Heat transfer fluids and thermal oils are used to carry thermal energy in process heating, metal working, and machine cooling applications. There are several types of products. Circulating coolants, chiller fluids, anti-freezes, and refrigerants are used to transfer heat or provide cooling within machinery, process equipment or combustion engines. Hot oils, heater oils, and other thermal fluids are used to provide or transfer heat to a region near machinery or process equipment. Typically, products such as refrigerants, hot oils, and anti-freezes provide indirect heating or cooling and do not come into contact with the machinery or equipment. By contrast, metal working fluids and quenchants contact the workpiece or component directly. Most heat transfer fluids and thermal oils are used in circulating process heaters, chillers or coolers between a heat source and heat sink. Primary refrigerants provide cooling via phase changes or a Rankine cycle that consists of evaporative cooling and heat transfer. Secondary refrigerants include both circulating coolants and anti-freezes.
Heat transfer fluids and thermal oils vary in terms of chemical composition. Synthetic products include ester and diester compounds, polyglycol and water-glycol fluids, and silicone-based greases and oils. They are formulated from alkaline organic and inorganic compounds and used in diluted form with concentrations ranging from 3% to 10%. Non-synthetic products consist of petroleum or mineral oils and may include water. Synthetic products are more expensive than non-synthetic fluids, but provide better fire resistance and cooling performance. The cost and heat transfer performance of semi-synthetic fluids falls between those of synthetic and soluble oil fluids. Chlorofluorocarbons (CFCs) are nonflammable chemicals that contain carbon, chlorine, and fluorine. Halogenated fluorocarbon (HFC), halogenated chlorofluorocarbon (HCFC), and perfluorocarbon (PFC) fluids are included in this group.
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Engineering Web: Heat Transfer Fluids and Thermal Oils
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Heat Transfer Fluids, Hot Oils, Thermal Fluid Paratherm Corporation manufactures heat transfer fluids, and supports their use with comprehensive fluid and system maintenance assistance. See Paratherm Corporation Information |
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Heat Transfer Fluids hEAT TRANSFER FLUIDS For non-pressurized closed-loop thermal systems. See Paratherm Corporation Information |
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Heat Transfer Fluids, Synthetic and Thermal Fluids and Hot... Heat Transfer Fluids Synthetic and Thermal Hot Oils See Radco Industries, Inc. Information |
Part Numbers for Heat Transfer Fluids and Thermal Oils
| Part # | Distributor | Manufacturer | Product Category | Description |
|---|---|---|---|---|
| Code 94080 | Shell Lubricants | Heat Transfer Fluids and Thermal Oils | Outstanding hot surface aluminum protection, easy coolant maintenance | |
| HD | Dow Chemical | Heat Transfer Fluids and Thermal Oils | Suitable for HVAC applications where propylene glycol is preferred | |
| Code 94074 | Shell Lubricants | Heat Transfer Fluids and Thermal Oils | Excellent heat transfer, high quality | |
| SIL 300 | Thermo Scientific, Temperature Control/NESLAB & HAAKE Products | Heat Transfer Fluids and Thermal Oils | For use as bath liquid for circulator baths, do not use with silicone tubes |
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