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District Heating

Optimization of a Low Temperature Solar District Heating System by Integrating Space and Domestic Hot Water Loads (2014)

Submitted by Raquel Ponte Costa on February 27, 2015

This presentation on the optimization of a low temperature solar district heating system was given by Canmet ENERGY at the  2nd International Solar District Heating Conference in Hamburg in June 2014.  After a short introduction on Solar District Heating in Canada, the presentation focuses mainly on the only solar district heating site nationwide, named Drake Landing,  and shares information on its capacity, performances and technology.  The speaker also provides the results of a comparison study where domestic hot water is supplied by a standalone SDHW like th

The Value of Solar Heating and Cooling (SHC) in Minnesota: Solar Thermal and Minnesota Energy and Climate Goals (2013).

Submitted by Raquel Ponte Costa on February 13, 2015

This study on the value of solar heating and cooling, commissioned by the Minnesota Department of Commerce, analyses how solar thermal energy can help the state in reaching the climate and energy goals of reducing greenhouse gases emissions by 80% by 2050 and relying on renewable energy to produce 25% of electricity by 2025.

Denmark: New Arcon-Sunmark Focuses on Large-Scale Turnkey Installations

Submitted by Baerbel Epp on February 12, 2015
Sunmark VietnamDanish VKR Holding purchased collector manufacturer and turnkey system supplier Sunmark Solutions, also from Denmark, and incorporated the company into subsidiary Arcon Solar. The two firms have now merged to become Arcon-Sunmark, a direct subsidiary of VKR Holding and headquartered in Skørping in Northern Jutland, Torben Sørensen, Chairman of the Board of Arcon-Sunmark, says in a press release from 3 February 2015. Sørensen quit his job as CEO of Danish VKR subsidiary SolarCap, which was shut down and all its stakes divested in the course of 2014. Solarthermalworld.org has reported on the buyout of Sonnenkraft, as well as Greenonetec. The photo shows the Vietnamese collector production factory of Sunmark Solutions.
Photo: Sunmark Solutions

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
 

France: Third Solar District Heating Conference Call for Paper

Submitted by Baerbel Epp on January 3, 2015
BalmaAfter Denmark and Germany, it will now be France’s turn to host the Solar District Heating Conference. Researchers, as well as representatives from municipality utilities and solar thermal system suppliers will meet in Toulouse on 17 and 18 June 2015 to discuss international case studies, new business models and marketing strategies. The two-day event will consist of a mix of panel discussions, presentations by industry experts and site visits. In Toulouse, conference participants can visit the first French solar district heating plant, which is located in the eco-district of Balma and boasts 458 m² of vacuum tube collectors on a shade structure on top of a parking lot (see photo).
Photo: Viessmann/SDHplus
 

Building the Invisible Sun: Solar District Heating with Long-Term Thermal Energy Storage (2014)

Submitted by Francesco Gattiglio on December 12, 2014

This document on solar district heating (SDH) was presented by Adam Reed, research associate at the University of Colorado Boulder, at the Western Energy Policy Research Conference held in San Francisco on 4-5 September 2014.

Europe: Performance and Cost Comparisons of Larger Residential Solar Thermal Systems

Submitted by Baerbel Epp on December 2, 2014
As solar thermal installations have been a rare sight at Germany’s multi-family houses, the country’s Institute of New Energy Systems (InES) at the University of Applied Sciences in Ingolstadt took a closer look at Europe’s currently available larger solar thermal systems for domestic hot water and space heating. Daniel Beckenbauer, researcher at InES, counted 29 German collector installations above 100 m², as well as 47 systems in other European countries by surveying existing literature, web-based monitoring and other research programmes. Beckenbauer chose parameters such as solar share, investment costs and solar heat prices to compare these systems and to analyse the system designs offered on the market today. The chart above shows the monitored solar share based on the system’s specific storage volume. Because there are great differences in this volume between the surveyed projects, the x-axis has been divided logarithmically, spreading from 0.01 litre per MWh consumed heat per year (1E-05) to 100 m³ per MWh annually (1E+02).
Figures: Institute of New Energy Systems (InES)
 

Europe: Online Database on Large-Scale Solar Heating Plants

Submitted by Baerbel Epp on November 18, 2014
District Heating per CountryThe database on Europe’s largest solar heating plants, which can be found on the EU project SDHplus website, dates back to 1997. In the meantime, it has grown to 131 solar heating plants totalling a collector area of 586,000 m² (410 MWth). The first plants included in the database were installed in 1979. 124 of 131 systems are solar heating plants, most of them for district heating (particularly those in Denmark, Sweden, Germany, Austria, Poland and France), but also for large buildings, industrial use and other applications, whereas seven are cooling installations. The database contains "close to 100 % of all plants which have a minimum thermal output of 700 kW and started operating until the end of 2013,” says Jan-Olof Dalenbäck from the Chalmers University of Technology, who is in charge of updating the database as part of the SDHplus project. Eleven of these systems, with a joint output of 22 MW, have been shut down by now. The pie chart shows the installed collector area of district heating systems broken down by country.
Source: Database on SDHplus website
 

Austria: Solar Thermal to Breathe New Life into Vienna’s Urban Development

Submitted by Baerbel Epp on November 4, 2014
Congress Energy and ArchitectureBy 2050, Austria’s capital Vienna wants to cover half of its heat demand by solar thermal energy, it says in the Seven Energy Assumptions (Sieben Energiethesen) presentation, which was held by Bernd Vogl at the beginning of October. The photo shows the panel discussion during which Vogl, who is Head of the city’s Department for Energy Planning, MA 20, presented his assumptions (see the attached presentation in German) at a side event at the evening before the Fachkongress Energie-Architektur 2014 took place in Vienna.
Photo: Christian Fürthner, MA 20
 

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