ID Fan Overhaul
  • Induced Draft Fan (IDF)

PLTU 1 Jatim Pacitan  memiliki 2 set ID Fan dengan kapasitas 2×50 %. ID Fan berfungsi untuk mempertahankan pressure di dalam furnace boiler supaya bernilai negatif dengan cara menghisap atau mengalirkan gas hasil pembakaran batubara pada furnace menuju stack dengan cara paksa oleh fan (ID Fan). Adapun spesifikasi teknis dari ID Fan ditunjukkan oleh Tabel 3.3 berikut ini.

NO NAME UNIT TB condition BMCR condition Guaranteed condition
Designed coal Rank Designed coal   Designed coal
1 Inlet flow m3/s 293.8 242.8 231.6
2 Fan full Pressure Pa 5527 4252 4135
3 Inlet air Temperature 122.3 122.3 122.3
4 Inlet air Temperature kg/m3 0.8778 0.8778 0.8778
5 Fan shaft Power Kw 1936 1199 1132
6 full pressure effiency 83 86 84
7 Air fan rotation speed r/min 990 990 990

Tabel 3.3 Spesifikasi Teknis Induced Draft Fan

Data technical parameters:

  1. Impeller external diameter                  : 2.6 m
  2. Impeller weight                                   : 1332 kg
  3. Max. weight when installed                : 13830 kg
  4. Hoisting weight when maintained      : 2830 kg
  5. Total fan weight                                  : 29688 kg(motor and coupler not included)
  6. Fan GD2                                             : 6300 kgm2
  7. Electric actuator torque                       : 8000 Nm

Cooling fan type  G9-19№5A one set at left and right 90°

  1. Cooling fan speed                               : 2960 r/min
  2. Cooling fan power                                          : two sets 22kW

Motor parameter

  1. Motor type                                          : YKK710-6TH-W
  2. Rated power                                       : 2150 kW
  3. Rated speed                                        : 990 r/min
  4. Rated voltage                                      : 6300 V
Gambar 3.9 Diagram Blok Induced Draft Fan