PV Project Thermography - Comparison (5/20/98)

West Windows in Late Afternoon

This comparison shows the differences between the single pane windows installed on the control house and the double-pane argon filled windows in the PVRES house. The control house photographs were taken at about 5PM while the PVRES photographs were taken at about 6PM on the same day. In both cases, the windows are more than 75% unshaded and the same temperature range was used by the IR camera. Note the lower wall temperature in the PVRES home (due to exterior insulation), the lower glass and window frame temperature, and the lower direct sunlight temperature on the floor. All three of these factors contribute to the decreased cooling load offered by the PVRES house.

The temperature range is from 75°F (darkest colors) to 93°F (lightest colors).

Control House

PVRES House