It must have been in Iran that Frank Lloyd Wright got his brilliant idea for cooling a house... During the summer months, the sunken fireplace hearth was filled with water. Down-draft air movement from the chimney circulates over this pool to cool... This unusual fireplace has a summer-cooling as well as winter-heating function. (Ken Kern)

It must have been in Iran that Frank Lloyd Wright got his brilliant idea for cooling a house... During the summer months, the sunken fireplace hearth was filled with water. Down-draft air movement from the chimney circulates over this pool to cool... This unusual fireplace has a summer-cooling as well as winter-heating function.

Ken Kern

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