POWER PLANT OPERATIONS PART 3

a closed pressure vessel in which water is boiled and converted into steam under controlled conditions

a system that controls the temperature of steam leaving a boiler by using water injection through a control valve

tubes exposed to the firebox that transfer water from the steam drum to the mud drum

the section of a boiler used to preheat feed water before it enters the main boiler system

(1) the lower drum of a boiler that is used as a junction area for boiler tubes. (2) A low place in a boiler where heavy particles in the water will settle out so that they can be blown down

tubes that go into the side or top of the steam drum, allowing heated water and steam to flow up from the mud drum

the top drum of a boiler where all of the generated steam gathers before entering the separating equipment

steam that has been heated to a very high temperature so that a majority of the moisture content has been removed (also called dry steam)

a set of tubes, located near the boiler outlet, that increases (superheats) the temperature of the steam

In order to contain and redirect heat back into the firebox, a special ______lining (a brick like form of insulation) is used.

Hot water is less ______than cold water, so it tends to ______.

Boilers are designed in two major types:

The purpose of a boiler is to

(sight glass) is a tube that indicates the water leve in a boiler.

At sea level, atmospheric pressure is approximately......