Questão 1
Questão
The design heating load of a building is an estimate of the rate at which a building loses heat during the near minimum outdoor temperature.
Questão 2
Questão
One can assume that individual room heating loads are proportional to room floor area.
Questão 3
Questão
The R-value of a material is not directly proportional to its thickness.
Questão 4
Questão
Many residential and commercial buildings have concrete floor slabs rather than crawl spaces or full basements. Downward heat losses are relatively small from interior areas of the floor slab.
Questão 5
Questão
The U-value of any material or assembly is simply the reciprocal of the R-value of that material or assembly.
Questão 6
Questão
Heat is lost through all building surfaces that separate heated space from unheated space.
Questão 7
Questão
It is relatively easy to assess the location and magnitude of all the air leakage paths in a typical building.
Questão 8
Questão
The number of heating degree days that accumulate in a 24-hour period is the difference between 72 F and the average outdoor air temperature during that period.
Questão 9
Questão
Knowing how many MMBtu a building requires over a typical heating season is not of much use to most owners.
Questão 10
Questão
A boiler, furnace, or small space heater operating on the same fuel, at the same assumed conversion efficiency, would produce the same estimated annual heating cost.
Questão 11
Questão
The heating load is __________ of heat flow from the building to the outside air.
Responda
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a rate
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the quantity
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the cost
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one unit
Questão 12
Questão
The proper approach is to perform a heat load calculation __________.
Questão 13
Questão
An object's thermal __________ can be defined as its thickness in the direction of heat flow divided by its thermal conductivity.
Responda
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reactivity
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reproduction
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reciprocity
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resistance
Questão 14
Questão
Heat flow from a basement or slab-on-grade foundation is determined by complex interactions between the building, the surrounding soil, insulation materials (if present), and the __________.
Responda
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depth of the foundation
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orientation of the structure
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air temperature above grade
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planned usage of the room
Questão 15
Questão
All building surfaces that separate heated space from unheated space (walls, windows, ceilings, doors, foundation, etc.) are called the __________ of the building.
Responda
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thermal envelope
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heat load variables
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resistance factors
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thermal qualifiers
Questão 16
Questão
The U-value of any material or assembly is simply the reciprocal of the __________ of that material or assembly.
Responda
-
heat load
-
temperature
-
exposure
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R-value
Questão 17
Questão
In addition to conduction losses, heat is also carried out of buildings by uncontrolled air leakage. This is called __________ heat loss.
Responda
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anti-thermal
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infiltration
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insulation
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environmental
Questão 18
Questão
One common method of factoring local weather conditions into estimates of heating energy use is based on heating _________.
Responda
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prognostication
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thermometers
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historical records
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degree days
Questão 19
Questão
Once the __________ price of the fuel options has been calculated, a simple multiplication determines the estimated seasonal heating cost in dollars.
Responda
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effective
-
unit
-
advertised
-
estimated
Questão 20
Questão
To estimate the annual space heating cost provided by an electrically operated heat pump, its average COP must be factored in. What does COP stand for?