A Review of Ammonia - Based 2 Thermochemical Energy 3 Storage for Concentrating 4 Solar Power

9 ABSTRACT | The development of a thermochemical energy 10 storage system based on ammonia, for use with concentrating 11 solar power is discussed in this paper. This is one of a group of 12 storage options for concentrating solar power, some of which 13 are already operating commercially using molten salts. The 14 ammonia storage development has involved prototype solar 15 receiver/reactors operated in conjunction with a 20-m2 dish 16 concentrator, as well as closed-loop storage demonstrations. 17 An ongoing computational study deals with the performance of 18 an ammonia receiver for a 489-m2 dish concentrator. The 19 ammonia storage system could employ industry-standard 20 ammonia synthesis converters for superheated steam produc21 tion. A standard 1500 t/day ammonia synthesis reactor would 22 suffice for a 10-MWe baseload plant with 330 large 489-m2 23 dishes. At this stage, an updated economic assessment of the 24 system would be valuable.