“…A smaller-sized, factory-based manufacturing process using standardized components, coupled with the clustering of multiple units of SMRs within 'energy parks', can potentially reduce the long-run construction cost and shorten the delivery period [31,32]. Moreover heat production from SMRs (an inevitable by-product of the Carnot cycle of heat engines that is exploited today in fossil-fuel-powered combined heat-and-power units in Europe), if aligned with district heating systems (>100 • C) in cold climates, or else the provision of evaporative or reverse osmosis desalination services in tropical islands, could generate other economically attractive revenue streams [32,[35][36][37][38]. High-temperature thermal output of advanced reactor technologies can be used for other industrial purposes, such as petroleum refining (>300 • C), hydrogen production (>400~600 • C) [39,40], coal gasification (>800 • C) and blast furnace steel making (>900 • C) processes [7].…”