| FRAGOLTHERM® W-VR | ||||
FRAGOLTHERM® W-VR
FRAGOLTHERM® W-VRDichte 20 °C:
Density 20 °C:
1.032 - 1.035 kg/m³
Kin. Viskosität 40 °C:
Kin. viscosity 40 °C:
ca. 2-3 mm²/s
Pourpoint:
Pour Point:
-
Untere Einsatzgrenze:
Minimal operating temperature:
-28 °C
Vorlauftemperatur max.:
Bulk temperature max.:
200 °C
Filmtemperatur max.:
Film temperature max.:
-
Siedebeginn:
Boiling Point:
102 °C bis 105 °C
Flammpunkt:
Flash Point:
-
Wassergefährdungsklasse:
Water hazard classification:
1
Freigaben:
Approval:
-
|
-28 °C |
|
|
200 °C |
Application
The content of corrosion inhibitors in FRAGOLTHERM® W-VR protects all metal materials conventionally used in solar technology and mixing installations on a long-term and reliable basis against corrosion, ageing and incrustation. FRAGOLTHERM® W-VR keeps the heat transfer surfaces clean and in this way guarantees a consistently high degree of efficiency of the plant to be protected.
If the following conditions are observed, FRAGOLTHERM® W-VR can be used in solar plants that reach standstill temperatures of up to 320 °C:
- Prior to reaching the maximum standstill temperature, it must be possible to fully discharge the FRAGOLTHERM® W-VR present in the collectors at the start of the stagnation state by means of evaporation, and capture this in the expansion tank.
- FRAGOLTHERM® W-VR must not be exposed to constant temperatures of more than 170 °C.
Temperatures above 200 °C lead to a slow thermal decomposition of the 1.2 propylene glycol that can be detected by dark colouration of the heat transfer fluid. This can severely reduce the service life of the medium.
Stoffdaten
Technical Data
FRAGOLTHERM® W-VR
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