Double-glazed glass and film-coated glass provide better thermal insulation compared to single-glazed glass windows.

Glass Window and thermal insulation

On hot sunny days, the light and heat coming through the glass window can raise indoor temperatures to very uncomfortable levels. This increase in temperature will neccessitate additional cooling - and higher electricity bills. Air.

The transparency of glass allows both the visible and ultra violet light to pass through it. When the light touches the surface, its energy is absorbed, reflected or scattered as heat. Since glass is a poor conductor of heat, the heat is trapped indoors and the room temperature increases creating a greenhouse effect.

Insulated or double-glazed glass consists of multiple glass panes assembled into a single unit. The gas or vacuum in between the glass panes will provide both thermal and acoustic insulation while still maintaining visual transparency. The use of film-coated or tinted single-glazed glass windows also provides better thermal insulation but the transparency of the glass is compromised.

Our hypothesis has been proven correct - double-glazed glass and film-coated glass provide better thermal insulation compared to single-glazed glass windows.

Glass windows provide better natural lighting but they also result in an increase of indoor temperatures. This will result in higher air conditioning costs. The heating that results from glass windows can also be reduced by planting trees near the windows, using fabric curtains or Venetian blinds.

To improve the reliability and accuracy of our results, a larger sample of participants should be used.

This science fair project may be repeated, this time, with a thermal source like an incandescent lamp to compare the thermal insulation of single-glazed windows, double-glazed windows and film-coated glass.

Modify the science project experiment, evaluating glass of different thickness.