Which feature is an example of passive solar design in buildings?

Which feature is an example of passive solar design in buildings?

• A. Skylights with blinds.
• B. South-facing windows.
• C. Triple-glazed windows.
• D. Insulated exterior walls.

Answer: (B)

Passive solar design aims to utilize natural energy from the sun to maintain comfortable temperatures in a building without the need for active mechanical systems. South-facing windows exemplify this principle as they are strategically positioned to capture sunlight, particularly during the winter months when the sun is lower in the sky. This orientation maximizes solar gain, allowing natural light and warmth to enter the building, which helps reduce the need for heating. In addition to improving indoor comfort, south-facing windows play a crucial role in energy efficiency by leveraging solar energy for passive heating. When designed with appropriate overhangs or shading devices, they can also minimize heat gain during the hotter months, contributing to a balanced indoor environment year-round. Other listed features, while beneficial for energy efficiency and comfort, do not exemplify passive solar design in the same way. Skylights with blinds can provide light but do not inherently utilize solar energy for heating. Triple-glazed windows improve insulation and are great for minimizing heat loss, but they don’t actively harness solar energy. Insulated exterior walls offer thermal mass but do not direct solar gains. Therefore, south-facing windows are the quintessential example of passive solar design, emphasizing the building's interaction with solar resources for temperature regulation.

Passive solar design aims to utilize natural energy from the sun to maintain comfortable temperatures in a building without the need for active mechanical systems. South-facing windows exemplify this principle as they are strategically positioned to capture sunlight, particularly during the winter months when the sun is lower in the sky. This orientation maximizes solar gain, allowing natural light and warmth to enter the building, which helps reduce the need for heating.

In addition to improving indoor comfort, south-facing windows play a crucial role in energy efficiency by leveraging solar energy for passive heating. When designed with appropriate overhangs or shading devices, they can also minimize heat gain during the hotter months, contributing to a balanced indoor environment year-round.

Other listed features, while beneficial for energy efficiency and comfort, do not exemplify passive solar design in the same way. Skylights with blinds can provide light but do not inherently utilize solar energy for heating. Triple-glazed windows improve insulation and are great for minimizing heat loss, but they don’t actively harness solar energy. Insulated exterior walls offer thermal mass but do not direct solar gains. Therefore, south-facing windows are the quintessential example of passive solar design, emphasizing the building's interaction with solar resources for temperature regulation.