Affordable passive solar homes: low-cost, compact designs

active solar affordable architectural attic avoid bedroom buffer building ceiling clerestory closet color compact homes concrete construction convection cost cross ventilation daylighting destratification dining direct gain direct solar gains domestic hot water drywall earth berms earth-sheltered economic effective entry door eutectic eutectic salts exterior furniture garage glass glazing heat loss heat pumps increase inductive ventilation interior space kitchen living area living room living spaces living unit located louvered masonry materials ment minimal movable insulation needed optimize passive solar system plans and designs plenum pollution protection R-value radon reduce reflective roof shading side-sliding sloping solar access solar collectors solar gains solar heat solar radiation solar system south-facing Square Feet Square Meters stacked stairway summer sunspace superinsulated surface temperature thermal bridging thermal mass floor thermal storage thermosiphon tion trombe wall upper level vent Ventilating and Cooling wind winter zoning