Photographs bypass flue

Fig. 22.2. Photograph of gas bypass flue around cross flow gas-to-gas heat exchanger. In this case, the amount of bypass is controlled by manually adjusting a butterfly valve in the bypass flue (note chain below the valve). In most cases, the valve is controlled automatically by a thermocouple placed just beyond the heat exchanger exit gas/bypass gas re-combination point.

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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