MultiTherm® offers the next generation of heat transfer fluid for open-loop heat transfer fluid systems.
MultiTherm OG-1® is a hydrocracked base oil combined with the latest proprietary oxidation inhibitor/stabilizer. MultiTherm OG-1® was designed to meet the rising and demanding requirements of liquid phase open-loop heat transfer fluid system applications.
The most common form of contamination is oxidation of the heat transfer fluid. Excessive oxidation can create solids and high viscosity compounds that impair system effectiveness. Oxidation and fluid boil-off are major problems when using organic heat transfer fluids in an open-loop systems. Oxidation produces organic acids, which can polymerize and create deposits.
MultiTherm OG-1® is designed for use in liquid-phase heat transfer fluid systems, which are “open” to the atmosphere or there is a possibility that the heat transfer fluid in the expansion tank will come in contact with air. To reduce the oxidation process in an open-loop system, MultiTherm OG-1® is enhanced with special oxidation inhibitors to prevent this oxidative degradation and deposits.
MultiTherm OG-1® heat transfer fluid is designed for a maximum film temperature of 600°F / 316°C and a maximum system bulk temperature of 550°F / 290°C.
|MultiTherm OG-1 Physical Characteristics*|
|Chemical Type||White Mineral Oil|
|Appearance||Clear, Liquid, Colorless|
|Pour Point, ASTM D97||-44°F / -42°C|
|Density @ 60°F/16°C||
|Flash Point, COC, ASTM 92||455°F / 235°C|
|Fire Point, COC, ASTM 92||520°F / 271°C|
|Autoignition Point||675°F / 357°C|
|Atmospheric Boiling Point (10%) ASTM D1160||704°F / 373°C|
|Maximum Film Temperature||600°F / 316°C|
|Maximum Recommended Bulk Temperature||550°F / 290°C|
|Average Molecular Weight||394|
|Pumpability Temperature @ 2000cP||-4°F / -20°C|
|Heat of Vaporization @ 600°F / 316°C||420 BTU/lb
|Heat of Combustion||18,900 BTU/lb
|Coefficient of Thermal Expansion||0.00056/°F
*Typical Properties, not specifications
Low Vapor Pressure
MultiTherm OG-1® heat transfer fluid has a very low vapor pressure. This is important because fluid boil-off is an issue in open-loop systems. The rate of boil-off of a heat transfer fluid is dependent on the fluid vapor pressure. The higher the vapor pressure, the greater the rate of fluid boil-off.
High Flash Point
MultiTherm OG-1® offers the benefit of having a high flash point of 455°F / 235°C. It also offers the extra benefit of having a higher Fire Point then most other heat transfer fluids. MultiTherm OG-1® has a Fire Point of 520°F / 271°C. Benefits of MultiTherm OG-1®:
Warranty: MultiTherm® warrants that MultiTherm OG-1® conforms to the data set forth in this brochure. We present this information in good faith, but because we cannot control or anticipate the many different conditions under which our information and product may be used, no other warranty, expressed or implied, is given.