An organic Rankine cycle (ORC) system can be a cost-effective way to convert waste heat to electricity. The key is finding the best ratio of net power recovery to capital cost.
Many industrial processes discharge large quantities of energy in the form of waste heat contained in fluegases from furnaces, heaters, kilns, boilers, etc. A cost-effective method of recovering this waste heat is an organic Rankine cycle (ORC) system, which extracts energy from fluegas and converts it to electrical power. By producing surplus electricity that the site can either use or sell to the power grid, an ORC installed in a fluegas stream can often generate enough electricity to offset the operating costs and achieve a favorable return on capital investment.
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