COMBINED HEAT AND POWER APPARATUS

摘要

A shell steam boiler (2) comprises a furnace tube (10) having an entrance (32) which contains a gas burner (68) and also receives the hot exhaust gases from a small gas turbine (34) giving an output, on a power take off shaft (58) from a power turbine (56), of 0.5 MW or loss which drives an electrical power generator (60). Hot heating gases from the gas turbine (34) and/or the burner (68) pass down the furnace tube (10) and then through a first group of pass tubes (16) and finally through a second group of pass tubes (22) to an enclosure (26) comprising a flue (30). A driven fan (72) in the enclosure (26) acts to draw the heating gases through the boiler and promotes a good flow of those gases.