. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. Economizers, W. F. Wurster 159. 166 Transactions of Am. Soc. of Engineers to 550 deg. At 150 per cent rating the temperature varies from about525 to 600 deg., and at 200 per cent rating from about 575 to 675 deg. The quantity of gas available depends upon the class of fuel and themethod of firing the same. In underfeed stoker practice about 60 lb. ofgas per hp. per hour are available for heating the feed water; with goodhand firing or with natural draft stokers about 80 lb. of gas per hp. pe
. Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers. Economizers, W. F. Wurster 159. 166 Transactions of Am. Soc. of Engineers to 550 deg. At 150 per cent rating the temperature varies from about525 to 600 deg., and at 200 per cent rating from about 575 to 675 deg. The quantity of gas available depends upon the class of fuel and themethod of firing the same. In underfeed stoker practice about 60 lb. ofgas per hp. per hour are available for heating the feed water; with goodhand firing or with natural draft stokers about 80 lb. of gas per hp. perhour are obtained, and with ordinary hand firing from 90 to 100 lb.
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