French companies Boostheat and Dualsun and have teamed up with German heating system supplier Rathiotherm to launch the operational phase of the Sun Horizon project.
The European Commission supports the ambitious project under the Horizon 2020 (H2020) program. It is designed to demonstrate different ways to pair PV and PVT solar panels with heat pump technology for heating and cooling applications across several pilot sites around Europe.
Initially, the three companies installed heat pumps with solar energy system using hybrid panels on two homes in Riga, Latvia.
“Latvia has the highest gas grid penetration in Europe and has rolled out a large number of heat pumps throughout the country,” the consortium said. “The data collected may prove to be particularly informative due to the harshness of the winters there.”
A Boostheat heat pump will provide space heating and domestic hot water for the two homes, while the Dualsun panels will produce power for heating and domestic appliances. They will also generate as much heat as possible, with excess power to be injected into the grid. A cloud-based monitoring platform will evaluate performance data and key performance indicators.
The consortium also includes France's National Solar Energy Institute (INES) – a unit of the French Alternative Energies and Atomic Energy Commission (CEA) – and Schneider Electric. It has already developed five different designs for the coupling of heat pumps and solar panels, known as Technology Packages (TPs). Each design may include different technologies developed by the consortium's members.
The technologies are a gas-driven HP consisting of one or more thermal compressors in parallel developed by Boostheat, and a hybrid unit connected in parallel with a thermally driven adsorption chiller, using water (R718) as a refrigerant and a vapour compression manufactured by German specialist Fahrenheit. There are also two types of reversible brine-water and air-water heat pumps from Dutch supplier BDR Thermea Group, a high vacuum flat plate solar thermal technology developed by Switzerland's TPV Solar, Dualsun panels, and a thermal storage solution made by Germany-based Ratiotherm.
The first solution uses TVP solar collectors to cover most of the household's space heating and domestic hot water and a gas-driven heat pump to cover non-solar periods. With the second proposal, the thermal output of the PVT panels helps the evaporator and covers preheating of demand, which improves HP performance. PV will be used to cover power demand.
Via the third solution, the household's heating demand is covered by the PVT panels in winter. In the summer, PV output drives the adsorption chiller to meet the space cooling needs. Under the fourth approach, the heat pump benefits from the thermal and electric outputs of the PVT panels and is used as backup.
The fifth design includes solar panels, a storage tank, a hybrid chiller and a thermal heat pump. Hot water produced is produced by the solar module and is stored in the high stratification tank. The chilled water produced by the chiller is stored in a smaller tank and then delivered to the space cooling system. During the winter, the preheated water by the solar panels is delivered to the gas-driven heat pump. If necessary, it heats it up to cover space heating and domestic water demand.
The consortium is now testing all of the approaches at eight demonstration sites in Latvia, Germany, Spain, and Belgium.
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An excellent hybrid program that will be more effective in Central and Southern Europe.
The heat pumps can be an major tool in energy efficiency drive generating simultaneously heating & cooling energy. So focus shall be on developing high cop heat pumps run by renewables. The ultimate goal is to recycle energy. (Not a single joule of energy shall be wasted)
Glad to see this moving forward, but why not just incentivise home users to install residential PV systems, there isn’t any new tech here.
This approach has worked great in Australia, where residential PV has at times generated 33% of our grid’s generation. Couple this with what we call reverse-cycle air conditioners (heat-pumps) and what this consortium proposes has essentially existed for years?
This “Simultaneous” use of Hot-n-Cold of Heat Pumps has been “standing on the sidelines” for decades as almost 50% of the Energy in the Heat-or-Cold is.. wasted….
This is a commendable initiative to reduce Energy Consumption and Energy Waste.
With PV’s heading to 20% Efficiency and these Heat Pumps having a COP of 4.5/3.5 for Hot-n-Cold… the Overall, Energy Conversion / Efficiency becomes 160% [.20X(4.5+3.5)] … much much better than Solar Hot Water Systems with 75-80% Conversion Efficiency.. at best…
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