Solar Photovoltaic (PV) panels generate electricity from the sun but lose energy to the surrounding area, they become inefficient when over-heated. What PV needs is a partner that can complement its strengths and compensate for its deficiencies – a partner called solar endothermic technology…
Minus7 is marrying these two technologies in its latest design making much more effective use of valuable roof space –optimising the output power per square metre than for a solar PV component alone.
The concept is appealingly simple.
In this happy relationship, solar PV cells are embedded into the solar endothermic roof planks. Cooled by contact with the solar endothermic roof tile planks to a more optimum operating temperature, cooling also protects the PV cells from damage due to overheating; In turn, the solar endothermic tile planks harvest the heat energy surrounding the PV planks that would otherwise be wasted.
The energy from the roof is processed by an energy processor and moved to thermal stores. The stores work as a battery for the heating and hot water needs of the building. A water-to-water heat pump within the processor upgrades the heat in the thermal stores as and when required. Already designed to harvest thermal energy day and night at temperatures as low as Minus 7 degrees Celsius, the latest innovation will go even further.
In providing both thermal and electrical forms of energy, this marriage of solar endothermic and PV technology results in a solar co-generation process that provides a zero net carbon solution with zero running costs in optimal installations. These two technologies are perfectly complementary, amounting to a power and conservation resource that can make a real difference to conventional energy requirements.
The Minus7 enriches the marriage between PV and solar endothermic technologies by using thermal storage and a water-to-water heat pump that simply upgrades the heat available in the thermal stores. As the stores provide energy to the house, the heat pump can run independently of demand and thus can choose when to run when electricity is cheapest.
As the PV is embedded into the tile planks there is no need for unsightly bolt-ons, and although the system requires both piping and cabling for thermal and electrical circuitry, it is no more bulky than a standard aluminium roof plank and can be used with conventional roofing methods. The improved exploitation of available solar energy, avoidance of competitions between the two technologies for roof space and the provision of both thermal and electrical energy means one thing – a hybrid that makes solar-derived renewable energy economically competitive with present conventional energy sources.
Minus7’s latest design is being launched at Stand E1240 at Ecobuild on 8th March 2016.
Register for your free tickets here: http://bit.ly/1QVRtv9