ASHRAE Glass Zone, Roof, & Wall Types

When defining rooms, roofs, walls, and doors in your project, you can set a Glass Zone Type ▾, ASHRAE Roof Type ▾, or ASHRAE Wall Type ▾. These types are based upon the 1997 ASHRAE Fundamentals Handbook.

The charts below illustrate how thermal lag and heat transfer differ among the available types.

Glass Zone Types

The Glass Zone Type ▾ is set in the room definition and affects the thermal lag of the solar load.

Lower zone types have higher peak values that quickly fall off. Higher zone types have lower peak values that fall off more slowly.

The graph below is based upon Table 36, page 28.50. The types are based upon Table 35B.

Roof Types

The ASHRAE Roof Type ▾ affects solar heat transfer through the roof and is set in the roof definition.

Generally, lower roof types have lighter construction and transfer heat more quickly. Higher roof types have heavier construction and transfer heat more slowly.

The graph below is based upon Table 30, page 28.42. The types are based upon Table 31.

Wall Types

The ASHRAE Wall Type ▾ affects solar heat transfer through walls and doors and is set in the wall definition and door definition.

Generally, lower wall types have lighter construction and transfer heat more quickly. Higher wall types have heavier construction and transfer heat more slowly.

The graph below is based upon Table 32, page 28.43. The types are based upon Table 33.