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Solar Thermal Energy in Delaware (2007)

Submitted by Raquel Ponte Costa on June 21, 2015

This presentation was created by the Delaware Million Solar Roofs Coalition, an association that advocates for the use of solar energy, renewable energy and energy efficiency.  The presentation was used to inform people in Delaware on the basics of solar thermal energy.

To begin, the differences between solar thermal technology and solar pv technology are looked at.  This includes the physical characteristics, economics of, and worldwide installed capacity.  Then the presentation examines the potential for solar thermal energy deployment in the state of Delaware.

Barriers to Technology Diffusion: the Case of Solar Thermal Technologies (2006)

Submitted by Hans Craen on March 27, 2009

This joint paper from the OECD and IEA (October 2006) looks into the different barriers that exist which prevent solar thermal technologies to deliver its real potential. Next to listing the barriers, the document also looks into means to overcome these, the existing technologies & markets and identifies best practices which can be used by policy makers in both industrialised and developing countries.

Three barriers to diffusion are analysed in more detail:

(1) Technical barriers,

(2) Economic barriers and

Ambitious Plans for Solar Thermal Technology in India

Submitted by Baerbel Epp on December 1, 2008

vacuum tubes in IndiaThe Indian market of vacuum tube collectors is picking up pace: Several manufacturers of flat plate collectors have started importing tube collectors from China. So far, they possess a market share of 10 to 15 %. Photo: Sudarshan Saur

Process Heat: the Solar Thermal Challenge of the Future

Submitted by Baerbel Epp on May 15, 2008

So far solar thermal technology is mostly used for domestic hot water, pool heating and room heating. It´s often forgotten that there is a huge demand for heat below 250 °C in industry, which can easily be reached with solar thermal collectors.

An international team of researchers working on behalf of the International Energy Agency estimated the realisable potential of solar process heat in the European Union at 100 GWth, which corresponds to 140 million m2 of collector area. T

Today, however, a solar thermal capacity of only 13.5 GWth is in operation across Europe. Task 33 of the International Energy Agency reported 85 solar process heat plants worldwide with a capacity of 27 MWth. However, this market segment seems to be waking up. Just recently, news about huge solar process heat installations did the rounds. There is the 13,000 m2 plant in Hangzhou, China, on the roof of the textile dyeing factory Daly Ltd., which is most probably the biggest installation for solar process heat in the world. The total investment adds up to RMB 12 million (€ 1.11 million) including the tanks and mounting system. According to the project developer, the Chinese company Shenzhen Quir Solar Technology Co., Ltd, the solar collectors will save RMB 3.38 million (€ 0.31 million) per year, so that the investment will pay off within 3 years. The hot water is provided at a low temperature of 55 °C. Secondly, this summer the German brewery Hofmühl GmbH in Eichstätt will start operating a pilot plant with 1,389 m2 of vacuum tube collectors, which will supply process heat between 90 and 140 °C to the brewing and cleaning processes. The owner of the system estimates a reduction of 20 % in the annual energy demand of the factory. The company is convinced that the investment will pay off and has plans for subsequent upsizing to 3,000 m2. The project is being subsidised by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.

What are the main topics for the future to open this new market sector?

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