Organic Rankine Cycle (ORC) Waste Heat to Energy Recovery
Pratt & Whitney
United States
Los Angeles, CA
Organic Rankine Cycle (ORC) Waste Heat to Energy Recovery
Pratt & Whitney
Commercial Product Launch/ Market Ready/ Sales

Organic Rankine Cycle (ORC) units can produce electricity by recovering heat from industrial processes, reciprocating engines, and gas turbines. The electric power range in heat recovery applications is generally from 1 MW to 10 MW. They are commercially available today at a variety of sizes.

Capable of utilizing a wide range of temperatures, an ORC power plant produces reliable electricity from a variety of heat sources. The electricity is often available 24/7 and without the need for additional fuel expense.

Thermodynamic Principle behind the Organic Rankine Cycle

ORC technology is similar to a traditional steam turbine, but with a single, important difference. Instead of using water vapor, the ORC system vaporizes a high-molecular-mass organic fluid, resulting in excellent electric performance and several key advantages: slower turbine rotation, lower pressure, and no erosion of metallic parts and blades. The ORC unit is preassembled onto one or more skids and can be easily transported.

The ORC turbogenerator uses medium-to-high-temperature thermal oil to preheat and vaporize a suitable organic working fluid in the evaporator. The organic fluid vapor rotates the turbine, which isdirectly coupled to the electric generator, resulting in clean, reliable electric power.

The exhaust vapor flows through the regenerator, where it heats the organic liquid and is then condensed in the condenser and cooled by the cooling circuit. The organic working fluid is then pumped into the regenerator and evaporator, thus completing the closed-cycle operation.

Heat recovery from facilities in the following markets - Cement, Glass, Oil & Gas, Chemicals, Steel/Nonferrous, Paper & Pulp, Food, Waste Treatment, Thermal Oxidizers, Power Generation


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