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Heat Storage

Germany: H.M. Heizkörper Plans to Mass-Produce Latent Heat Storage Units

Submitted by Baerbel Epp on May 13, 2014
ThermobatterieThe Thermobatterie (English: thermal battery), a latent heat storage unit by German manufacturer H.M. Heizkörper, makes it possible to absorb generated thermal energy and store up to two-thirds of it as latent heat without time restraints or heat losses. If required, the energy can later be released in suitable amounts and used in different application areas. The other third of the absorbed thermal energy will be stored conventionally as sensible heat, meaning heat that can be felt physically. solarthermalworld.org spoke with Project Manager Michael Sigwanz about the battery’s market potential and target groups and the advantages of a modular design. The photo shows the Thermobatterie in a single-family-house in Büttstedt, Germany. 
Photo: H.M. Heizkörper
 

SMEThermal 2014: “The challenge is the energy storage”

Submitted by Baerbel Epp on March 2, 2014
latent heat storageLarge storage capacity, modular design, high storage density and low heat losses: These are the current requirements for solar thermal heat storage. The result is that hot water storage products are often stretched to their limits. Alternatives could be phase change materials (PCMs) or thermo-chemical materials (TCMs). During the SMEThermal 2014 conference in Berlin, Dr Henner Kerskes, Research Associate at the Research and Testing Centre for Thermal Solar Systems, TZS, of the University of Stuttgart, Germany, and Monte C Magill, Business Development Director at US company Entropy Solutions, explained the design, operation and possibilities of latent heat and thermo-chemical energy storage solutions (see the attached documents).
Photos: Stephanie Banse
 

Germany: Icy Solar Heat Storage

Submitted by Baerbel Epp on January 21, 2014
German engineering company Ökoplan has built a 1,586 m³ ice storage in one of Hamburg’s residential areas to save solar heat from summer for winter. Parts of the heating system have already begun operating; the start of the ice storage is scheduled for October 2014. The chiller with a thermal output of 600 kW will then run like a heat pump to extract the heat from the water in the ice storage. The operation temperature of the storage is between +20 and 0°C, also including the latent heat which becomes available when the water freezes. The solar heat will be used to melt the huge ice block between April and October in order to regenerate the storage during summer. 
Photo: Ökoplan

Switzerland: New Factory for Large Storage Tanks

Submitted by Baerbel Epp on December 2, 2013

Swiss tank manufacturer Jenni Energietechnik is about to complete its new production line for large solar tanks in the Swiss town of Oberburg. The company invested Swiss Franc (CHF) 14 million in machinery and a four-storey building. The first tanks are said to leave the factory at the beginning of 2014. The expansion already started in the second half of 2011. Jenni plans to use the new production line to manufacture tanks between 700 litres and 200 m³. The photo shows the new multi-coil cutting machine that can process steel coils with a thickness of up to 6 mm. So far, the old line has only been able to cut steel coils of up to 3 mm. Thicker sheets had to be cut and transported to Oberburg from another company.
Photo: Jenni Energietechnik

India: New Five-Year Guarantee on Solar Tanks

Submitted by Baerbel Epp on December 2, 2013

Many Indian regions suffer from bad water quality: More than 75% of the country has moderately hard to very hard water. Chloride levels are also high in specific areas when water is obtained from boreholes. The “desired” legal chloride limit for drinking water is 0.25 g/litre, but is allowed to increase to 1 g /litre. As a result, solar thermal storage tanks gradually corrode and tend to develop leaks. Statistics obtained from the national Helpline show that over 70% of product-related complaints are about leakages in storage tanks. The photo shows a corroded extremely scaled hot water tank.
Photo: Jaideep Malaviya

Philippe Papillon speaks of INES' different Solar Thermal Energy Projects

Submitted by Raquel Ponte Costa on March 27, 2012

Interview with Philippe Papillon from INES, made during ESTEC 2011 conference in Marseille. Philippe speaks of his organisation's work on solar thermal energy. 30% of the 15-strong team's time is spent on system design and testing, with a main focus on auxiliary consumption and the reduction of cost of solar energy. They also work on component design, specifically targetting preliminary components as an effective way to reduce costs.

Technology Review and Selection of CSP and Desalination Configurations (2009)

Submitted by Raquel Ponte Costa on December 20, 2011

This Final Report is the deliverable of Work Package (WP1) from the MED-CSD Project. Designed to assess combined solar power and desalination plants’ technico-economic potential in Mediterranean Partner countries, it was a project funded by the European Commission under the 7th Framework Programme (FP7). It ran between June 2008 and June 2010.

Description of Simulation Tools used in Solar Cooling (2009)

Submitted by Raquel Ponte Costa on December 8, 2011

This technical report is a deliverable of Task 38, Subtask C within the framework of the International Energy Agency’s Solar Heating and Cooling Programme. It describes both existing and developing simulation tools and models used for solar cooling applications.

Case Study: Dairy Farmers Milk Free Energy (2009)

Submitted by Raquel Ponte Costa on November 7, 2011

This case study is the result of a partnership between New Zealand’s Energy Efficiency and Conservation Authority (EECA), the country’s dairy farmers and technical experts, showing the benefits of solar water heating and waste heat recovery systems used to reduce energy costs.

Europe: Solar Keymark Scheme Rules for concentrating solar collectors

Submitted by Baerbel Epp on November 6, 2011

 Solar Keymark Network MeetingDuring the meeting in Paris in October 2011, the Solar Keymark Network has accepted an extension of the Solar Keymark Scheme Rules. In the future, Solar Keymark will be available for both solar water heater stores and concentrating solar collectors. At the same meeting, the Solar Keymark Network has approved the new Annual Collector Energy Output Calculation Tool as a standard measuring tool for all Solar Keymark certified collectors. The energy output calculated with it can from now on be found on all Solar Keymark data sheets.
Photo: Henry Rosik

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