Deck 21: System Design

Question 1

The rate at which heat is transferred from one object to another is determined by the ______________________________ of the material.

Answer 1

thermal conductivity

Question 2

The ____________________ the air leaks through a building the faster heat is carried away from the structure.

Answer 2

faster

Question 3

The smaller the conductivity the fast heat transfer can occur.

Answer 3

False

Question 4

The rate of heat transfer through a given material is indirectly proportional the temperature differential.

Question 5

There are two thermal resistance that must be taken into account: ____________________ and ____________________ air film resistance

Question 6

The thermal resistance of wood is about ____________________ per inch of thickness.

Question 7

Wooden framing members tend to reduce the effective total R-value of a structure.

Question 8

It is only necessary to calculate heat flow through the surfaces that constitute this building envelope.

Question 9

The rate of heat transfer through a material is inversely proportional to its R-Value.

Question 10

Because a structure is made of multiple materials. The ____________________ of each material must be determined and a total R-Value for that portion of the structure computed.

Question 11

The design heating load estimate of a building is an estimate of the rate at which a building loses heat during the near minimum outdoor temperature.

Question 12

Infiltration losses does not have to be considered when performing a heating load estimate.

Question 13

The greater the resistance the slower the rate of heat transfer

Question 14

The greater the temperature differential the quicker the heat is transferred.