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

Types
Naming		 AKH- 2/12T 2,5/12T 3/12T 3,5/12T 4/12T 5/12T 6/12T 7/12T 8/12T 9/14T 10/12T 12/12T 13/12T 13/15T-
240		 15/13T-230 18/12T-
230		 20/12T-
210		 25/12T-
220
Rated capacity of boilers kW 1336 1670 2000 2350 2670 3340 4008 4676 5344 6012 6680 8020 8600 8625 10000 12000 13360  
Produced steam t/h 2 2,5 3 3,5 4 5 6 7 8 9 10 12 13 13 15 18 20  
Highest allowable pressure Mpa 1,2 1,4 1,2 1,5 1,3 1,2 1,2 Under construction
Heated surface of boiler's drum m2 58,42 66,8 66,8 93,6 93,6 114,4 157,88 166 166 235 271,35 279,45 291 303 371 440 538  
Heated surface of superheater m2 4,28 4,28 4,28 6,1 6,1 8,46 12,42 12,42 12,42 17,4 21,4 21,4 21,4 51,67 56,8 68,8 68,8  
Evaporation surface m2 5,2 5,95 5,95 7,1 7,1 8,1 9,9 11,67 11,67 13,1 13,96 14,35 14,5 15,1 17,4 18 20  
Steam volume liter 1450 1650 1650 2600 2600 2800 3480 3625 3625 6000 6450 6650 6695 6950 8700 7650 8500  
Water volume m3 4010 4590 4590 8120 8120 7600 10870 11325 11325 17660 17050 17550 18505 19250 25500 30870 34300  
Operating efficiency % 91 ±1
Feedwater temperature oC 105

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

oC 190 - 220
Saturated steam temperature
(it depends on the highest
allowable pressure) 		oC 190 - 240
Furnace (chamber) resistance mbar 4 4 5 8 9 9 10 10 10 10 10 10 13 13 13 14 14  
Draft demand mbar 0
Burner fuel consumption
Natural gas:  34,2 MJ/Nm3
Oil: 41,3 MJ/kg
Nm3/h
155
193
231
272
309
386
464
541
618
695
773
928
995
1005
1156
1388
1545
kg/h 128 160 192 225 256 320 384 448 512 576 640 769 824 832 958 1150 1280  
Electric power consumption kW 8,5 8,5 8,5 8,5 8,5 11 30 30 30 35 35 35 35 35 35 40 40  
Boiler's mass
(without water and burner)		 ton 9,5 9,8 10 14,7 15 16,5 18,4 19 19 30 31 31,5 32 32 40 54 58