Therminol® 62 Heat Transfer Fluid
Description
Therminol 62 is a synthetic heat transfer fluid whose chemistry is custom contoured for high-performance, high-purity, low-pressure and exceptional thermal stability.
Performance Benefits
- True 325°C (620°F) Performance—Users can expect many years of reliable, trouble-free operation, even when operating continuously at the recommended bulk temperature.
- Fouling Resistant—Therminol 62 is specifically engineered to resist solids formation and system fouling. Your system will operate more reliably and is cost saving.
- Low Pressure—Therminol 62 is designed for typical liquid phase heat transfer fluid systems which operate at low pressures.
Typical Properties
| Property | Test Method | Typical Value, Units |
| Appearance | Water-white liquid | |
| Composition | Isopropyl biphenyl mixture | |
| Recommended Bulk Temperature | 325 °C (620 °F) | |
| Maximum Film Temperature | 355 °C (670 °F) | |
| Normal Boiling Point | 333 °C (631 °F) | |
| Pumpability @300 mm2/s (cSt) @ 2000 mm2/s (cSt) | -11 °C (12 °F) -23 °C (-9 °F) | |
| Flash Point COC PMCC | ASTM D92 ASTM D93 | 171 °C (340 °F) 160 °C (320 °F) |
| Autoignition Temperature | ASTM E659 DIN 51794 | 407 °C (765 °F) 433 °C (813 °F) |
| Pour Point | ASTM D 97 | -42 °C (-44°F) |
| Minimum liquid temperatures for fully developed turbulent flow (NRe > 10000) 10 ft/s, 1-in. tube (3.048 m/s, 2.54-cm tube) 20 ft/s, 1-in. tube (6.096 m/s, 2.54-cm tube) | 50 °C (122 °F) 31 °C (88 °F) | |
| Minimum liquid temperatures for transitional region flow, (NRe > 2000) 10 ft/s, 1-in. tube (3.048 m/s, 2.54-cm tube) 20 ft/s, 1-in. tube (6.096 m/s, 2.54-cm tube) | 11 °C (52 °F) 4 °C (39 °F) | |
| Heat of Vaporisationa | 263.9 kJ/kg (113.6 Btu/lb) | |
| Coefficient of thermal expansion @ 200°C | 0.001000 /°C (0.000556 /°F) | |
| Viscosity, Kinematic @ 100°C @ 40°C | ASTM D 445 ASTM D 445 | 2.52 cSt, mm2/s 10.7 cSt, mm2/s |
| Liquid Density @ 25°C | ASTM D 4052 | 951.1 kg/m3 (7.94 lb/gal) |
| Acidity | ASTM D 664 | <0.2 mg KOH/g |
| Molecular Weight (Average) | 252 | |
| Pseudocritical temperature | 487 °C (908 °F) | |
| Pseudocritical pressure | 15.0 bar (217.5 psia) | |
| Pseudocritical density | 269.4 kg/m3 (16.82 lb/ft3) | |
| Copper Corrosion | ASTM D 130 | <<1a |
| Moisture Content, maximum | ASTM E-203 | 200 ppm |
| Dielectric Constant @ 23°C | ASTM D-924 | 2.53 |
| Chlorine | DIN 51577 | <10 ppm |
Key Attributes
- Low Pressure
- Fouling Resistant
- True 620ºF (325º C) Performance
Applications
- Asphalt
- Biomass – orc
- Cement – waste heat recovery + orc
- Chemicals & petrochemicals
- Gas to liquid (gtl)
- HTF – aluminum foil printing
- HTF – bakery
- HTF – production of biodiesel
- Hybrid solar + orc
- Oil or gas processing
- Polymer & plastic
- Solar csp
- Wood panels