Industrial Heat transfer Fluids

Thermal heat transfer system oil

Heat transfer fluid, also known as thermal oil or heat transfer fluid, is a liquid specifically designed to absorb heat at one point in the system and release it at another, acting as a medium for transporting thermal energy in closed circuits. Unlike water, which boils at 100*C at atmospheric pressure, heat transfer fluids can operate at much higher temperatures, often exceeding 320*C, without the need for extreme pressures that would endanger the integrity of pipes and heat exchangers. This ability to operate at high temperature and low pressure is what makes them indispensable in high-end industrial applications.

Synthetic heat transfer fluid

Molylub WTO Syn thermal synthetic fluids, such as those based on esters or aromatic hydrocarbons, offer superior performance in terms of thermal stability and service life. These fluids can operate in a wider temperature range, often from -40 degrees Celsius to over 400*C, depending on the specific formulation. Their resistance to oxidation and thermal degradation makes them ideal for continuous processes and high thermal loads, where the formation of sludge or coke could clog circuits and reduce heat exchange efficiency.

Synthetic heat transfer fluids (HTFs) are engineered compounds designed for high-temperature stability, low-temperature pumpability, and long service life, typically used in demanding industrial processes at highest operation temperatures. They excel in closed-loop systems, providing superior thermal degradation resistance, low volatility, and minimal fouling compared to mineral oils.

PRODUCT	COMPOSITION	TEMPERATURES	APPLICATION	PDF
Molylub WTO Waermetraegeroel	Naph Oil ISO 6743-12 Family Q	From -10 to 340°C	Enclosed circulated heat transfer systems
Molylub WTO Syn 15	Synthetic / high-boiling aromatic hydrocarbons	From -5 to +350°C	Higher flash point closed heat transfer systems with forced circulation
Molylub Food WT 32	Synthetic PAO	up to 326°C	Food Industry non-pressurized, liquid phase, closed heat transfer systems, boiling cauldrons

Safety in handling heat transfer fluids is an absolute priority, especially in a country like EU, where legislation on industrial safety and the environment is rigorous. Flammable fluids pose a fire risk if exposed to temperatures above their flash point. Therefore, it is essential to select fluids with flash points appropriate for the specific application and ensure that safety systems, such as relief valves and leak detectors, are correctly installed and calibrated.

Molylub WTO Syn series heat transfer oil

Molylub WTO Syn synthetic heat transfer oils can be used in the pharmaceutical industry, rubber manufacturing industry, chemical industry, textile industry, food industry, plastics manufacturing industry, dryers, and asphalt bases. Moreover, these high-quality oils are suitable for open heating systems used in laboratories, where low volatility is needed for safer operations.

Molylub WTO Syn® fluid has for years been successfully used in a broad variety of demanding applications in the processing of chemicals, food, pharmaceuticals, oils, adhesives and petroleum. It provides precise, uniform temperature control in process applications including die casting, injection moulding, curing, laminating, calendaring, drying, and printing.

Molylub Food WT heat transfer fluid for Food Industry boilers

Food-grade heat transfer fluids (HTFs) are specialized, non-toxic, and often NSF HT-1 certified oils used for indirect heating and cooling where incidental food contact is possible. Key applications include food/beverage processing (cooking, sterilization, frying), pharmaceutical manufacturing, and packaging, ensuring safety, efficiency, and odour-free operation. Food and beverage processing requires heat transfer fluids that meet strict safety and regulatory standards while delivering reliable thermal performance. From cooking and frying to pasteurization and packaging, your operations need NSF HT1 registered fluids that are safe for incidental food contact and free from toxic additives.

Our Molylub Food WT thermal fluids are rigorously tested to ensure they meet or exceed industry standards for thermal conductivity, specific heat, and viscosity. This means our fluids not only transfer heat efficiently but also maintain their properties over extended periods, even under demanding conditions. We understand that the performance of your thermal fluid system is critical to your operations. That’s why we offer more than just high-quality products—we provide unparalleled technical support and expertise.

Closed-loop heat transfer system oil

Closed-circle (or closed-loop) heat transfer fluid (HTF) systems are engineered, recirculating circuits used to transport thermal energy from a heat source to a heat user (reactor, mold, heat exchanger) without evaporating or exposing the fluid to the atmosphere. These systems are essential for precise temperature control (up to 300°C+ or down to -60°C) across various industrial applications, ensuring safety, efficiency, and reduced environmental impact.

Molylub WT heat transfer fluid (HTF) is needed to move heat for the focal point of collectors to the point of use. The relatively low operating temperature of process heat applications sometimes allows for the use of pressurized water as the HTF. This is attractive because of its good heat transfer parameters and cost-effective system components. Direct steam generation is an interesting option, because it offers the potential for highly efficient heat transfer and relatively lean system integration with conventional steam networks.

When high pressures are prohibitive for whatever reason, Molylub WT oil can be used as the HTF. Compared to CSP applications, the temperature limits of synthetic oil usually are of no concern. What can be more problematic is the environmental safety issue that no oil must mix with drain water, etc., in case of spillage. An improvement is the recent development of Silicon oils which are less contaminating. Safety measures can add substantially to the system costs especially for rooftop installations. In principle, air is also an interesting HTF for process heat systems but has not been pursued widely yet