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Heat Storage

Development of a Solar Rating and Certification Laboratory in Minnesota (2009)

Submitted by Raquel Ponte Costa on March 19, 2015

This is a report prepared by the Minnesota Department of Commerce Office of Energy Security (OES) to the Legislature. It focuses on solar thermal technologies for domestic hot water and space heating. This legislation came about from concerns that the nationally recognized solar thermal certification organization, Solar Rating and Certification Corporation (SRCC), process was inadequately serving Minnesota’s solar thermal industry.

Heating Water with Solar Energy Costs Less at the Phoenix Federal Correctional Institution (2004)

Submitted by Raquel Ponte Costa on March 15, 2015

This report was released by the Energy Efficiency and Renewable Energy section of the U.S. Department of Energy in 2004. It highlights a large-scale solar thermal system installed at the Phoenix Federal Correctional Institution (FCI) and breaks down the statistical output.

Austria: Task 42 Meeting on Compact Thermal Energy Storage Systems

Submitted by Baerbel Epp on March 3, 2015
Task 42 MeetingIEA-SHC Task 42, entitled Compact Thermal Energy Storage, has entered into its final year and will end in December 2015. In February 2015, 44 scientists met for the 13th Experts Task Meeting in Vienna, Austria, to discuss the characterisation and development of materials for latent heat storage systems. This included phase change materials (PCM) like paraffin and thermo-chemical materials (TCM), such as sodium hydroxide solutions or zeolites. During the three-day meeting, the task members also visited the cogeneration plant Simmering in Vienna. The photo shows them in front of two pressurised water tanks with a total volume of 11,000 m3. The tanks are charged and discharged with 145 GWh annually and are operated to decouple heat energy production from demand in the district heating network of Vienna.
Photo: Institute for Solar Technology SPF 
 

Cost-Effective Use of Solar Energy in East African Horticulture (2013)

Submitted by Raquel Ponte Costa on March 3, 2015

This brochure was published by the Consortium Green Farming, which consists of 25 Dutch companies active in the horticulture technologies and provides support to development projects in East Africa.

India: First Solar Thermal Steam Storage for Cooking Applications

Submitted by Baerbel Epp on December 23, 2014
India Steam StorageThe Ramakrishna Mission Student’s Home in the city of Chennai, the capital of Tamil Nadu state on India’s southeast coast, is a combined residential high school and polytechnic college. It caters for around 700 orphan and poor students by providing free education, food and accommodation each year. The kitchen, which is supplied by Liquefied Petroleum Gas (LPG), has witnessed a sudden increase in costs because reductions in subsidies have led to rising energy prices. Hence, the mission’s management decided on a solar concentrating system in order to reduce LPG demand for cooking. The dish concentrator was installed three months ago. 
Photo: Clique Solar
 

Active Solar Thermal Energy Applications in Buildings (2014)

Submitted by Francesco Gattiglio on November 27, 2014

This presentation was prepared by Xavier Dubuisson and presented at the Yerevan State University of Architecture and Construction, in Armenia. The presentation is part of the Inogate Project, a regional energy cooperation programme between the European Union and 11 partner countries in Eastern Europe, Caucasus and Central Asia.

Guidelines for Determining the Tax Credit for Investing in Renewable Energy Property (2014)

Submitted by Francesco Gattiglio on October 7, 2014

This document provides information and guidelines on tax credits resulting from investing in renewable energies in North Carolina. It provides a legislative background of the issue dating back to 1999 as well as punctual information on credit ceilings, definitions, eligibility, requirements, frequently asked questions and tax credit amount for each type of renewable energy considered.

Denmark: 37 MW Field with 203,000 m³ Storage Underway

Submitted by Baerbel Epp on August 30, 2014
Vojens Seasonal StorageConstruction has begun on another large-scale installation: This time, the new number one solar thermal plant in the world will be in Vojens, a small town in southern Denmark, near the city of Kolding. The customer is Vojens District, which signed a contract with Danish collector manufacturer Arcon Solar this May about delivering and installing a 37 MWth collector field (52,491 m²). The 4,166 collectors will all be produced in Arcon´s factory in Aalborg. At present, the seasonal pit heat storage with 203,000 m³ is underway: Vojens District is uploading pictures once a month and the ones from August show the lining of the huge water-filled basin with high-density polyethylene foil (see photo). The currently largest solar thermal plant, a 26 MWth installation with 61,700 m³ of seasonal storage, is located in the Danish town of Dronninglund.
Photo: Vojens District
 

Denmark: Dronninglund Inaugurates 26 MWth Solar District Heating Plant

Submitted by Baerbel Epp on June 1, 2014
Dronninglund1The world’s currently largest solar district heating plant was inaugurated in Dronninglund, Denmark, on 2 May this year. The photo shows Carsten Møller Nielsen, Board Chairman at Dronninglund Fjernvarme, welcoming Rasmus Helveg Petersen, Danish Minister for Climate, Energy and Building (to the left of the speaker). The system consists of 2,982 collectors with a total solar thermal capacity of 26 MWth (37,573 m²) and a 61,700 m³ seasonal pit heat storage and is planned to provide about 15,000 MWh per year. Its output will meet half of the annual heat demand of the plant’s 1,350 customers. According to the local district heating supplier Dronninglund Fjernvarme, the total investment costs for the plant amounted to DKK 106 million (EUR 14.6 million), of which EUR 6.1 million were invested in the solar installation (see the chart below). The plant was subsidised by the Danish Energy Technology Development and Demonstration Program, EUDP, which supported the project with Danish Krone (DKK) 21 million (EUR 2.953 Mio). The payback period is said to be 25 years. Solarthermalworld.org spoke with Søren Elisiussen, CEO at Arcon Solar, which delivered the collectors and the support structure for the solar field, about the plant’s technical specifications.
Photo: Arcon Solar
 

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