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  1. afm

    anti-freeze & galvanized pipes

    I’ve got an old run-around-coil heat-recovery system, which is handling about 12 cu m/sec of air. Heat is extracted from the exhaust air streams with 4-row coils and the water is pumped to 6-row coils to heat the supply air. The system seems to recover about 50% of the available heat, when it...

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