Questão 1
Questão
Hydronic heating systems use water (or water-based solutions) to move thermal energy from where it is produced to where it is needed.
Questão 2
Questão
Ideally, the water in a hydronic heating system is replaced in the system every year.
Questão 3
Questão
Providing comfort is the secondary objective of any heating system designer or installer.
Questão 4
Questão
Properly designed hydronic systems control both the air temperature and surface temperatures of rooms to maintain optimal comfort.
Questão 5
Questão
Maintaining comfort is simply a matter of supplying heat to the body.
Questão 6
Questão
A properly designed and installed hydronic system can operate with virtually no detectable sound levels in the occupied areas of a home.
Questão 7
Questão
Not every heating system consists of devices that convert one form of energy into another.
Questão 8
Questão
Thermal radiation is probably the least understood mode of heat transfer.
Questão 9
Questão
The simplest hydronic system can be described as a loop or piping circuit.
Questão 10
Questão
In single-loop systems, the flow-check valve prevents hot water in the boiler from slowly circulating through the distribution system when the circulator is off.
Questão 11
Questão
Water has many characteristics that make it ideal for a hydronic system. It is readily available, nontoxic, nonflammable, and has one of the highest __________ storage abilities of any material known to man.
Responda
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heat
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vapor
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molecular
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space efficient
Questão 12
Questão
Early hydronic systems did not have circulators. Instead, they relied on the __________ of hot water to move water between the boiler and the heat emitters.
Responda
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molecular attraction
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thermonics
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hydraulics
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buoyancy
Questão 13
Questão
Buildings with hydronic heating systems have shown __________ heating energy use compared to equivalent structures with forced-air heating systems.
Responda
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higher
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lower
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equal
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unquantifiable
Questão 14
Questão
A given volume of water can absorb over __________ times more heat as the same volume of air for the same temperature change.
Questão 15
Questão
Heat is our perception of atomic vibrations within a material. Our means of expressing the intensity of these vibrations is called _________.
Responda
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harmonics
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temperature
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cellular reaction
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tuning
Questão 16
Questão
Heat emitters that use fans or blowers to force air through a heat exchanger are usually called fan coils or air _________.
Responda
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handlers
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tunnels
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wavers
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blowers
Questão 17
Questão
All hydronic heating systems will inherently attempt to find a point of _______ and remain in operation at that point.
Responda
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level capacity
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even hydraulic flow
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thermal equilibrium
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customer comfort
Questão 18
Questão
In an ideal application, the rate of heat production by the heat source would _________ the rate of heat by the heat emitters.
Responda
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exactly match
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exceed
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remain lower than
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depend on
Questão 19
Questão
In single-loop systems, the __________ prevents hot water in the boiler from slowly circulating through the distribution system when the circulator is off.
Responda
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diaphragm
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thermosiphon
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off switch
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flow-check valve
Questão 20
Questão
An air separator is designed to separate air from water and eject it from the system. The process is ________ the water is heated.
Responda
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more difficult if
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enhanced as
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not affected if
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unnecessary if