Net ZEB Case Studies - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 415

Table 7.14 Window optical characteristics (Diffuse values for the RSF are
assumed. Windows types not used in the RSF are to be used later for
thermal and daylighting modeling)

Glazing Type SHGC Daylight

Transmittance

Suitable
Application

Normal
incidence

Diffuse Normal
incidence

Diffuse

Triple-glazed
window

Low SHGC
(RSF
vision
window)

0.23 0.15 0.43 0.28 Cooling-dominated

climate

High
SHGC

0.62 0.52 0.68 0.57 Heating-dominated

climate

Double-glazed
window

Low SHGC
(RSF
daylighting
window)

0.38 0.32 0.7 0.59 Cooling-dominated

climate,
daylighting window

High
SHGC

0.70 0.61 0.76 0.66 Heating-dominated

climate,
daylighting window

For the open office area, during the daytime when the electric lights are
turned on, the light output is dimmed according to the sensed light level on
the workplane. Starting at 6:00 P.M., timed lights-OFF sweeps will occur
(withablink-warnfunctionallowingoccupantstooverridetoON)every2h.
If lights are manually turned on, they remain on for 2 h. Typical light levels,
as measured on a sunny winter day, are shown in Table 7.15 .