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Open-loop
Active solar systems use pumps to circulatehousehold water through the
collectors ,This design is efficient and lowers operating costs
but is not appropriate if your water is hard or acidicbecause scale and corrosion quickly disable the system.
These open-loop systems are popular in nonfreezing climates. They
should never be installed in climates that experience freezing
temperatures for sustained periods. You can install them in mild but
occasionally freezing climates,But you must consider freeze protection. |