Therminol® VP1 Heat Transfer Fluid
Description
Therminol VP-1 heat transfer fluid is an ultra-high temperature synthetic heat transfer fluid designed to meet the demanding requirements of vapor phase systems or liquid phase systems.
Performance Benefits
- Superb Heat Transfer Properties—Therminol VP-1 is a synthetic heat transfer fluid which combines exceptional thermal stability and low viscosity for effective, dependable, uniform performance in a wide optimum use range of 12° to 400°C (54° to 750°F ). Therminol VP-1 has the highest thermal stability of all organic heat transfer fluids.
- Low Viscosity—Therminol VP-1 has a low viscosity to 12°C (54°F) because of its crystallization point of 12°C (54°F), this fluid may need tracing in colder climates to prevent operational problems.
- Vapor Phase Heat Transfer Fluid—Therminol VP-1 is an eutectic mixture of diphenyl oxide (DPO) and biphenyl. It can be used as a liquid heat transfer fluid or as a boiling-condensing heat transfer medium up to its maximum use temperature. It is miscible and interchangeable (for top-up or design purposes) with other similarly constituted diphenyl-oxide (DPO)/biphenyl fluids.
- Precise Temperature Control—Able to operate as a vapor-phase heat transfer fluid, thus Therminol VP-1 is excellent for use in heat transfer fluid systems requiring very precise temperature control.
Typical Properties
| Property | Test Method | Typical Value, Units |
| Appearance | Clear, water white liquid | |
| Composition | Biphenyl/diphenyl oxide (DPO) eutectic mixture | |
| Maximum bulk temperature | 400 °C (750 °F) | |
| Maximum Film Temperature | 430 ºC (800 ºF) | |
| Normal Boiling Point | 257 °C (495 °F) | |
| Flash Point COC PMCC | ASTM D92 ASTM D93 | 124 °C (255 °F) 110 °C (230 °F) |
| Crystallization Point | 12 °C (54 °F) | |
| Autoignition Temperature | ASTM E659 DIN 51794 | 601 ºC (1114 ºF) 621 ºC (1150 ºF) |
| Coefficient of thermal expansion @ 200°C | 0.000979 /°C (0.000544 /°F) | |
| Liquid Density @ 15ºC @ 25ºC | ASTM D 4052 ASTM D 4052 | 1068 kg/m3 (8.91 lb/gal) 1060 kg/m3 (8.85 lb/gal) |
| Acidity | ASTM D 664 | <0.2 mg KOH/g |
| Molecular Weight (Average) | 166 | |
| Pseudocritical temperature | 499 °C (930 °F) | |
| Pseudocritical pressure | 33.1 bar (480 psia) | |
| Pseudocritical density | 327 kg/m3 (20.4 lb/ft3) | |
| Sulfur Content | ASTM D-7691 | <10 ppm |
| Copper Corrosion | ASTM D 130 | <<1a |
| Moisture Content, maximum | ASTM E-203 | 300 ppm |
| Volume contraction upon freezing | 6.27 % | |
| Volume expansion upon melting | 6.69 % | |
| Dielectric Constant @ 23°C | ASTM D-924 | 3.35 |
| Surface Tensionb @ 25°C | 36.6 dynes/cm |
Key Attributes
- Low Viscosity
- Accurate Temperature Control
- Superb Heat Transfer Properties
- Vapor Phase Heat Transfer Fluid
Applications
- htf – fine chemicals
- htf – production of bioalcohol
- htf – production of biodiesel
- Adhesives
- Calendar roll heating
- Chemicals & petrochemicals
- Distillation
- Extruding
- Fatty acid
- Fibers
- Formaldehyde
- Gas to liquid (gtl)
- Gas treatment / sweetening / desulpheriz
- Lube oil refining
- Methyl methyl acrylate (mma)
- Polyester (pet)
- Refining
- Resins
- Solar csp
- Specialty and batch chemical production
- Specialty chemicals
- Styrene
- Tall oil
- Terephthalic acid (pta)
- Waste heat recover + orc