de and seven on the opposite side . By this arrangement the currents of air ( proceeding from these stay tubes ) do not interfere with each other , as would be the case were the tubes placed exactly opposite each other , when the current of the one impinges against the cur rent of the other ,… … ties in keeping the apparatus in Fig . 394 . — Steam - inducted Currents of Air . efficient working Order . a , Fire box . b , Steam pipe and jets . cc , Tubes . Steam highly superheated has been blown over and through the coal in the fire box for the Sup pression of smoke , and when this plan is…
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