Abstract: Superheated steam generator comprising an outer ferrule having at its opposite ends a chamber for the intake of water to be vaporized and superheated and a steam outflow chamber and a group of tubes connecting said chambers in which circulates the water to be vaporized and superheated by heat exchange with a hotter fluid circulating in counterflow around the tubes within the outer ferrule, wherein the steam outflow chamber comprises an outer wall surrounded by a coil linked with said chamber, in such a way that part of the superheated steam introduced into the outflow chamber circulates in the coil.The invention is intended more particularly for use in superheated steam generators by heat exchange with liquid sodium in power stations based on a fast breeder reactor.

Abstract: In a process in which a heating fluid supplied from a heater is utilized to supply heat to a plurality of processes, method and apparatus is provided for substantially optimizing the operation of the heater by minimizing the temperature of the fluid flowing from the heater while continuing to satisfy the heat demand of the processes being served.

Abstract: A combustion chamber and liner for use in a wound boiler formed from a heat exchanger slab rolled into a plurality of wound heat exchanger convolutions, the inner heat exchanger convolutions defining a space in which a sized and shaped elongated hollow cylindrical member defining the fire box is removably mounted and in assembled position forms an inner annular combustion gas flow passage disposed to communicate with an outer combustion gas flow passage, the cylindrical member has means to position and orient the cylindrical member in assembled position so that a top inlet in the wall of the cylindrical member in association with an aligning and guide member will pass combustion gases from the fire box into the inner combustion gas flow passage, in a direction counter to the flow of combustion in the fire box, and the outer combustion gas flow passage is disposed to communicate with a suitable flue or discharge outlet to pass residual combustion gases to waste.