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Chapter 2 - Heating Load Estimates

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Quiz #2
Neil Revollo
Quiz by Neil Revollo, updated more than 1 year ago
Neil Revollo
Created by Neil Revollo over 8 years ago
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Resource summary

Question 1

Question
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.
Answer
  • True
  • False

Question 2

Question
One can assume that individual room heating loads are proportional to room floor area.
Answer
  • True
  • False

Question 3

Question
The R-value of a material is not directly proportional to its thickness.
Answer
  • True
  • False

Question 4

Question
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.
Answer
  • True
  • False

Question 5

Question
The U-value of any material or assembly is simply the reciprocal of the R-value of that material or assembly.
Answer
  • True
  • False

Question 6

Question
Heat is lost through all building surfaces that separate heated space from unheated space.
Answer
  • True
  • False

Question 7

Question
It is relatively easy to assess the location and magnitude of all the air leakage paths in a typical building.
Answer
  • True
  • False

Question 8

Question
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.
Answer
  • True
  • False

Question 9

Question
Knowing how many MMBtu a building requires over a typical heating season is not of much use to most owners.
Answer
  • True
  • False

Question 10

Question
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.
Answer
  • True
  • False

Question 11

Question
The heating load is __________ of heat flow from the building to the outside air.
Answer
  • a rate
  • the quantity
  • the cost
  • one unit

Question 12

Question
The proper approach is to perform a heat load calculation __________.
Answer
  • factoring seasonal requirements
  • for each room
  • for the entire building
  • based on the owner's usage

Question 13

Question
An object's thermal __________ can be defined as its thickness in the direction of heat flow divided by its thermal conductivity.
Answer
  • reactivity
  • reproduction
  • reciprocity
  • resistance

Question 14

Question
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 __________.
Answer
  • depth of the foundation
  • orientation of the structure
  • air temperature above grade
  • planned usage of the room

Question 15

Question
All building surfaces that separate heated space from unheated space (walls, windows, ceilings, doors, foundation, etc.) are called the __________ of the building.
Answer
  • thermal envelope
  • heat load variables
  • resistance factors
  • thermal qualifiers

Question 16

Question
The U-value of any material or assembly is simply the reciprocal of the __________ of that material or assembly.
Answer
  • heat load
  • temperature
  • exposure
  • R-value

Question 17

Question
In addition to conduction losses, heat is also carried out of buildings by uncontrolled air leakage. This is called __________ heat loss.
Answer
  • anti-thermal
  • infiltration
  • insulation
  • environmental

Question 18

Question
One common method of factoring local weather conditions into estimates of heating energy use is based on heating _________.
Answer
  • prognostication
  • thermometers
  • historical records
  • degree days

Question 19

Question
Once the __________ price of the fuel options has been calculated, a simple multiplication determines the estimated seasonal heating cost in dollars.
Answer
  • effective
  • unit
  • advertised
  • estimated

Question 20

Question
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?
Answer
  • coefficient of performance
  • capacity of production
  • calculation of price
  • correlation of parts
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