Organic Rankine cycle (ORC)

As precise temperature control, excellent thermal stability, and heat transfer coefficients are key for reliable operation, Eastman Therminol® heat transfer fluids are widely used for Organic Rankine cycle (ORC) system applications. ORC systems are widely used in the production of electricity from biomass combustion or safe recovery of thermal energy from exhaust gases from industrial processes such as cement, glass, or metal processing plants. This expanding “green” technology is helping to reduce the global energy footprint. ORC is a process designed to use high- or medium-temperature Therminol fluids with lower operating pressures and higher partial load efficiency than steam-driven conventional power plant turbines. ORC hybrid applications, such as combined concentrated solar power (CSP) and ORC, are also finding Therminol products to be excellent heat transfer media.

Heat transfer fluids for alternative energy and technologies (PDF)

Therminol 55 is a synthetic heat transfer fluid used in moderate temperature applications. Therminol 55 fluid is designed for use in non-pressurized /low-pressure, indirect heating systems. It delivers efficient, dependable, uniform process heat with no need for high pressures.

Therminol 59 is a synthetic heat transfer fluid with excellent low temperature pumping characteristics and thermal stability.

Therminol 62 is a synthetic heat transfer fluid whose chemistry is custom contoured for high-performance, high-purity, low-pressure and exceptional thermal stability.

Therminol 66 is the world’s most popular high temperature, liquid phase heat transfer fluid. Therminol 66 is pumpable at low temperatures, and offers high temperature thermal stability.

Therminol 68 is a high temperature liquid phase heat transfer fluid with excellent thermal stability. Therminol 68 was developed for use at temperatures up to 360° C (680°F) in liquid phase heat transfer fluid systems. Therminol 68 has a boiling point of 308°C (586°F), but static pressure of about 2 bar should maintain the liquid phase at high temperatures.

Therminol SP is a synthetic heat transfer fluid used in moderate temperature applications. Therminol SP fluid is designed for use in non-pressurized /low-pressure, indirect heating systems. It delivers efficient, dependable, uniform process heat with no need for high pressures.

Therminol VP-1 heat transfer fluid is an ultra-high temperature synthetic heat transfer fluid designed to meet the demanding requirements of vapor phase systems or liquid phase systems.