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Sweden: Multi-Family Buildings Use Low Return Temperatures to Optimise Solar Yield

Submitted by Baerbel Epp on November 26, 2013

A greater difference of supply and return temperature in a heating circuit increases the share of energy which can be utilised from a solar thermal system or another renewable energy source. With this in mind, Swedish company Alfa Laval developed the highly efficient heat interface unit called Mini City and the control device AlfaPilot. AlfaPilot is a control system, which gives priority to renewable sources within a heating system. The Mini City ensures the desired low return temperature. One project for which the systems were installed concerned the construction of two newly built multi-family houses, each with six flats, in Saint-Just-Saint-Rambert, France. Both buildings have been equipped with a solar thermal system. Since June 2013, Alfa Laval has been monitoring one of these multi-family homes.
Graphic: Alfa Laval

Italy: District Heating Sector shows great Interest in Solar Thermal

Submitted by Baerbel Epp on October 26, 2011

 Serrazzano, ItalyOn 29 and 30 September, the project partners of the EU project SDHtake-off met for a workshop during the GeoThermExpo in Ferrara, Italy. “All the big players in district heating in Italy joined our meeting,” project coordinator Thomas Pauschinger from German research centre Solites says. He sees that as an indicator for the growing interest of the district heating industry in solar thermal applications. The Italian town Serrazzano (Photo) might soon have a solar district heating system.
Photo: Geo Energy Service

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