Good, clear presentation of Seasonal Window Considerations for Passive Solar homes. Windows must be climate sensitive: check to see if they show be double or triple paned, or even covered with a thermal shade in coldest climates.
passive solar heating/cooling. Even better illustration of passive solar design principles. - http://www.beautifuldiy.net/passive-solar-heatingcooling-even-better-illustration-of-passive-solar-design-principles