Generator Coolers (Air and Hydrogen Water Coolers)


The production range for generators includes:


- Air-water coolers available in several designs and with different materials: copper alloys, stainless steel and titanium

- Coolers for hydrogen in closed circuits. These units are particularly sturdy, have considerable dimensions and are designed to operate in presence of high vibrations

- Circular coil heat-exchangers to cool the bearing lubricating oil of large generators and turbines

- Medium head axial fans for cooling air circulation. The construction and the impeller are designed to operate with high rotating speed, up to 3.000 rpm and discontinuously. Strict acceptance tests are carried out in excess of the over speed test at 75 Hz

AIR TO AIR WATER (CACW)

Power rating range
- 80 ÷ 900 kW/each
Number of radial fans
- No. 1 ÷ No. 2 operation/each No. 1 ÷ No. 2 in operation/each + No. 1 stand-by/each
Cooler execution
- Single tubes
- Double tubes

For both the above executions (single & double tubes) and depending on the cooling water the following materials are used.


SINGLE TUBES EXECUTION DOUBLE TUBES EXECUTION
Tubes Other Tubes on Oil Side
  • - Copper*
  • - Copper*
  • - Admiralty brass
  • Inner Tubes on Water Side
  • - Cu/Ni 90/10 or 70/30
- Copper*
  • - Stainless Steel
  • - Admiralty brass
  • - Titanium
  • - Cu/Ni 90/10 or 70/30
Fins
  • - Stainless Steel
- Copper*
  • - Titanium
- Aluminium* Fins
Tube Plates Copper*
  • - C-Steel*
Aluminium*
  • - Naval brass or Muntz metal
Tube Plates on air side
  • - Cu/Ni 90/10 or 70/30
- C-Steel*
  • - Stainless Steel
- Naval brass
  • - Titanium
  • - Stainless Steel
  • - Titanium
  • Tube Plates on Water Side
  • - C-Steel*
  • - Naval brass* or Muntz metal
  • - Cu/Ni 90/10 or 70/30
  • - Stainless Steel
  • - Titanium

(*standard)



CACA generator cooler 1

585 kW power rating, equipped with No. 4 Comet axial fans.


CACA generator cooler 2

300 kW power rating, equipped with No. 4 Comet axial fans.