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ElectraTherm Waste Heat Generator
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How ElectraTherm's Waste Heat Generator Works
Imagine a tea kettle on a stove. When heat is applied to the bottom of the kettle, the water in it boils and emits pressurized vapor through the cap and creates a whistle. By holding a child's pinwheel in the flow of emitting water vapor, the pressure from the steam spins the pinwheel. With enough pressure, the spinning propeller, attached to a generator, could light a small bulb.
The concept of ElectraTherm's WHG is the same. We capture a heat source, which boils the working fluid, producing a gas. The gas expands in a one-way, closed piping system and its pressure turns the expander, which drives a generator and puts out electricity.
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The Working Process
ElectraTherm has employed the proven organic Rankine cycle in its Waste Heat Generator solution. The graphic below shows the working process for the ElectraTherm Waste Heat Generator, which uses a non-flammable, eco-friendly refrigerant selected for high performance at low temperature.
Surplus heat captured by the evaporator is used to "boil" the working fluid into a vapor. Under pressure, the vapor is forced through the screw expander, turning it to spin an electric generator. The vapor is cooled and condensed back into a liquid in the condenser. The working fluid liquid refrigerant is pumped to higher pressure and returned to the evaporator to repeat the process.
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