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IEA Task 55: Solar District Heating Means Big Business

Submitted by Baerbel Epp on May 23, 2017
Task 55Solar district heating is attractive business. Not only does this become obvious when looking at the 347 MWth of newly installed SDH capacity in Denmark in 2016, but also when one hears about Big Solar, a 250 MWth collector field – with 1.8 million m² of seasonal storage – planned to cover 20 % of the energy demand in the Austrian city of Graz by 2020. It certainly explains the high interest in international research platform Towards the Integration of Large SHC Systems into DHC Networks, or Task 55 of the IEA Solar Heating and Cooling Programme. “We welcomed 33 participants from eight countries during our second project meeting in Aalborg in mid-March, and even had to limit the number of participants per company because of the huge demand,” explained Sabine Putz, Operating Agent of Task 55 and COO and Head of R&D at S.O.L.I.D.
Photo: AALBORG CSP
 

IEA SHC: How to Turn Historic Structures into Nearly Zero Energy Buildings

Submitted by Baerbel Epp on May 17, 2017
Villa CastelliMore than one-fourth of all residential buildings in Europe date from before 1945. Over the past decade, preservationists have taken to the idea of renovating historic structures in an energy-efficient manner. The planned IEA SHC task titled Deep Renovation of Historic Buildings Towards Lowest Possible Energy Demand and CO2 Emission intends to find the best solutions to this challenge. The photo shows the Villa Castelli at Lake Como in Italy. The energy requirements of the building have been reduced and the remaining demand has been met by a heat pump and PV-generated electricity. 
Photo: Oscar Stuffer, Solarraum
 

World Sustainable Energy Days 2018, Wels

Submitted by Baerbel Epp on April 13, 2017
The World Sustainable Energy Days (WSED), one of Europe’s largest annual conferences in this field, offer a unique combination of events on sustainable energy. The 2018 conference will take place from 28 February to 2 March 2018 in Wels/Austria. For more than 20 years, experts from all over the world have gathered in Upper Austria to attend the conference - in 2017, the event attracted more than 700 participants from 59 countries. The conference makes an important contribution to awarenessraising about renewable energy and energy efficiency.

IEA SHC Task 50: LightingRetrofitAdviser.com 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 www.lightingretrofitadviser.com 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
 

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
 

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
 

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: Picfly.at Thomas Eberhard
 

Russia: “I estimate the potential at 2 million m², half each for tourism and single-family homes”

Submitted by Baerbel Epp on January 31, 2017
Professor Vitaly ButuzovProfessor Vitaly A. Butuzov is one of Russia’s well-known experts on solar heating and cooling. He is professor at the Department of Electrical Engineering, Heat and Renewable Energy of Kuban State Agrarian University in Krasnodar, the capital of the region which bears its name. This region is one of the main economic centres in southern Russia. Additionally, Butuzov is Director of Krasnodar Power Technologies, which offers solar thermal systems in combination with geothermal units and energy efficiency projects. Solarthermalworld.org spoke with him about market development in Russia.
Photo taken from the website: http://www.c-o-k.ru/authors?id=1691
 

Denmark: New Solar District Heating World Record

Submitted by Baerbel Epp on January 26, 2017
SilkeborgThe Danish town of Silkeborg now holds the record for having the world’s largest solar heating system. The SDH plant of 156,694 m² (110 MWth) came online as scheduled in December 2016 after only seven months of construction. Municipal utility Silkeborg Forsyning intends to use the harnessed solar energy to meet 20 % of the annual heating demand of the 21,000 plant-connected users. The solar field was divided into four subfields to make it possible to set up the installation and hydraulics systems on this irregularly shaped piece of land (see photo). The former record holder is another installation in Denmark, in Vojens, boasting 70,000 m² (48.90 MWth) of installed solar thermal capacity. Both plants were turnkey deliveries from Danish collector manufacturer Arcon-Sunmark. 
Photo: Arcon-Sunmark
 

Austria: Tisun Sees Rising Interest in Solar Thermal in Gulf Region

Submitted by Baerbel Epp on January 24, 2017
Austrian collector manufacturer Tisun is currently the supplier for three major projects in Kuwait, Abu Dhabi and Qatar. Its subsidiary, Tisun GCC with two Dubai stakeholders, have been the ones helping the company enter the Arab markets. Since 2010, Tisun has had a local subsidiary in Dubai, Tisun GCC. Tisun’s first reference project in the region was a 500 m² solar field built in 2012 for a food-processing factory and it has opened many doors since.
 

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