This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 764025.
The SWS-HEATING project will develop an innovative seasonal thermal energy storage (STES) unit with a novel storage material and creative configuration, i.e. a sorbent material embedded in a compact multi-modular sorption STES unit. This will allow to store and shift the harvested solar energy available abundantly during the summer to the less sunny and colder winter period thus covering a large fraction of heating and domestic hot water demand in buildings. The targeted benefit of this next generation solar heating technology is to reach and overcome a solar fraction of 60% in central/north Europe, reaching 80% in the sunnier south of Europe, with a compact and high-performing STES system at low cost, realising solar- active houses throughout EU.
The SWS-heating system is based on a multi-modular sorption seasonal thermal energy storage (STES) unit, using novel sorbent materials of Selective Water Sorbents (SWS) family characterised by superior heat storage density compared to the state of the art, making it possible to drastically decrease the storage volume with negligible thermal losses. These materials are employed in a sorption module with dedicated heat exchangers. Solar heat is provided to the storage modules by high- efficiency evacuated tube solar thermal collectors. Intensive research activities will deal with an advanced vacuum combi- storage tank, with the aim to further minimise thermal losses. A smart and adaptive control will be developed for efficiently managing heat supply and demand sides, including advanced features aiming at user-friendliness. A building prototype will be commissioned including the SWS-heating system, which will be tested and validated in Germany and Sweden and proof all challenging objectives.
The project also includes dissemination and communication activities to ensure outreach of its results. Moreover, exploitation activities include long-term deployment path development through a technology roadmap.
The solar compact Selective-Water-Sorbent (SWS) Seasonal Thermal Energy Storage (STES) concept relies on applying an innovative class of water sorbing material embedded in an intelligent configuration with an advanced control system. Solar heat will be used to provide domestic hot water (DHW) up to 60 °C, while the remainder will be used mainly to charge the seasonal storage unit during summer, allowing to store the heat for several months, bridging the summer-winter period. This way a maximised use of solar input heat throughout the year is ensured.
During winter, the stored heat will preferentially be used for space heating, and a backup heater will operate only when all stored heat has been fully discharged to cover the heat demand .
Including also heat storage for DHW, recovering heat produced during the charging cycle and making use of even the lowest grade heat amounts (within 5 –30 °C), the system will allow to reach solar fraction currently not achievable at reasonable price and small space demands (e.g. with solar collectors and water-based TES).
- NATIONAL TECHNICAL UNIVERSITY OF ATHENS - NTUA
- UNIVERSIDAD DE LLEIDA
- CONSIGLIO NAZIONALE DELLE RICERCHE
- FAHRENHEIT GMBH
- OSTBAYERISCHE TECHNISCHE HOCHSCHULE REGENSBURG
- USER FEEDBACK PROGRAM SL
- UNIVERSITA DEGLI STUDI DI PERUGIA
- BORESKOV INSTITUTE OF CATALYSIS, SIBERIAN BRANCH OF RUSSIAN ACADEMY OF SCIENCES
- AKOTEC PRODUKTIONSGESELLSCHAFT MBH
- T.E.A.V.E LTD
- PHASE CHANGE MATERIAL PRODUCTS LTD
- INNOHEAT SWEDEN AB
- THE UNIVERSITY OF SUSSEX
- E3G INGENIERIA Y ENERGIA, SOCIEDADLIMITADA
- KOKORELIA ARCHITECTS LIMITED
- KUNGLIGA TEKNISKA HOEGSKOLAN
Start date: 1/06/2018 - End date: 31/05/2022