MN BOILER EXAM CORRECT 100%
3 ways that heat transfers - ANSWERradiation, conduction, convection
3 types of drafts - ANSWERnatural, forced, induced
Water tube boiler - ANSWERhot gases circulating around tubes filled with water
Cast iron sectional boiler - ANSWERmade of individual sections, is expandable
Low pressure boiler defined - ANSWER<15psig steam, <160psig hot water or <250
degrees
What to do if no water is visible in boiler - ANSWERshut down and allow to cool, DO
NOT ADD WATER
3 types of boilers - ANSWERfire tube, water tube, cast iron sectional
Fire tube boiler - ANSWERhot gases circulating through tubes surrounded by water
Boiler explosion - ANSWERdestructive force caused by instant release of energy
stored as heat
Efficiency - ANSWERoutput divided by input
Insufficient draft - ANSWERlowers efficiency
One horsepower (HP) is equal to - ANSWER10 sq. ft. of heating surface
One kilowatt (KW) is equal to - ANSWERone sq. ft. of heating surface
Ten kilowatt (KW) is equal to - ANSWERone boiler horsepower
BTU - ANSWERBritish Thermal Unit, the amount of energy needed to heat one
pound of water one degree Fahrenheit
BHP - ANSWERboiler horsepower
PSIG - ANSWERpounds per square inch gauge
Steam boiler - ANSWERA closed pressure vessel in which water is converted to
steam by the application of heat
Steam boiler operation - ANSWERoperates at 15 psi
pressure decrease- start, on pressure increase, stop
3 ways that heat transfers - ANSWERradiation, conduction, convection
3 types of drafts - ANSWERnatural, forced, induced
Water tube boiler - ANSWERhot gases circulating around tubes filled with water
Cast iron sectional boiler - ANSWERmade of individual sections, is expandable
Low pressure boiler defined - ANSWER<15psig steam, <160psig hot water or <250
degrees
What to do if no water is visible in boiler - ANSWERshut down and allow to cool, DO
NOT ADD WATER
3 types of boilers - ANSWERfire tube, water tube, cast iron sectional
Fire tube boiler - ANSWERhot gases circulating through tubes surrounded by water
Boiler explosion - ANSWERdestructive force caused by instant release of energy
stored as heat
Efficiency - ANSWERoutput divided by input
Insufficient draft - ANSWERlowers efficiency
One horsepower (HP) is equal to - ANSWER10 sq. ft. of heating surface
One kilowatt (KW) is equal to - ANSWERone sq. ft. of heating surface
Ten kilowatt (KW) is equal to - ANSWERone boiler horsepower
BTU - ANSWERBritish Thermal Unit, the amount of energy needed to heat one
pound of water one degree Fahrenheit
BHP - ANSWERboiler horsepower
PSIG - ANSWERpounds per square inch gauge
Steam boiler - ANSWERA closed pressure vessel in which water is converted to
steam by the application of heat
Steam boiler operation - ANSWERoperates at 15 psi
pressure decrease- start, on pressure increase, stop
