The Aalborg CHS (formerly SUNROD™ CHS) boiler for hot water has a unique pin tube extended heating surface. The vertical cylindrical body consists of a furnace and a convection part integrated with the drum.
The furnace consists of a gas tight membrane wall. A number of downcomer tubes connecting the drum to the ring header ensure good natural circulation at all loads through the furnace tubes.
The boiler is side-fired which makes the boiler very easy to ventilate and gives an operation and maintenance friendly location of the burner and its controls.
The incoming system water is mixed into the boiler drum by means of a spreader with nozzles. The hot water generation is practically instant from start. The response from load variation is very fast.
The boiler can be inspected on the water side through the manhole in the pressure vessel and through the hand holes in the ring header. On the gas side, the boiler can be inspected from the flue gas box at the top of the boiler and from the furnace.
The standard cleaning method is by water washing, which efficiently restores the original boiler performance data. After cleaning, it is possible to make a visual inspection of 100% of all the heating surfaces, a very important advantage when trying to reach highest possible efficiency during the boiler's entire lifetime.
Capacity, Dimensions & Weight
Thermal output at 100% MCR
Design pressure
Height "H"
Diameter "D" (incl. insulation)
Width "W1" Heating coil removal
Width "W2" Burner removal *
Flue gas outlet connected
Boiler dry weight
**
MW
bar (g)
mm
mm
mm
mm
DN
ton
10
18
7,300
3,000
2,015
3,320
700
19.0
11
18
7,800
3,000
2,015
3,440
700
20.3
14
18
7,900
3,300
2,165
3,595
900
24.7
17
18
8,700
3,300
2,165
3,820
900
27.0
21
18
9,000
3,600
2,315
4,000
1,000
32.9
24
18
9,620
3,900
2,465
4,775
1,000
38.4
28
18
9,660
4,100
2,565
4,735
1,200
43.3
30 ***
18
9,660
4,100
2,565
5,690
1,200
45.7
* With Aalborg KBSA steam atomizing burner (if oil-fired)
** Without burner and accessories.
*** The 30 MW boiler has extended furnace. Operating temperature up to 200 °C
