Chapter 5 Watertube Boilers (Heating, Power & Tubular)

Question 1

One reason that low capacity watertube boilers are seldom used for low pressure heating is that they

a) Require less supervision
b) Cost less
c) Have the flue gas flowing inside the tubes
d) Require more supervision for water treatment

Answer 1

d) Require more supervision for water treatment

Question 2

The heating surface of a copper-tubular boiler consists of:

a) Drums and headers
b) A continuous copper tube
c) Straight firetubes
d) Bent tubes attached to drums

Answer 2

b) A continuous copper tube

Question 3

The type of watertube boiler that has an upper drum and two lower drums is a(n) _________ type.

a) “O”
b) “B”
c) “A”
d) “D”

Answer 3

c) “A”

Question 4

An advantage of a packaged boiler would be:

a) Ease of installation
b) Constructed entirely on site
c) It can be built to any height
d) No water treatment required

Answer 4

a) Ease of installation

Question 5

The purpose of attaching “fins” to watertubes is to:

a) Provide for a swirling action of the flue gases
b) Increase the heating surface
c) Increase the strength of the tubes
d) Provide for better water circulation

Answer 5

b) Increase the heating surface