Tokyo Institute of Technology · 공학
Shigehiko Funayama 교수의 연구실은 고온 열에너지 저장을 위한 테르모케미컬 에너지 저장(TCES) 기술에 중점을 두고 있으며, 특히 칼슘옥사이드/수화칼슘산화물-물 반응계를 활용한 고밀도·저비용 에너지 저장 시스템의 실용화를 목표로 합니다. 열전도도 향상을 위해 실리카-碳화규소(SiC/Si) 포아와 같은 다공성 기반 복합재료를 개발하여 반응 속도와 열전달 성능을 극대화하는 데 초점을 맞추고 있습니다. 반복 운용 시의 부패 및 응집 문제를 해결하기 위한 재료 설계와 수치 모델링을 병행해 실증 가능한 반응기 구조의 개발을 선도하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract Thermochemical energy storage using a calcium oxide/calcium hydroxide/water (CaO/Ca(OH) 2 /H 2 O) reaction system is a promising technology for thermal energy storage at high‐temperatures (400°C‐600°C). The purpose of this study is to develop a practical composite material by enhancing heat transfer through the reaction bed and mitigating problems of pure CaO/Ca(OH) 2 materials, such as formation of centimeter‐scale agglomerates and change in the bulk volume during repetitive reactions.
Abstract Thermochemical energy storage (TCES) using reversible gas‐solid reactions is a promising technology owing to the high energy density and capability of long‐term storage. TCES using a calcium oxide/calcium hydroxide/water (CaO/Ca(OH) 2 /H 2 O) reaction system has attracted considerable attention because of the low material cost and environmental friendliness of the reactants. Previous experimental studies have focused on the TCES performances of packed beds of calcium oxide/calcium hydro
• Numerical model for a composite of Ca(OH) 2 and Si–SiC foam was validated. • Composite with a foam porosity of 94% exhibited maximum power density. • Maximum power density at 5 min for the optimal composite was 0.97 kW L −1 . • This maximum power density was 1.6 times that of the pure Ca(OH) 2 powder. • Lower porosities inside the foam pores decrease the optimal foam porosity. The hydration of calcium oxide (CaO), a reaction that releases heat to produce calcium hydroxide (Ca(OH) 2 ), finds ap
Thermochemical energy storage is a promising technology for storage and output of heat. Some thermochemical energy storages use reversible gas-solid reaction to transform thermal energy into chemical energy which could be stored semi-permanently. The thermochemical energy storage using calcium oxide and water system was focused on in this study. Storage materials of powder of calcium hydroxide or calcium oxide have small practical feasibility because of its aggregation and activity degradation d
1．化学蓄熱の研究動向
Thermochemical energy storage using a calcium oxide/calcium hydroxide/water reaction system is a promising technology for large-scale energy storage because of inexpensive material cost and high energy density. However, low thermal conductivity (~ 0.1 W m-1 K-1) of storage materials can be a limitation for practical storage reactors that have high speeds of thermal response. Development of composite materials combining the storage material with high thermal conductivity materials is required to
