Textbook Review Flashcards
An oversized air conditioner will
a) cost more to install and operate
b) be better able to maintain humidity
c) require smaller air distrb.
d) be more efficient
a) cost more to install and operate
Methods used to calculate the heat gain and heat loss of a structure should
a) provide same realist for all houses with same foot print
b) provide only a very rough estimate
c) be nationally recognized and accepted
d) rely on rule of thumb
c) national recognized and accepted
An exterior wall
a) separates a conditioned interior space from an unconditioned interior space
b) separates an interior conditioned space from the outside
c) separates one interior conditioned space from another interior conditioned space
b
A partition wall
a) separates a conditioned interior space from an unconditioned interior space
b) separates an interior conditioned space from the outside
c) separates one interior conditioned space from another interior conditioned space
a)
As the TD across a panel increases
a) rate of heat transfer will increase
b) rate of heat transfer will decrease
c) relative humidity in the occupied space increases
d) relative humidity of the occupied space decreases
a)
The typical indoor design temperature used for heat gain calculations is
a) 65F
b) 70F
c) 75F
d) 80F
c)
Typical indoor design temperature for heat loss is ?
a) 65f
b)70f
c)75f
d) 80f
b)
If the R-value of a construction material is 2.0, what is its U-value?
0.5
If a wall is made up of four different materials, all layered one on top of the other, how will the total R-value of the wall be determined?
By adding the R-values of the materials together
All of the following are taken into account on a heat loss calculation except?
interior walls
All of the following are taken into account on a heat gain calculation except?
a) exterior walls
b) partition walls
c) basement floors
d) top floor ceilings
basement floors
The most basic heat gains and heat loss calculations are based solely on the ____ of the space being conditioned.
area
For calculating the heat gain from appliances, the guideline typically applied to a house with only a refrigerator and a vented cooking surface is ____ Btu/h.
1200btuh
Which of the following statements best describes the reason why heat gain and heat loss calculations should be performed?
A. To make certain that the cooling system will be able to cool the structure, even on the hottest day of the year
B. To make certain that the heating system will be able to heat the structure, even on the coldest day of the year
C. To properly size heating and cooling equipment based on design temperatures for the city in which the equipment will be installed
D. To properly match the square footage of the structure to the heating and cooling equipment’s nameplate capacity
d
Which of the following statements is most likely true regarding two insulation materials, one with and R-value of 20 and the other with an R-value of 10
A. The R-10 material will prevent heat from passing through it better than the R-20 material
B. The R-20 material will prevent heat from passing through it better than the R-10 material
C. The R-10 material will likely be thicker than the R-20 material
D. The R-20 material will likely be thinner than the R-10 material
d
