21. The introduction of the superheater further increased efficiency and made it much easier to maintain. 22. The reactor is one of two boiling-water superheater developed in the United States. 23. The action of the superheater was simple. 24. In some services, the steam will reenter the furnace through a superheater to become superheated. 25. Increased number of superheaters facilitates the control of superheater outlet steam temperature especially during start ups. 26. The steam velocity in the hottest superheater tubes is high, decreasing the tube surface temperature. 27. The superheater works like coils on an air conditioning unit, however to a different end. 28. The engines still lacked a superheater . 29. The smokebox superheater installed on the first machines was soon replaced by a smoke tube superheater. 30. The smokebox superheater installed on the first machines was soon replaced by a smoke tube superheater .
