摘要:
A system for solar assisted water heating provides hot water to a user at a lower cost, higher energy efficiency, and with a quicker response time than conventional systems, reducing energy losses, and improving user comfort. The basic architecture includes four main components: a solar collector, a heat exchanger, an in-line heater, and a control system. A transient heat profile of a first temperature in a primary loop is measured while a first flow generator G1 is active for the primary loop. Solar assisted heating of water in a secondary loop is provided based on: a flow of water in the secondary loop; a current first temperature; and the transient heat profile of the first temperature by activating: the first flow generator in the primary loop and an in-line water heater in the secondary loop.
摘要:
An apparatus and method for retrofitting existing solar collection panels with transparent thermal insulation facilitates upgrading existing conventional solar thermal panels with thermal insulation for the surface of the collection panel, with minimal effect on light transmission to the absorber. Use of a transparent thermal insulation panel improves the performance of an existing solar thermal panel, including, but not limited to increasing the output water temperature, operation at a lower level of solar radiation exposure, and reducing the minimum ambient operating temperature.
摘要:
It is provided a solar energy module for converting solar radiation to thermal energy. The module includes a thermally insulating element transmissive to solar radiation and having low transmissivity to thermal infra-red radiation, an absorbing element, a sealed enclosure, and a variable portion in the envelope of the sealed enclosure. This portion is adapted for varying the volume available to gas enclosed in the enclosure in accordance with changing temperature of the enclosed gas. Also, it is provided a solar energy module which includes a thermally insulating element, an absorbing surface and liquid pipes for absorbing the solar radiation, and an air duct thermally coupled thereof. The heated liquid and the heated air are usable for a variety of thermal applications. A heat storage may be thermally coupled to the absorbing surface and to the liquid pipes. The air duct has several air valves, and is associated with a controller for regulating air flow through the air duct. The controller may regulate heat flow in accordance with an optimization program, receiving inputs from several sources, like a sensor monitoring a building, a sensor monitoring the solar energy module, and an environment sensor.
摘要:
A system for solar assisted water heating provides hot water to a user at a lower cost, higher energy efficiency, and with a quicker response time than conventional systems, reducing energy losses, and improving user comfort. The basic architecture includes four main components: a solar collector, a heat exchanger, an in-line heater, and a control system. A transient heat profile of a first temperature in a primary loop is measured while a first flow generator G1 is active for the primary loop. Solar assisted heating of water in a secondary loop is provided based on: a flow of water in the secondary loop; a current first temperature; and the transient heat profile of the first temperature by activating: the first flow generator in the primary loop and an in-line water heater in the secondary loop.
摘要:
Insulated solar panels provide that provide a solar thermal collector with means for limiting stagnation temperatures and preventing damage include: temperature limiting is provided by the insulated solar panel, isolating internal components from the environment, using passive closed systems within the sealed solar thermal collector, while also allowing alternative implementations as active systems and/or portions of the temperature limiting system outside the sealed solar thermal collector. A heat pipe can be used as a passive thermal switch, where the temperature induced action at a predetermined temperature causes an abrupt transition from a state of thermal isolation to a state of strong thermal coupling. Additionally, a set of siphon circulation pipes provides a passive closed system for temperature limiting.