|
EXTENDED SURFACE HEAT EXCHANGE
COILS TECHNICAL SPECIFICATIONS |
| PRIMARY SURFACE: |
Copper alloy 122 manufactured to A.S. 1571 in two tube
sizes as follows. Safe working pressures exceed 2000 kPa. |
| 1/2" TUBE COILS: |
12.7mm seamless pure copper
0.41mm gauge, with other
heavier gauges on request. 31.75mm tube centres across the face, 27.5mm
row centres. |
| 5/8" TUBE COILS: |
15.88mm seamless pure copper 0.48mm gauge, 38.1mm
tube centres across the face, 33.0mm row centres. Optionally 15.9mm x
1.22mm wall for steam and high pressure applications. |
| SECONDARY SURFACE: |
Rippled edged, die formed with full collar covering
tube. Aluminum type alloy 8011-O Temper. 0.164mm thickness standard
with 0.020mm on request. Variable pitching of 236, 315, 393, 472 and 551
fins per meter. |
| COATINGS:
|
For adverse environments a methacrylate
acrylic air side coating is available giving protection against many
corrosive situations. |
| BONDING: |
Tubes mechanically expanded for positive high
conductivity metal to metal joint between tube and fin. |
| HEADERS: |
Heavy gauge hard drawn copper to AS1432 complete
with 1/8" BSP air vents for water coils. |
| CONNECTIONS: |
Heavy gauge hard drawn plain copper tails. Sizes to
suit coil requirements. |
| COIL FRAMES: |
Made from 1.6mm galvabond. Also available on
request aluminium, copper, stainless steel or brass. |
| BRAZING: |
Phoscalloy and 2-5% silver solder to AS1167
according to application. |
| TUBE END PLATES: |
Tight fit to stop air leakage. Also
available on
request with holes larger than tube to allow expansion and contraction
of tubes without stress. |