Areas of application
The reliable characterization of heat transfer fluids enables the safe design and efficient operation of thermal systems. Precise property data on freeze protection, viscosity, and heat transfer improve process stability and support the selection of suitable heat transfer fluids for demanding operating conditions.
Objective
Based on our extensive experience, we are pleased to offer support in the selection of application-specific heat transfer fluids. Below, you will find a selection of available test methods for the characterization and qualification of new heat transfer fluids.
Description
The following determination methods are used to investigate key thermophysical properties of heat transfer fluids as a function of temperature. Based on the measured data obtained, reliable conclusions can be drawn regarding the thermal and rheological behavior as well as the suitability of heat transfer fluids under realistic operating conditions.
Crystallization Temperature and Freeze Protection
- According to ASTM D 1177
- Pressure-resistant glass autoclave, transparent thermostat
- Temperature range: -65 °C to room temperature
Vapor Pressure
- Vapor pressure measurement cell with magnetic coupling
- Temperature range: -80 to 90 °C
- Pressure range: 0 to 3 bar
Density
- According to DIN 51757
- Oscillating U-tube density meter DMA HPM (Anton Paar)
- Temperature range: -10 (-40) to 140 °C
- Pressure range: 0 to 160 bar
- Measurement range: 600 – 1,300 kg · m-3 (15,000 mm2 · s-1)
Dynamic / Kinematic Viscosity
- According to ASTM D 7483
- Vibrating piston viscometer (Cambridge Viscosity)
- Temperature range: -40 to 140 °C
- Pressure range: 0 to 160 bar
- Measurement range: 0.2 to 20,000 mPa · s
Specific Heat Capacity
- According to ASTM D 3947 and ASTM E 1269
- DSC µDSC7 evo (Setaram) and DSC Q 200 (TA Instruments)
- Temperature range: -40 to 120 °C and -90 to 300 °C, respectively
- Pressure range: 0 to 100 bar
Thermal Conductivity
- Measurement cell for the steady-state concentric cylinder method
- Temperature range: -40 to 140 °C
- Pressure range: 0 to 30 bar
