| 摘要 |
FIELD: boiler equipment; heating air for boiler systems. ^ SUBSTANCE: proposed heater ensures increase of temperature head of heat-transfer agents due to delivery of air to sections from one side on all tiers. Stage-type tubular air heater includes columns divided into heat-exchange sections and tiers connected by means of inlet preheated and cold air collectors and gas collectors and bypass air boxes provided with mixing units and dispensing pipes; inlet preheated air collectors are divided in heat-exchange zone into sections by means of partitions having equalizing ports at each tier; dispensing pipes of mixing unit are connected in parallel with cold air inlet collectors. ^ EFFECT: enhanced reliability due to minimum deformation of air flow. ^ 2 dwg |
