ACR-201 UNIT 42 TEST

The most popular method for determining the heat gain and heat loss of a residential structure is to use _________.

• the square footage of the structure

• a Manual J calculation

• the geographical location of the structure

• the Department of Energy's climate regions

Oversized air-conditioning equipment will cool the space faster, resulting in ________.

• higher efficiency

• poor dehumidification

• poor drainage

• greater dehumidification

To determine the temperature differential for cooling equipment (Cooling Design TD), use the formula _____________.

• average outdoor ambient temperature – 75°F (standard)

• indoor design temperature – outdoor design temperature

• 75°F(standard) – indoor design temperature

• outdoor design temperature – indoor design temperature

As an insulating material is compressed, its R-value will ___________.

• multiply by the area that is compressed

• go down

• remain unchanged

• go up

The U-value of a material describes its thermal resistance and the R-value of a material describes its thermal conductivity.

• True

• False

_______ make up a large portion of the structural envelope and account for a large percentage of the total heat loss of a structure.

• Walls

• Floors

• Windows

• Cracks and openings

In general, the rate of heat transfer through a wall can be determined by _________.

• U-Vale + TD + Area

• R-value × TD × Area

• U-value × TD × Area

• U-value ÷ TD × Area

A term that is used to describe the area of a wall before any doors or windows are cut into it is __________.

• gross wall area

• net wall area

• door area

• window area

The higher the U-value, the easier it is for heat to pass through the material.

• True

• False

The two important factors that affect the U-value for the below-grade portion of a wall are ___________.

• how far below grade the wall is and whether it is an interior or exterior wall

• whether it is an interior or exterior wall and the construction material

• how far below grade the wall is and the construction material

• the number of windows and the number of doors in the wall