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WorksheetsHeat Transfer Units
Total questions: 10
Worksheet time: 5mins
What type of hot water terminal unit is usually installed in a vestibule of a building
finned tube baseboard radiator
cast iron baseboard radiator
cabinet unit heater
horizontal unit heater
Hot water unit heaters are typically
recessed in the wall or floor
hung from the ceiling or overhead beams
floor standing and surface mounted units
inside an air handling unit
Dirty hot water heating coils pose an energy efficiency problem due to
their potential of being a health hazard
their ability to disrupt the flow of heat transfer fluid
their potential of being a fire hazard
their inability to effectively transfer heat
Radiant heating can be installed
inside a concrete slab (floor)
under wood flooring
inside a wall or ceiling behind drywall
all of the above
Most new hot water heat transfer units using control valves are piped out with
unions, shut-off valves, strainers, circuit setters and P/T plugs
only shut-off valves
traps and strainers
unions, shut-off valves, strainers and plug valves
It is fair to say that, with the exception of radiant heating, most hot water floor standing terminal units in large buildings...
are the primary source of heat transfer
are usually installed under windows or on a cold walls to offset their heat loss
are only used during extremely cold weather
are piped in series loops
The proper way to pipe a hot water heating coil with multiple rows is:
supply in the bottom outlet and return out of the top outlet
supply in the top outlet and return out of the bottom outlet
either option is satisfactory
supply should be connected to the outlet that is downstream of the air flow
Can you use a large column cast iron radiator that has its sections connected only on the bottom on a hot water system?
Yes, as long as you drill and tap outlets in the top of each section and install air vents
No, these radiators are only for steam use
Yes, hot water is less dense than cool water and will find its way around the different sections of the radiator
Yes, as long as you install a large valve in the supply
The majority of all hot water heat transfer units
(terminal units) are manufactured using
steel piping and tin fins
cast iron body and nodules
copper tubing and aluminum fins
steel piping and aluminum fins
Hot water panel radiators use low temperature heat transfer fluid (HTF) and can be installed
on any wall of a building
on any ceiling of a building
under windows around the perimeter of a building
all of the above
