PDF Publication Title:
Text from PDF Page: 008
Sensible Thermal Energy Storage – The use of hot water tanks is a well- known technology for thermal energy storage [2]. Hot water tanks serve the purpose of energy saving in water heating systems based on solar energy and in co-generation (i.e. heat and power) energy supply systems. State-of- the-art projects [3] have shown that water tank storage is a cost-effective storage option and that its efficiency can be further improved by ensuring an optimal water stratification in the tank and highly effective thermal insulation. Today’s R&D activities focus, for example, on evacuated super-insulation with a thermal loss rate of = 0,01 W/mK at 90°C and 0,1 mbar and on optimised system integration. Hot water storage systems used as a buffer storage for domestic hot water (DHW) supply are usually in the range of 500l to several m3. This technology is also used in solar thermal installations for DHW combined with building heating systems (Solar-Combi-Systems). Large hot water tanks are used for seasonal storage of solar thermal heat in combination with small district heating systems. These systems can have a volume up to several thousand cubic meters (m3). Charging temperatures are in the range of 80-90°C. The usable temperature difference can be enhanced by the use of heat pumps for discharging (down to temperatures around 10 °C). For example (Figure 1), the solar district heating “Am Ackermann-bogen” (Munich, Germany) supplies solar energy for space heating and domestic hot water for about 320 apartments in 12 multi-story dwellings with about 30,400 m2 of living area. The system is designed to cover more than 50% of the annual heat demand (i.e. about 2,000 MWh/a) using solar energy col- lected by 2,761 m2 of flat-plate collectors. The heat collected is used either directly or stored in a 6,000 m3 underground seasonal hot water storage. Supplementary heating is provided by an absorption heat pump driven by the city district heating system using the seasonal storage as a low tempera- ture heat reservoir. This allows for a wide operation temperature range of the storage (i.e. between 10-90°C). Direct connection of the district system and heating installations in the houses avoids typical temperature drops at heat exchangers and increases the temperature spread. The district system is operated at a supply temperature of 60°C with a return temperature of 30°C, which is properly monitored. The solar energy fraction in the second year of operation was 45% and could reach values above 50% after further optimisation [4]. Underground Thermal Energy Storage (UTES) – UTES is also a widely used storage technology, which makes use of the underground as a storage medium for both heat and cold storage. UTES technologies include borehole 6 Thermal Energy Storage | Technology BriefPDF Image | ENERGY TECHNOLOGY SYSTEMS ANALYSIS
PDF Search Title:
ENERGY TECHNOLOGY SYSTEMS ANALYSISOriginal File Name Searched:
IRENA_ETSAP_Tech_Brief_E17_Thermal_Energy_Storage.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |