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Germany: Process Heat Supply from Vacuum Tubes and Air Collectors on the Rise

Submitted by Baerbel Epp on April 21, 2017
Process Heat StatisticsThere is a distinct difference between the make-up of the German solar process heat segment and the country’s solar thermal market in general and it concerns the type of collectors used. One in four collectors used in solar process heat systems is an air collector, although the technology contributes only around 10 % to the total collector area newly installed each year. The same has been true for vacuum tube systems, which showed a 35 % share in solar process heat installations among approved projects in 2016 – despite an overall market share of only 9 % last year. All figures are based on statistics provided by the University of Kassel’s Institute of Thermal Engineering, which has been in charge of the research accompanying the subsidy scheme on solar process heat under the auspices of Germany’s Market Rebate Programme for Renewable Energies or MAP.
Chart: solrico, source: Institute of Thermal Engineering, University of Kassel

GET Nord 2018, Hamburg

Submitted by Baerbel Epp on April 13, 2017
Sustainability, high energy efficiency, increased flexibility and safety are just a few of the requirements builders demand of modern constructions. GET Nord supplies the answers. From 22 to 24 November 2018 the trade fair in Hamburg will again become the most important meeting-place for the entire HVAC and electrical engineering industry in northern Europe. For tradespeople and also for the industrial sector, architects, planning offices and the housing industry.

ISH 2019, Frankfurt

Submitted by Baerbel Epp on April 12, 2017
The International trade fair for Bathroom, Building, Energy, Air-conditioning Technology and Renewable Energies ISH 2019 will take place from 12 to 16 March 2019 in Frankfurt/Main, Germany. ISH 2017 brought together 2,482 companies and welcomed more than 200,000 visitors.

IEA SHC Task 50: for Investors and Planners

Submitted by Baerbel Epp on April 6, 2017
IEA SHC Task 50A redesign of lighting systems in office or public buildings helps to save electricity and improve lighting quality, as the office building of the Austrian company Bartenbach on the photos shows. However, lighting systems are rarely upgraded: For example, in Germany, retrofits can only be found in 3 % of the existing building stock and 75 % of lighting systems are out of date, as they are older than 25 years. To support planners and investors in their decision on what would be the most apt lighting retrofit, the researchers of Task 50 of the IEA Solar Heating and Cooling Programme, Advanced Lighting Solutions for Retrofitting Buildings, have launched a website called and an app for Android and iOS devices. Both provide stakeholders with information about successful case studies of lighting retrofits in buildings, a database of technologies as well as tools, for example, to give direct onsite support for decision making, whether it is sensible to retrofit a lighting system. A webinar on 21 March explained all the services and features of the new website and app. A recording of it is available online.
Photos: Bartenbach

ISH in Germany: Easy Selling – Heating Industry Starts Digital Marketing Journey

Submitted by Baerbel Epp on April 5, 2017
Junkers ISH 2017Traditionally, the ISH has been the biannual forum for the European heating industry to showcase product innovations and new business strategies. The big five in Europe – Bosch Thermotechnik with its brands Buderus and Junkers, Viessmann, Vaillant, Ariston and its Elco brand, and BDR Thermea with its brands Remeha, Brötje and De Dietrich – welcomed tens of thousands of installers to the international five-day business-to-business fair in Frankfurt, Germany, at the beginning of March 2017. They chose two entirely different ways of presenting the new generation of heating solutions: Viessmann and Junkers focused on online marketing and sales, whereas Vaillant and Buderus favoured system integration. “Easy selling” reads the exhibition wall at the booth of Junkers (see photo), where the new online marketing tool was shown to attendees. 
Photo: Bärbel Epp

Europe: Comparing Solar Keymark Data on Collectors with Foil or Double Glass Cover to Ones Without

Submitted by Baerbel Epp on April 3, 2017
KBB large-scale collectorDenmark’s success story in solar district heating, with 2016 having been another record year which almost doubled newly installed collector area to around 500,000 m², showcases the large potential of this type of application across Europe. Cost cuts in the supply chain are key: Two vital factors are fast installation and less hydraulic work on site. The answer by manufacturers to these challenges has been to design large-scale prefabricated collectors. Suppliers of vacuum tube collectors offer modular designs for easy mounting of collectors above 10 m²; large flat plate versions come as one piece and certified by Solar Keymark. The yearly market surveys by German magazine Sonne Wind & Wärme show that the number of certified flat plate collector panels above 10 m² of gross collector area has increased in Europe in recent years. As of 29 March 2017, the magazine’s online collector database listed 62 models from eight brands compared to 20 types of collectors in October 2015.
Photo: KBB

Jordan: Four Demonstration Plants for Solar Air Conditioning Commissioned

Submitted by Baerbel Epp on March 29, 2017
Petra Guest House JordanJordan is showing rapidly increasing demand for air-conditioning. Total annual emissions from cooling commercial buildings add up to 600,000 tonnes of CO2, an amount equal to emissions from about 120,000 passenger vehicles per year. This has prompted the German Agency for International Cooperation to initiate the project Solar Cooling in Industry and Commerce in Jordan. The German Technische Universität Berlin (TUB) played a key role in this transfer of technology and know-how for the planning and installation as well as monitoring of four solar-driven air-conditioning systems in public and private buildings. The photo shows the 388 m² collector field which was commissioned at Petra Guest House in February 2015, around the same time as the one at German Jordanian University.
Photo: GIZ 

ISH Trade Fair: Not Much on Solar Heating

Submitted by Baerbel Epp on March 27, 2017
ISH 2017 Eva AugstenWith more than 200,000 visitors from 61 countries and 2,482 exhibitors, this year´s ISH trade fair in Frankfurt, Germany, set a new record. The biannual exhibition showed the latest trends in building and heating technologies, including renewable energy applications. During the one-hour press conference of the German heating industry association BDH, the world “solar” was not even mentioned once. Faced with decreasing interest in solar thermal across central Europe, the portfolio of the few exhibitors specialising in the technology included electric heating in one way or another. The photo shows a collector to regenerate boreholes which are connected to heat pump. 
Photo: Eva Augsten

USA: Commercial Systems Dominate Californian Solar Thermal Market

Submitted by Baerbel Epp on March 24, 2017
California Incentive ProgrammeThe California Solar Initiative (CSI) – Thermal Program seems to have stabilised at around 20,000 m² (or around 200,000 ft²) of subsidised collector area per year. Commercial applications dominate the statistics, although there was a spike in the share of residential systems in 2016. The peak in applications for commercial pool heating in 2014 was due to the late addition of this type of system to the state subsidy scheme. It took almost a year before the level of incentives and other requirements were set, so that all the applications piling up over that period had to be processed in 2014. The data in the chart was provided by the California Public Utilities Commission (CPUC) and shows the subsidised and installed collector area for each year.
Source: CPUC

Austria: New Medium-Temperature Collectors Show Remarkable Yield in District Heating Use

Submitted by Baerbel Epp on March 2, 2017
Graz Test Field SOLIDDuring the last seven years, a group of scientists has monitored selected large solar thermal installations in Austria on behalf of the Austrian Climate and Energy Fund. The gathered data confirms that these plants have been reliable and produce satisfactory yields. Particularly the new generation of large-scale medium-temperature collectors either with a foil or with a second glass cover shows remarkable results in district heating use. The 2,490 m² solar field (see photo) which has fed heat into the district heating network of Graz, Austria, reached a yield of 489 kWh/m². 
Photo: Thomas Eberhard


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