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What is the difference between a passive system and an active system?

April 26, 2017active difference passive system

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What is the difference between a passive system and an active system?

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In a passive solar hot water system, the system has no pumps or motors and is designed on basic principals of physics — hot water rises and cold water falls. Therefore, through that basic principal, water circulates through the system to provide hot water for the property. In an active system, a circulating pump is utilized to pump water through the system.