mercury oils

Heat Transfer Fluids

OUR PRODUCTS

Hitherm B Rvn no : 1

Diathermic fluid
Description

Hitherm B is a high performance heat transfer oil recommended for most installations. It meets the requested qualities for diathermic fluids:

  • Thermal stability
  • Chemical stability
  • Low vapour tension
  • Fully neutral towards metals
  • Non toxic
  • Benefits
  • Viscous oil from highly refined paraffinic base oil

Benefits

  • Higher resistance against thermal cracking than conventional (higher viscosity) fluid
  • Oxidation resistant ?     Faster transfer to turbulent flow also during start-up operations thanks to good low temperature fluidity
  • Less energy consumption resulting in reduced operating costs
  • Extended service and fluid life

Applications
Hitherm B is recommended for heat transfer systems in a generator equipped with expansion vessels and a proper circulation speed, where the maximum oil temperature does not exceed 315 °C.

Typical performance data

  Test method B22 B32 B100
Viscosity @ 40 °C, cSt ASTM D445 21.8 30.3 95.4
Viscosity @ 100 °C, cSt ASTM D445 4 5.4  
Density @ 20 °C, kg/m³ ASTM D4052 0.860 0.870 0.883
Density @ 100 °C, kg/m³ ASTM D4052 0.810 0.812  
Viscosity index ASTM D2270 96 113  
Flash point, COC,°C ASTM D92 200 208 259
Pour point, °C ASTM D6892 -15 -15 -12
TAN, KOH/kg ASTM D664 0.01 0.01 <0,03
Vapour tension @ 200°C, mbar   9 2  
Vapour tension @ 250°C, mbar   38 16  
Vapour tension @ 300°C, mbar   135 55  

 

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