Therminol LT Product Brochure

Eastman, 2020. — 8 p.Therminol LT fluid is designed for use in nonpressurized/lowpressure indirect heating systems. While Therminol LT has a relatively high normal boiling point (181°C/358°F), the recommended bulk (315°C/600°F) and maximum film (345°C/650°F) temperatures are greater. Therefore, proper care should be taken in the design of the system to minimize leakage, especially when operating above a bulk fluid temperature of 315°C (600°F). The recommended bulk and maximum film temperatures for Therminol LT are based on industry-standard thermal studies. Operation at or below these temperature maximums can provide long service life under most operating conditions. Actual fluid life is dependent on the total system design and operation and can vary by heat transfer fluid chemistry. As fluid ages, the formation of low- and high-boiling compounds may result. Low-boiling compounds should be vented from the system as necessary to a safe location away from personnel and sources of ignition and in compliance with applicable regulations and laws. The high-boiling compounds can be very soluble in the fluid. Significant overheating or fluid contamination will accelerate decomposition and may result in increased high-boiler and solids concentrations. Excess solids can typically be filtered for removal. Eastman recommends that systems using Therminol LT fluid be blanketed with an atmosphere of inert gas to protect against the effects of fluid oxidation on its performance and life expectancy. Pressure relief device(s) should be installed where required. Therminol LT is noncorrosive to metals commonly used in the construction of heat transfer systems. While Therminol LT has a relatively high flash point, it is not classified as a fire-resistant heat transfer fluid. Consequently, the use of protective devices may be required to minimize fire risk, and users of Therminol LT should check with their safety and risk management experts for specific instructions.