VERIFIED QUESTIONS WITH ANSWERS
GRADED A+
⩥ Latent.
Answer: Change in state
⩥ Sensible.
Answer: Change in temperature
⩥ If boiler pressure drops without a drop in temp then.
Answer: a boiler explosion will occur
⩥ Absolute pressure (PSIA)=.
Answer: Gauge Pressure (PSIG)+Atomic Pressure (14.7PSI)
⩥ If your reading a gauge in a vacuum subtract gauge pressure from___.
Answer: atmospheric pressure
⩥ What are the 3 types of heat transfer?.
Answer: radiation, convection, and conduction
,⩥ Radiation.
Answer: Heat transfer with no physical contact
⩥ Convection.
Answer: Heat transfer by a medium (water, gas)
⩥ Conduction.
Answer: Heat transferred molecule to molecule
⩥ MAWP.
Answer: Maximum Allowable Working Pressure
⩥ NOWL.
Answer: Normal Operating Water Level
⩥ BH.
Answer: Boiler Horsepower
⩥ BTU.
Answer: (British Thermal Unit) The amount of energy needed to raise
one pound of water one degree
, ⩥ ASME.
Answer: American Society of Mechanical Engineers
⩥ HRT.
Answer: Horizontal Return Boiler
⩥ High Pressure Boiler is at least ....
Answer: 15 PSIG MAWP and 6 BH
⩥ Boiler Efficiency.
Answer: (Thermal Efficiency) Ratio of heat absorbed by the water
versus the heat available in the fuel
⩥ The water Colum does what?.
Answer: Reduces turbulence
⩥ Blowdown the gauge glass in the water column once what?.
Answer: A shift
⩥ The best way to determine how often to blow down a boiler is by
what?.