| 摘要 |
An atmospheric gas boiler has two vertically arranged end pieces and at least one middle piece arranged between them, as well as burner lances disposed in the lower part of the gas boiler. The pieces of the boiler through which hot water flows define a furnace, with secondary heating surfaces adjoining thereto. In order to lower the quantity of NOX arising during the combustion, the middle piece has a tongue through which hot water flows, extending into the furnace. The tongue possesses cooling ribs on the outside, which extend into the adjoining furnace spaces. |
