Compressor Station’s Waste Heat Captured

Power generated through Organic Rankine Cycle


Published:

ElectraTherm has partnered with ConocoPhillips to capture waste heat from a compressor station at Cessford, Alberta, and generate 90kWe of electricity.

The company’s “Green Machine” generates power from low temperature waste heat using the Organic Rankine Cycle (ORC) and patented technology.

At Cessford, two Green Machine 4400s run in parallel off the waste heat of a Waukesha 7042 natural gas engine. The machines were installed in the first quarter and each has exceeded 2000 hours of run time. They are remotely monitored from ElectraTherm’s headquarters 1200 mi. (1930 km) away in Reno, Nevada.

Exhaust heat from the natural gas engine is converted to hot water and added to the jacket water heat through an engine glycol cooling loop combined with an Aprovis Energy Systems exhaust gas heat exchanger. The waste heat enters each Green Machine at 230°F (110°C) and 180 gpm (11 l/s), where it’s converted into usable onsite power. This specific site was retrofitted into an existing compressor using an engine driven radiator/gas cooling system.

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