Power generation at a stationary engine application


Courtesy of Courtesy of ElectraTherm

South Texas, USA
Max Gross Power Output: 28kWe
Thermal Heat Input: 235 - 450kWt
Hot Water Input Range: 180 - 190°F
Hot Water Flow: 200 GPM
Direct Condenser: Ambient air temperature ranges from 30-100°F avg is 70°F

ElectraTherm’s Gulf Coast distributor, Gulf Coast Green Energy (GCGE), is generating fuel-free, emission free power using the ElectraTherm heat-to-power “Green Machine” to efficiently capture excess heat generated by the cooling of a natural gas compressor stationary engine. The machine has logged more than 4,000 hours of power generation to date.

ElectraTherm’s Green Machine generates clean power by harnessing excess heat from stationary engines that would otherwise go to waste. Natural gas must be compressed at regular intervals to keep it flowing through pipelines. Waste heat is created by the stationary engines that drive the natural gas compressor. The Green Machine captures the heat from the jacket water, converting it into electricity.

GCGE teamed with a natural gas compression services company and a South Texas natural gas field to show that the ElectraTherm machine could be used effectively on a gas compressor engine. This project marks the first commercial stationary engine application of the Green Machine, which captures surplus heat from a Waukesha 5794 and generates emission-free electricity that can be used for on-site power needs or supplied to the local electricity grid. The waste heat removed by the Green Machine is equivalent to increased engine cooling capacity, a significant benefit for compressor engines in the heat of summer.

“Natural gas compressor stations powered by stationary engines are located all over North America, and these waste heat streams can be captured to generate additional power and cool the engine at the same time,” GCGE President Loy Sneary said. “This is energy efficiency at its best, and we expect to see many more engine applications in the future.”

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