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Aalborg CSP

Denmark: Concentrating Solar Collectors for District Heat in Northern Europe

Submitted by Baerbel Epp on August 11, 2017
BronderslevBrønderslev, a Danish municipality with a population of 12,500, is setting up a multi-purpose renewable heat plant for their district heating network. So far, local utility Brønderslev Forsyning has been operating seven gas-fired combined heat and power (CHP) plants and two gas boilers to produce 130 GWh of heat each year. In the future, most of the yearly district heating demand is planned to be met by a new Organic Rankine Cycle (ORC) unit which receives its energy from two wood chip boilers with 10 MW each and from a 16.6 MWth parabolic trough collector field with a mirror area of 27,000 m². 
Photo: Aalborg CSP
 

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
 

Denmark: Solar District Heating Capacity Nearly Doubles in 2016

Submitted by Baerbel Epp on April 25, 2017
District Heating in DenmarkLast year was a record-breaking one for new solar district heating (SDH) installations in Denmark. With 31 new SDH systems and 5 plant expansions, the newly installed collector area grew at double the rate of 2015 and totalled 495,226 m² (347 MWth). The year prior saw 15 plants built and three expanded, while collector area increased by 250,161 m² (175 MWth). Almost all plants newly installed or expanded in 2016 were equipped with flat plate collectors, except for the 18.9 MWth parabolic trough installation in Brønderslev. The annual statistic on SDH installations is maintained by Daniel Trier from Danish consultancy PlanEnergi and starts with the very first large SDH plant in 1988. Trier said that at the end of 2016, there had been 104 SDH plants in operation with a combined collector area of 1.3 million m² (911 MWth).
Chart: PlanEnergi
 

Australia: Good Funding for Solar Process Heat, but Little Trust by Industry

Submitted by Baerbel Epp on June 22, 2016
IRR rates for solar thermal in AustraliaAustralia’s energy policy has been in the international press mostly for its shift back toward coal under the former Prime Minister Tony Abbott. However, Jeremy Osborne, Director of Energy Analysis & Engineering, said in an interview with solarthermalworld.org that Australia did have a “supportive government despite all the news”.  Since July 2015, renewables for industrial processes has been one of the Australian Renewable Energy Agency’s (ARENA) investment priorities, which includes solar process heat. ARENA also published the report Renewable Energy Options for Australian Industrial Gas Users in September 2015, emphasising that lower-temperature process heat systems at around 100 °C are most “prospective at present” (see the attached document). Positive Internal Rates of Return (IRR) are achieved with gas prices above Australian Dollar (AUD) 5 per gigajoules (GJ). According to the report, the wholesale price for gas was between 6 and 8 AUD/GJ in 2014 and is expected to rise to between 9 and 12 AUD/GJ before the end of the decade. 
Chart: ARENA
 

Denmark: Solar Concentrating Systems to Offer Wide Array of Uses

Submitted by Baerbel Epp on June 20, 2016
Aalborg Tars InaugurationAt present, the Danish turnkey supplier of concentrating solar systems, Aalborg CSP, has two more large projects under construction. Both installations – one for Danish district heating company Brønderslev Forsyning and one for Australian vegetables producer Sundrop Farms – cover electricity and heat demand at their sites. Yet another first-of-its-kind project was inaugurated in August 2015 in the Danish village of Tårs (see photo), 30 km north of Aalborg. It entailed 4,039 m² of parabolic trough collectors and a preheating flat plate collector field of 5,972 m². Simulations have pointed to a 31 % coverage of annual heat demand even without seasonal storage, since overheating in summer can be avoided by moving the parabolic trough collectors out of focus. Aalborg CSP is an experienced planner of steam and boiler systems and has been offering concentrating solar solutions since 2007. 
Photo: Tårs
 

Denmark: Combined CSP and Flat Plate Collector System Supplies Solar District Heating

Submitted by Baerbel Epp on January 30, 2015
Solar District Heating Tars7 January 2015 was the starting date for the construction of a unique solar heat plant for district heating in the Danish village of Tårs, 30 km north of Aalborg. It combines parabolic trough collectors and flat plate collectors in order to cover 30 % of the heat demand by the village’s district heating network, without the need for seasonal storage. The system is expected to come into operation during the second quarter of 2015. 
Photo: Aalborg CSP
 

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