What is heat recovery. How does it work and what is it for

ORC is the acronym of the Organic Rankine Cycle (http://exergy-orc.com/technology/orc) , a system that allows the recovery of industrial heat, solar panels, and geothermal systems to produce electricity for various uses (such as lighting).

Nothing, or nearly, is wasted and this makes the ORC an efficient power generation system, primarily for industries.

The essential features of these systems are the low phase change temperature (lower than water) and the use high molecular weight organic substances. Characteristic mentioned above allows these systems to produce electricity even from low and medium heat sources such as solar panels, geothermal systems, and industrial waste.

Ultimately, an ORC system for power generation consists of a primary heat exchanger (which is used to transfer heat from exhausted gas to a heat carrier), alongside the Organic Rankine Cycle (which Produces electricity from the recovered heat), and a system for condensing heat dissipation.

The possibility of recovering heat from solar panels and geothermal systems also makes ORC very effective in the field of renewable energy, but industrial applications in Italy are still rare.

In Italy, ORC modules for power generation are mainly applied to the thermal recovery of engines and industrial processes, as well as to small or residential power plants, such as biogas or biomass plants.

Industrial sectors where the ORC system can be used more efficiently are metallurgical, building materials, glass and chemistry, all energy consuming sectors that can benefit, even economically, from the full use of a heat recovery system.

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