boiler 1

• Why are some steam heating boiler systems designed to operate under a vacuum? to utilize steam with a temperature below 212˚F
• Which of the following statements regarding a hydronic heating system is accurate in its description?the water circulator must take the water from the boiler and move it through the individual terminals or heating units where the heat is emitted and then returns the water to the boiler to be reheated.
• Which of the following is not an advantage of steam heating systems?only small pumps are needed to move steam.
• Which of the following is not a classification of a hot water system?a Hartford loop system
• Which of the following best describes the combustion chamber of a serpentine tube heating boiler? it is located below the tubes
• Where would the heat and gases of combustion pass in a watertube boiler? around the tubes
• When performing a hydrostatic test, the pressure on the boiler should not exceed: 10 psi above 1.5 times the MAWP
• When bringing a steam heating plant on line from a cold start, when the ambient conditions are about 20 degrees F, what condition are you preventing when the pressure is increased gradually? thermal shock
• What type of boiler is a Horizontal Return Boiler (HRT)? a fire-tube boiler
• What is the science of heating and cooling with water as the conveying medium called? hydronics
• What is the purpose of an aquastat control device on a boiler system? it is used to control water temperature
• What is an expansion tank in a hot water heating system designed to provide for in such a system? the expansion of water
• The water temperature indicator of a hot water heating boiler should measure the temperature: at the boiler supply
• The observed pressure of a heating system when it is in an idle or non-operating mode is called: This is known as the static pressure of the system
• The ASME Code states that the setting on the high limit pressure control on a low pressure steam boiler shall not exceed: 15 psig
• In order to produce one pound of steam, it is necessary to evaporate: one pound of water
• In order to be a good operator one must have basic knowledge on the principles of how energy works in a steam and hot water system. Which of the statements below is correct? in a heating system, in order to change state from a liquid to a gaseous state heat must be added.
• In a hydronic system, which of the following statements is correct regarding the heat transfer efficiency of a heating system? in a hydronic heating system, if a system has too much air, it can't properly transfer heat.
• In a hot water heating system, where would you find an expansion tank and what is its function? on the suction side of the pump to avoid negative pressure in the system
• In a hot water heating system, variations in the volume of water in the system is taken care of by the expansion tank
• Identify the correct type of heating system, conditions and the Btu value given in the statement. to vaporize a pound of water having a temperature of 212˚F at atmospheric pressure, 970.3 BTU's must be added.
• Hot water heating systems produce heat more consistently than steam heating systems. True
• Cast iron sectional boilers are built for what type of draft firing? mechanical forced and/or induced
• By definition, a boiler is an open vessel in which water is turned to steam under pressure by the application of heat. false
• the water circulator must take the water from the boiler and move it through the individual terminals or heating units where the heat is emitted and then returns the water to the boiler to be reheated.
• What is the purpose of an aquastat control device on a boiler system? it is used to control water temperature
• The water temperature indicator of a hot water heating boiler should measure the temperature: at the boiler supply
• in a steam heating system to vaporize a pound of water having a temperature of 212˚F at atmospheric pressure, 970.3 BTU's must be added