1. Sectional-header cross drum 2. Box-header cross drum 3. Box-header longitudinal drum . In the SECTIONAL-HEADER CROSS DRUM boiler with vertical headers, the headers are steel boxes into which the tubes are rolled. Feedwater enters and passes down through the downcomers (pipes) into the rear sectional headers from which the tubes are supplied
Author: E. Keeler Company
The water tube boiler diagram is shown below, and these two drums are associated via two tubes such as downcomer and riser. At first, the water is supplied into the steam type drum with the help of a water pump. Whenever the fuel is burned, then hot gases will be generated that are permitted to supply in the shell part of the boiler.
May 10, 2017· Design Variations i) D-type boiler the most common type of small- to medium- sized boilers used in both stationary and marine applications ii) Cross Drum Water Tube Boiler In Cross Drum Boiler the steam drum is placed at cross ways to the heat source 13 14.
A cross drum straight tube boiler. Since furnace pressure is often positive on a packaged water tube boiler, in order to prevent flue gas leakage. Chapter 90 - Cast-Iron Sectional and Modular Boilers 15 Terms. KeyanoIan. Power Engineering 4th Class Chapter 90 17 Terms. dough58. Unit 12
The cross drum boiler is a variant of the longitudinal drum boiler in that the drum is placed cross ways to the heat source as shown in Figure 3.3.6. The cross drum operates on the same principle as the longitudinal drum except that it achieves a more uniform temperature across the drum. Disadvantages of water-tube boilers: They are not as
Bent tube watertube boilers a) cannot have the furnace water-lined b) make more efficient use of the furnace c) are externally fired d) cannot be fitted with heat recovery components e) have poor utilization of floor space. B. A cross drum straight tube boiler a) could not have higher capacity than a longitudinal drum unit b) was usually only
Bent tube boilers are headerless. The drums serve the same function as the headers. Straight tube types of water tube boilers may be subdivided into three groups: (a) Sinuous header or box header type (b) Horizontal or vertical type (c) Longitudinal or cross drum type. Water tube boilers have the following advantages: (1) It possesses the
Mar 04, 2020· Two types of boiler drums used in all types of boilers are steam drum and mud drum. Both the drums have specific functions. Steam Drum. The functions of steam drum in feed water steam circuit are: To store water and steam sufficiently to meet varying load demands. To provide a head and thereby aiding the natural circulation of water through
A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes.In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes
Mar 04, 2020· In Cross Drum Boiler the steam drum is placed at cross ways to the heat source as shown in the figure. Here, the down-comer is fitted on the bottom of the drum and riser is fitted on the top of the drum via a horizontal tube as shown in the figure. 5 o to 15 o inclined water tubes are connected with down-comer and riser tubes in same manner of
A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes. szs two drum water tube boiler Water tub
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