Paratherm™ MR Heat Transfer Fluid

Single Fluid Heating/Cooling – Non-Toxic
The Paratherm MR mid-range heat transfer fluid is rated for service from 2.2°c to 287°c. It is efficient across the temperature range, thermally stable and cost-effective. Non-aromatic and non-toxic, the food-grade fluid is safe to use and is easy to dispose. Used or contaminated fluid can be safely combined with spent lubricating oils and recycled locally. Designed for a broad variety of applications such as batch reactors, laminating lines and plastics mould temperature control, the Paratherm MR® is tough and durable. Engineered to provide outstanding performance under demanding conditions, it is easy and safe to handle – a pleasant alternative to synthetic aromatic fluids.
- Single fluid heating and cooling from 2.2°c to 287°c
- Non-aromatic/low odour composition reduces worker exposure and environmental issues
- Extends low-temperature capabilities of standard hot oil temperature control units
Environmental Safety
The MR fluid is plant friendly and safe to use. In the event of a release, the same simple clean-up procedures used for spills of light lubricating oils can be employed. Once gathered, it can be combined with spent lube oils and sent to the local oil recycler. The crystal-clear Paratherm MR fluid contains no SARA-reportable substances such as chlorinated hydrocarbons, aromatics, heavy metals, or sulphur or nitrogen compounds.
Fluid Toxicity
The Paratherm MR fluid is non-toxic. Where conventional fluids can produce dermatitis, the fluid is not expected to cause skin irritation on contact. And unlike other heat/cool liquids, the MR fluid emits no pungent or noxious odours. See the Material Safety Data Sheet (MSDS) before using this product.
Vapour Pressure
The MR fluid has an extraordinarily low vapour pressure — a fraction of an atmosphere at its maximum operating temperature of 287°C. This permits the designer considerable latitude in the choice of lower-cost equipment that does not need to be pressurized to prevent fluid boiling and pump cavitation.
Efficiency
The lower a heat transfer fluid’s viscosity, the less energy will be required to pump it through the system. Paratherm MR fluid’s viscosity is among the lowest of available heat/cool fluids. This, and the fluid’s exceptionally low pressure drop means that less horsepower is needed for a given duty, and that a smaller pump and motor can be specified. And, lower power consumption continues to produce savings year after year.
Chemical Name | Linear Alkene |
Appearance | Water White Liquid |
Odour | Slight Odour |
Maximum Recommended Film Temperature | 316°C/600°F |
Maximum rec’d operating temp – fired heaters | 288°C/550°F |
Maximum rec’d operating temp – all others | 304°C/580°F |
Minimum operating temperature 20 mPa-s (20 cPs) | 3°C/38°F |
Minimum start-up temp 300 mPa-s (300 cPs) | -38°C/-37°F |
Viscosity @ 60°F/15.5°C mm2/sec (sSt) | 13 |
Density @ 60°F/15.5°C kg/m3 (lb/gal ) | 804 (6.7) |
Flash Point Pensky-Martens Closed Cup (D93) | >149°C/300°F |
Boiling Point (101 kPa/14.7 psia) | >343°C/650°F |
Vapour Pressure @ max operating temp kPa (psia) | 61 (8.4) |
% Volume expansion over rec’d operating temp per 100°C (°F) | 7.9 (4.4) |
Average Molecular Weight | 300 |
Heat of Combustion (approximate) kJ/kg (BTU/lb) | 46,000 (20,000) |
Heat of Vapourization (approximate) kJ/kg (BTU/lb) | 226 (115) |
* These are typical laboratory values, and are not guaranteed for all samples.
** Note: Normal practice is to size expansion tanks so that they are
1/4 to 1/3 full when the system is cold, and 2/3 to 3/4 full when the system is at the maximum normal operating temperature.
Paratherm Heat Transfer Fluids
Critical Temperature, Tc(Calculated) |
Units |
HR™ |
NF© |
HE© |
OR© |
MR™ |
LR™ |
CR™ |
ºR |
1465 |
1453 |
1580 |
1524 |
1358 |
1174 |
1168 |
|
ºF |
1005 |
993 |
1120 |
1064 |
899 |
714 |
709 |
|
K |
814 |
807 |
878 |
847 |
755 |
652 |
649 |
Critical Pressure, Pc(Calculated) |
Units |
HR™ |
NF© |
HE© |
OR© |
MR™ |
LR™ |
CR™ |
ATM |
18.7 |
11.1 |
26.5 |
13.3 |
12.9 |
10.7 |
28.6 |
|
PSIA |
274 |
163 |
389 |
196 |
190 |
157 |
421 |
Critical Volume, Vc(Calculated) |
Units |
HR™ |
NF© |
HE© |
OR© |
MR™ |
LR™ |
CR™ |
cm3/g-mole |
816 |
1579 |
720 |
1380 |
987 |
1327 |
493 |
|
ft3/lb |
0.037 |
0.072 |
0.033 |
0.063 |
0.045 |
0.06 |
0.023 |
Heat of Vaporization,DH vap |
Units |
HR™ |
NF© |
HE© |
OR© |
MR™ |
LR™ |
CR™ |
BTU/lb |
110 |
91 |
77 |
93 |
115 |
113 |
148 |
Molecular Weight avg |
Units |
HR™ |
NF© |
HE© |
OR© |
MR™ |
LR™ |
CR™ |
MW |
239 |
350 |
445 |
360 |
230 |
160 |
133 |
Constants |
k=Cp/Cv = |
1.01 |
C’ = |
316.5 |
|
R = |
82.06 cm3*atm/mol*K |
|
Fb = |
1.0 |
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