AKH types boilers having two fire-tubes for middle pressure,
producing superheated steam

Types
Naming
AKH- 25/12T-240 40/13T-215 44/13T-215T
Rated capacity of boilers kW 16825 26921 29595
Produced steam t/h 25 40 44
Highest allowable pressure Mpa 1,2 1,3 1,3
Heated surface of boiler's drum m2 592 957 1009
Heated surface of superheater m2 155 101 101
Evaporation surface m2 20,5 25 26,5
Steam volume liter 12000 14415 15000
Water volume m3 41800 57685 60000
Operating efficiency % 94 94 93,5
Feedwater temperature oC 105

Flue gas temperature
(it depends on the highest
allowable pressure)

oC 125 112 - 138 115 - 142
Saturated steam temperature
(it depends on the highest
allowable pressure)
oC 240 215 215
Furnace (chamber) resistance mbar 13 14 14
Draft demand mbar 0
Burner fuel consumption
Natural gas:  34,2 MJ/Nm3
Oil: 41,3 MJ/kg

Nm3/h
1900 3040 3344
kg/h 1573 2517 2769
Electric power consumption kW 2 x 30
Boiler's mass
(without water and burner)
ton 71 91,5 93,5