Table of Contents
Cooling data
Water
Water is generally 16°c in and 20°c out for air cooling. Some site still use low temperature water, between 6°c to 12°c, but this often result with condensation and energy losses.
Warm water is generally 40°c in and 50-60°c out for direct water cooling equipments.
Water specs:
| Formulae | Melting point | Boiling point | Heat Capacity | Viscosity | Density | Electrical conductivity (pure water at 25°c) |
|---|---|---|---|---|---|---|
| H2O | 0.00°C (32.00°F; 273.15K) | 100°C (212°F; 373K) | 4.1818 J/(g·K) | 8.90×10−4 Pa·s | 998.2 kg/m3 | 0.055 µS/cm |
Hydraulic
Correspondence table between country units:
Vapor
In french, but easy to use even for english with small translation :
Glycol
Ethylene glycol
Ethylene glycol is wildly used in industry.
Ethylene glycol is harmful and should be manipulated with care. Note that it’s “sugar” taste makes it attractive, and so, dangerous for children and animals.
| Formulae | Melting point | Boiling point | Viscosity | Density | Flags |
|---|---|---|---|---|---|
| C2H6O2 | −12.9°C(8.8°F; 260.2 K) | 197.3°C(387.1°F; 470.4 K) | 1.61 × 10−2 N*s / m2 | 1.1132 g/cm³ |   |
Propylene glycol
| Formulae | Melting point | Boiling point | Viscosity | Density | Flags |
|---|---|---|---|---|---|
| C3H8O2 | −59°C(−74°F; 214 K) | 188.2°C(370.8°F; 461.3 K) | 0.042 Pa·s | 1.036 g/cm³ |  |
134a
Air
Humidity/Psychrometrics
All informations and charts are provided here :
http://en.wikipedia.org/wiki/Psychrometrics
Detailed chart :
