| |||||
 | |||||
| |||||
|
Typical diffusion-bonded heat exchanger characteristics
Diffusion-bonded exchangers are highly robust, highly compact plate type heat exchangers, however they operate outside the usual limitations of other plate type exchangers. Due to their unique construction process, they are ideally suited to high pressure, high temperature applications more traditionally serviced by shell and tube heat exchangers.
The table below illustrates the typical characteristics and capabilities of diffusion-bonded. However the design of every exchanger is bespoke and extremely versatile, depending on customer specifications. As such, these figures are intended as a guide only.
| Unit weight range |
1 kg to 60 tonnes as a single unit |
|
Maximum design pressure |
Current maximum design pressure 650 bar (9500 psi) |
|
Design temperature range |
Currently from 2°K to 1160°K (-450°F to 1650°F) |
|
Maximum nozzle size |
900 mm NB (36 in NB) |
|
Maximum surface area |
10,000 m2 (108,000 ft2) per PCHE |
| Typical area/unit volume |
1300 m2/m3 at 100 bar (400 ft2/ft3 at 1450 psi) |
|
Minimum temperature approach |
1°C (typically 3 - 5°C) 2°F (typically 5 - 10°F) |
|
Heat exchanger effectiveness |
up to 98% |
|
Typical overall heat transfer coefficients |
LP gas cooler 500 - 1,000 W/m2K (90 - 180 Btu/hrft2°F) |
|
Plate thickness |
0.5 mm(1) to 5.0 mm |
|
Passage width |
0.5 mm to 5.0 mm(2) |
|
Typical Reynolds number range |
Gases: 1,000 - 100,000 |
(1) 0.2 mm for special cases
(2) >10 mm for non-semicircular passages
Typical PCHE Characteristics
PCHEs are highly robust, highly compact plate type heat exchangers, however they operate outside the usual limitations of other plate type exchangers. Due to their unique construction process, PCHEs are ideally suited to high pressure, high temperature applications more traditionally serviced by shell and tube heat exchangers.
The table below illustrates the typical characteristics and capabilities of Printed Circuit Heat Exchangers. However the design of every PCHE is bespoke and extremely versatile, depending on customer specifications. As such, these figures are intended as a guide only.
|
