3.4 Boiler heat transfer components

Hot spots on tubes are a serious problem. They indicate poor heat ____ through the tube walls

The separately fired superheater is located in a ____ apart from the main steam generator and is independent of the steam generator operating conditions.

Furnace baffles can be placed so as to cause the gases to flow at right angles to the tube length, in which case they are called ______ baffles.

In order to direct the flow of combustion gas over the tubes in a watertube boiler it is necessary to use ______

There is no steam flow through the ______ tubes before the steam turbine has a steam flow through it. Be careful not to increase boiler firing too rapidly and overheat the reheat tubes during startup.

The water and water/steam mixture in the steam generation tubes is at ______ temperature

A wall suitable for severe service, where the tubes are side by side and touching each other, is called a _______ wall

The control methods are used for reheater temperature are the same as those used for _____ temperature control.

The ________ increases the temperature of the steam from the H.P. turbine back up to superheat temperature.

Furnace Baffles may be placed so as to cause the gases to flow parallel to the tubes, in which case they are called _____ baffles.