Fundamentals of Passive Solar Design

Explore heat transfer concepts: conduction, convection, and radiation, governed by the second law. Understand how passive solar design uses these modes to warm surfaces and improve comfort.

Select thermal masses with high specific heat capacity and moderate conductivity to store heat and release it slowly, using masonry walls rather than wood.

Exploit the greenhouse effect in passive solar design by using large glazing to capture solar heat; Lorimer 70 glass enhances infrared blocking while preserving visible light.

Orient the building to maximize winter sun and unobstructed light from 9 am to 3 pm, using shade checks and solar maps to identify sunny site points.

Discover how building shape affects passive solar performance by aligning compact, east–west footprints with climate, while optimizing solar gain, thermal mass, and reduced north facade.

Place high heating and lighting spaces on the south facade to maximize sunlight, buffer north zones with corridors, and keep room depth within two to 2.5 times window height.

Place windows to maximize south-facing glazing for solar heat gains—aim for 60 percent south glazing—while minimizing winter losses and limiting north facade openings, with single/double glazing as climate requires.

Choose the best passive solar system by matching direct gain, thermal storage walls, or greenhouse setups to building orientation, glazing, and thermal mass.

Direct gain uses south-facing solar windows with shading to prevent overheating. Use thermal mass and water walls for storage, guided by a solar map and winter solstice sun angles.

Master sizing an indirect gain Trombe wall, choosing thickness, material, and surface color to store heat and release gradually, while considering exterior reflectors and movable insulation for cold climates.

Size roof pond systems for indirect gain to balance heating and cooling across climates and glazing types. Ensure tight seals, panel tracks, insulating panels that act as reflectors when open.

Integrate an attached greenhouse to maximize isolated solar gain, size glazing area, and connect adjacent spaces with a thermal wall to store heat as mass.

Conclude your study of passive solar energy systems by reviewing the design and application covered in this course. Contact via email for questions, and anticipate joining the next course.