 
|
 |
 |
Waste heat (100°C - 400°C) |
|
|
A waste heat binary plant is quite similar to a geothermal binary plant, hence the thermal energy is coming from an unexploited heat source (100°C—400°C typically) for example a thermal oil loop in an industrial plant, steel factory, cement factory, glass manufacturer etc. Thanks to a closed loop binary cycle, the selected fluid mixture is expanded inside the Cryostar turbine to produce 1 to 12 MW of clean electricity.
In order to estimate potential electricity recovery the following rule of thumb can be applied: |
|
Potential sources:
Biomass Boilers
Biogas Engines
Residual Heat from Industries
Solar Heat
Fuel Exhaust Heat
|
|
|
 In a typical Organic Ranking Cycle (ORC) heat recovery system, the exhaust gas enters the evaporator where heat is transferred to the ORC working fluid in a shell & tube heat exchanger or through an intermediate loop with thermal oil. The working fluid leaves the evaporator as superheated vapor and enters the expander which starts rotating. Electricity is then produced by the expander’s shaft coupled to a generator. When the fluid leaves the expander, its waste heat is recovered in the regenerator by preheating the incoming liquid.
The ORC working fluid then enters the condenser. The resulting saturated liquid is pumped back and preheated in the recuperator before entering the evaporator again. |
|
Cryostar Group
