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Common Applications Industrial waste heat recovery for an increased efficiency and a reduced energy consumption. Decoupling of power and heat in cogeneration plants. Thermal management of thermally driven processes. Storage of renewable heat to facilitate a temporal separation from energy production. (Fig. 3). Utilization of Power-to-Heat concepts for flexible supply and/or grid stabilisation. LHS integration in subcritical steam cycles. Example Applications EERA Joint Program on Energy Storage - SP3 on Thermal Energy Storage Figure 3. PCM heating-cooling cycles used in applications. In co-generation plants, power and heat are simultaneously generated from the same fuel. In such plants, a steam generator is used to produce superheated steam for power generation, whereas heat is stored in HT-LHTES for back- up and peak shaving (Fig. 4). 1. Co-generation plants Figure 4. LTES integration in a Co-gen plant [4]. 2. Concentrating Solar Power (CSP) plants Integration of HT-LHTES with CSP offers dispatchable power, increases the share of solar electricity and reduces levelized cost of energy (Fig. 5) [7]. Figure 5. LHTES storage integrated with CSP [7]. 3. Direct steam generation processes Integration of HT-LHTES with direct steam generation processes ensures heat input at nearly constant temperature. Figure 6 shows a 100kWth module with inorganic PCM coupled with a solar-driven direct steam generation process Figure 6. 100 kW, 220°C storage module [4]. A system with a heating power of 6 MW and a total heat storage capacity of 36 MWh was designed and built in 2016 to provide space heating for 57,000 m2 (Fig. 7). The system takes curtailed wind power (10kV), turning the power to heat and store the heat in high temperature composite PCM at ~700 °C. The overall thermal efficiency is >~95 % [8]. 4. Power-to-Heat Figure 7. World’s first composite PCM (700°C) plant: capacity 6 MW/35 MWh [8]. References 1. DOE, 2018. 2. R. Jacob & W.D. Steinmann, 2018. 3. EERA/EASE, 2017. 4. BVES, 2016. 5. IEA, 2013. 6. NREL, 2011. 7. R. Tamme, 2009. 8. Jinhe Energy, 2018. http://eera-es.eu/ Contact JP Energy Storage SP3 - Thermal Energy Storage http://eera-es.eu European Energy Research Alliance (EERA) Rue de Namur, 72 1000 Brussels | BelgiumPDF Image | Brochure on Thermal Energy Storage Technologies
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