Question
Fiberglass insulation owes its insulating quality primarily toa. the low thermal conductivity of glass.b. its ability to block cold air infiltration.c. the low thermal conductivity of air trapped between the glass fibers.
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Fiberglass insulation is a type of insulation that consists of extremely fine glass fibers. It is a lightweight, yet durable insulation solution that is used in many residential and commercial buildings. Show more…
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One purpose of foil facing on fiberglass insulation is to reduce heat loss by a. conduction. b. convection. c. radiation.
Passage Problems Fiberglass is a popular, economical, and fairly effective building insulation. It consists of fine glass fibers--often including recycled glass- -formed loosely into rectangular slabs or rolled into blankets (Fig. $16.18) .$ One side is often faced with heavy paper or aluminum foil. Fiberglass insulation comes in thicknesses compatible with common building materials- -for example, 3.5 inch and 6 inch for wood framed walls. Standard 6 -inch fiberglass has an $\mathcal{R}$ -factor of 19. (FIGURE CANNOT COPY) Fiberglass insulation owes its insulating quality primarily to a. the low thermal conductivity of glass. b. its ability to block cold air infiltration. c. the low thermal conductivity of air trapped between the glass fibers.
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