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chapter 1
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Indicate whether the statement is true or false.
1. Thermal radiation is electromagnetic energy.
a.
True
b.
False
2. The primary method of heat loss from a human being is conduction to the surrounding air.
a.
True
b.
False
3. Supplying existing thermal loads with renewable energy sources usually provides a better return on investment than
reducing loads.
a.
True
b.
False
4. The unit cost of an energy source is independent of the device used to convert that energy into heat.
a.
True
b.
False
5. The main purpose of installing a heating system is to maintain human comfort.
a.
True
b.
False
Indicate the answer choice that best completes the statement or answers the question.
6. How does the body respond to a decrease in convection heat loss?
a.
lowering internal body temperature
b.
increasing perspiration
c.
reducing skin temperature
d.
it does not respond
7. Which factor was LEAST influential in increasing the current interest in alternative energy sources?
a.
government incentives
b.
concern about global climate change
c.
change in the price of crude oil in the 1980s
d.
increasing demand for conventional energy beginning in 2007
8. Which of these is the primary driving force that causes heat to move?
a.
thickness of the materials that store heat
b.
form of the heat (solid, liquid, or gas)
c.
temperature difference
d.
volume of air contained in a building
9. What is the best example of flooring material with high thermal mass?
a.
concrete
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b.
cork
c.
wood
d.
carpet
10. Variable refrigerant flow technology used in some ductless systems adjusts flow rate based on what factor?
a.
zone cooling loads
b.
number of zones
c.
ambient temperature
d.
surface temperature of the condenser
11. What is the best example of ducting generally used in mini-duct systems?
a.
2-inch diameter fixed ducting
b.
2-inch diameter flexible ducting
c.
large standard ducting transitioning to smaller ducting entering the condenser
d.
6-inch diameter semi-rigid ducting
12. What is LEAST likely to be a source of VOCs?
a.
furnace
b.
furniture
c.
construction materials
d.
glass
13. Which of these is the most common unit of heat used in North America?
a.
British thermal unit
b.
American thermal unit
c.
Kilopascal
d.
Fahrenheit
14. Which of these is the best example of a low entropy energy source?
a.
heat stored in a building’s graywater
b.
heat stored in cool outside air
c.
heat present in air at 65° F
d.
heat from a 2,500° F flame
15. Which is a side effect of a powered exhaust system?
a.
pressurization of the building
b.
depressurization of the building
c.
increase in humidity in the building
d.
decrease in humidity in the building
16. Graywater heat exchangers should be installed on drainage pipes that run in which orientation?
a.
horizontal only
b.
vertical only
c.
diagonal
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d.
either horizontal or vertical
17. According to Robert Bean, all of the factors below determine indoor environmental quality EXCEPT ____.
a.
thermal comfort quality
b.
odor quality
c.
vibration quality
d.
visual quality
18. What is an unlikely effect of a leak or drip in a hot water piping system?
a.
increased thermal load
b.
decreased thermal load
c.
wasted water
d.
annoyance
19. Which energy source is NOT considered a form of conventional energy?
a.
natural gas
b.
propane
c.
fuel oil
d.
hydroelectric
20. Which example is NOT an energy-efficient construction method?
a.
framing that reduces thermal bridging
b.
fully taped building wrap over sheathing
c.
low R-value insulation in crawl spaces
d.
24 inches on center inline framing
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Answer Key
1. True
2. False
3. False
4. True
5. True
6. b
7. c
8. c
9. a
10. a
11. b
12. d
13. a
14. d
15. b
16. b
17. d
18. b
19. d
20. c
