Mobiltherm 605

Specifications

Brand

Mobil (ExxonMobil)

Category

Heat transfer fluids

Type

Closed loop, mineral

Manufacturer code

201560802020

Availability

On order

Typical characteristics

Manufacturer's description

Mobiltherm 600 Series are high performance heat transfer oils intended for closed, cold-oil-sealed indirect heating and cooling installations across a wide range of industrial processes; the series can also be used in open systems within grade-specific temperature limits. Formulated from highly refined base stocks resistant to thermal cracking and chemical oxidation, they are very thermally stable and capable of an extremely long service life without deposit formation or viscosity increase. Their heat transfer efficiency, pumpability at both start-up and operating temperatures, and specific heat and thermal conductivity all support rapid, efficient heat dissipation, while resistance to thermal cracking helps flash points remain stable in service. The series covers a range of bulk oil temperature limits by grade: Mobiltherm 603 up to 285 degrees C in closed systems (150 degrees C open); Mobiltherm 605 up to 315 degrees C closed (180 degrees C open); Mobiltherm 610 up to 315 degrees C closed (250 degrees C open); and Mobiltherm 611 up to 315 degrees C closed (275 degrees C open). These oils must be used only in forced-circulation systems, should not be mixed with other oils, and are not recommended for open systems where hot oil is exposed directly to air, since sprayed or leaked hot Mobiltherm oil may spontaneously ignite. Key benefits include high resistance to thermal cracking and decomposition, keeping systems free of sludge and coke deposits and reducing maintenance needs; excellent thermal properties for high heat transfer rates and lower operating costs; good thermal and oxidative stability for long, trouble-free service life; and good low-temperature fluidity for easy cold-system start-up. No formal specification or approval codes are listed on the datasheet.

Applications

• Application Considerations: Mobiltherm heat transfer oils should not be mixed with other oils since this may impair the excellent thermal and oxidation stability resulting in a change in other properties, and complicate analyses aimed at determining useful oil life. If the oils are used above their recommended maximum temperatures, vapor lock may result unless the system is designed to operate at the higher temperature by pressurizing with an inert gas such as nitrogen. At higher temperatures, fluid life will be shortened because the rate of thermal degradation which increases markedly as temperatures rise above the recommended limit. In well-designed systems the temperature of the oil film surrounding the heating element should be about 15ºC to 30ºC above the bulk oil temperature. If higher than this, the service life of the oil may be shortened and sludge and coke may be deposited which would interfere with the heat transfer rates. As with other mineral oils, Mobiltherm heat transfer oils should be used only in systems with forced circulation. Systems that depend on convection for circulation of the heat transfer medium do not provide a rapid enough flow to prevent local overheating and rapid deterioration of the oil. Further, these oils are not recommended for use in open systems where hot oil is exposed directly to the air. If they spray or escape from leakage points, hot Mobiltherm oils may spontaneously ignite. Mobiltherm 600 series can be used in open and closed installations, where the recommended bulk oil temperature ranges are: • Mobiltherm 603: Closed Systems (up to 285º C), Open Systems (up to 150º C) • Mobiltherm 605: Closed Systems (up to 315º C), Open Systems (up to 180º C) • Mobiltherm 610: Closed Systems (up to 315º C), Open systems (up to 250°C) • Mobi

Performance & benefits

• High resistance to thermal cracking andFree from sludge and coke deposits and minimum interference with heat transfer capability and minimized
• decompositionmaintenance needs
• Excellent thermal propertiesHigh heat transfer rates and improved operating efficiency and lower operating costs
• Good thermal and oxidative stabilityLong trouble free service life and reduced downtime
• Good low temperature fluidityEasy starting of cold systems

Standards & approvals

• DIN 51522 Q

  DIN 51522, class Q — heat-transfer oil

  Class Q of DIN 51522: a mineral heat-transfer oil for closed, non-pressurised heating systems.

• ISO 6743-12 QC

  Quenching oil, class QC — ISO 6743-12

  Class QC of ISO 6743-12 (family Q, heat treatment): a fast quenching oil for hardening steels that need rapid cooling.

Fits

• Industrial plant & equipment

Packaging

• 208 L
• bulk