Design of coiled double-pipe heat exchangers / coaxial tube heat exchangers (KOAX)
Within the COIL module package (coil type heat exchangers), the KOAX module package can be purchased as an additional option for the thermal and hydraulic design of a coiled double-pipe heat exchanger, in accordance with the calculation regulations of the VDI Heat Atlas.
Selection mask in COIL
Fundamentals
The calculations are based on the calculation regulations shown in the VDI Heat Atlas.
- G3: Heat transfer in flow through coils
- L1.2: Pressure drop in flow through coils
The media are single-phase (liquid or gaseous) or condensing pure substances (pure substance condensation, isothermal condensation). Flow direction can be countercurrent or co-current. The properties of the media used are provided by LV properties modules and calculated for the mean temperatures and pressures.
| Properties contained in the standard package KOAX |
Module |
| Water and steam |
H2O |
| Seawater |
Sawa |
| Saturated steam Condensation |
H2O |
| Natural gas H, L and any composition |
EGAS |
| Flue gas |
RGAS |
| Ammonia and ammonia condensation |
NH3 |
| 12 typical machine oils |
OEL |
| 120 Thermal oils |
T-OIL |
| Air (dry) |
LUFT |
| ® Antifrogens N, L, KF and SOL |
GLYC |
| Free input of properties |
S-DAT |
| Refrigerants |
FRIG |
| Further properties on request |
| ® registered trademark of Clariant GmbH |
Standard package: on request
|
see also:
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