Controlling, e.g. starting, stopping (F01K7/00, F01K13/02 take precedence)

Full Title

Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein (regenerating exhaust steam F01K19/00) > having heaters (having both steam accumulator and heater F01K3/14; steam heaters per se F22) > with heating by combustion gases of main boiler > Controlling, e.g. starting, stopping (F01K7/00, F01K13/02 take precedence)