentrator. The heat exchanger can be part of a conventional heater or a heat pump for heating water or air.

The solar power generating device according to the present invention comprises: solar cell modules disposed in a plurality of rows and columns; and an inclination control member for controlling the inclination angle of all the solar cell modules at a time, wherein the inclination control member comprises: a support part for supporting the solar cell modules; a control part, disposed on the support part, for controlling the inclination angle of the solar cell modules; and a driving part for driving the control part. In the solar power generating device according to an embodiment, the solar cell modules connected to the support unit can be vertically moved at one time by the inclination control member. In other words, the inclination control member can vertically control the plurality of solar cell modules, which are connected to the inclination control member, at a time according to the altitude of the sun so as to optimize the incident light.

The solar power generating device according to the present invention comprises: solar cell modules disposed in a plurality of rows and columns; and an inclination control member for controlling the inclination angle of all the solar cell modules at a time, wherein the inclination control member comprises: a support part for supporting the solar cell modules; a control part, disposed on the support part, for controlling the inclination angle of the solar cell modules; and a driving part for driving the control part. In the solar power generating device according to an embodiment, the solar cell modules connected to the support unit can be vertically moved at one time by the inclination control member. In other words, the inclination control member can vertically control the plurality of solar cell modules, which are connected to the inclination control member, at a time according to the altitude of the sun so as to optimize the incident light.

Water heater solar panel with collector heat exchanger and storage tank of water manufactured with plastic materials. This solar panel for heating water is manufactured with expanded polystyrene foam, glasses, a metal sheet and some plastic fittings. The collector of sun and water storage tank are assembled together, allowing the transfer of heat from the primary circuit to the secondary circuit without tubes, through a heat exchanger consisting of a metal sheet. The storage tank is integrated in the collector so that improves handling and lowers the cost in fluid transport and the manufacture of it. The weight of this panel is distributed regularly on the roof or deck.

A solar pump system comprises a solar module configured to generate DC power from sunlight, a water pump, an inverter configured to convert the DC power into AC power in order to drive the water pump, and a controller configured to generate a control signal for controlling an output frequency of the AC power. The controller compares the DC link voltage with a first reference level, adjusts the output frequency of the AC power, if the DC link voltage is greater than the first reference level, and determines the output frequency to prevent the DC link voltage from being equal to or less than a second reference level, if the DC link voltage is less than the first reference level.

A method for controlling the orientation of a single-axis solar tracker orientable about an axis of rotation, including observing the evolution over time of the cloud coverage above the solar tracker; determining the evolution over time of an optimum inclination angle of the solar tracker substantially corresponding to a maximum of solar radiation on the solar tracker, depending on the observed cloud coverage; predicting the future evolution of the cloud coverage based on the observed prior evolution of the cloud coverage; calculating the future evolution of the optimum inclination angle according to the prediction of the future evolution of the cloud coverage; servo-controlling the orientation of the solar tracker according to the prior evolution of the optimum inclination angle and depending on the future evolution of the optimum inclination angle.

A solar thermal collecting system, including at least one solar thermal collector and a pressure-adjusting module, is provided. The solar thermal collector includes a container, a light-transmissive cover that seals the container, and a plurality of solar thermal collecting pipes. The solar thermal collecting pipes are installed in the container, so as to allow a heat transfer material to flow therein. The outer surfaces of the solar thermal collecting pipes are correspondingly deposited with solar selective coatings for absorbing solar radiation energy, transforming the radiation energy into thermal energy, and transmitting thermal energy to the heat transfer material flowing in the solar thermal collecting pipes. The pressure-adjusting module controls the heat loss rate of the solar thermal collector by adjusting the air pressure inside the solar thermal collector and controlling the direction of air circulation to flow in or out of the solar thermal collector.