MicroPower and ArcelorMittal Dofasco have outlined a joint waste heat recovery project designed to integrate MicroPower's thermoelectric technology at the Dofasco steel production facility in Hamilton, Ontario. The partnership represents a strategic collaboration between a leading North American steelmaker and MicroPower to validate thermoelectric waste heat recovery technology at commercial scale in the Canadian steel industry.
The project outline focuses on cooling duct waste heat recovery at the Dofasco facility. Steel production generates enormous quantities of waste heat from rolling mills, cooling systems, and exhaust streams. Cooling ducts specifically discharge significant thermal energy that can be recovered and converted to electricity. The joint project identifies optimal locations for thermoelectric module integration and outlines a phased deployment strategy.
"ArcelorMittal Dofasco is a world-class steelmaker with sophisticated engineering capabilities and genuine commitment to operational efficiency and sustainability," said MicroPower leadership. "This partnership validates our technology at the scale that matters – major industrial operations where waste heat volumes justify investment in recovery systems. The cooling duct focus provides a clear, well-defined thermal application where our thermoelectric technology delivers superior performance."
The project outline details a phased approach. The initial phase involves comprehensive thermal characterization of Dofasco cooling ducts and identification of optimal integration points for thermoelectric modules. Engineering teams from both companies collaborate on system design, accounting for thermal profiles, flow rates, pressure drops, and facility constraints. The assessment generates detailed feasibility analysis and preliminary economic projections.
Subsequent phases outline pilot installation of MicroPower thermoelectric modules at selected cooling ducts, monitoring of thermal performance and power generation, and assessment of operational reliability over extended periods. The pilot demonstrates technology viability while generating performance data that informs larger-scale deployment decisions.
Cooling duct waste heat represents a well-characterized thermal opportunity for thermoelectric recovery. Steel mill cooling ducts operate at temperatures (150-250°C) and mass flows ideally suited to MicroPower's PowerBlock technology. The continuous, stable nature of cooling duct operation minimizes thermal cycling and operational variability – favorable conditions for thermoelectric system performance and longevity.
The economic opportunity is significant. A typical steel mill cooling system recovers 2-5 MW of thermal energy continuously. Even modest conversion efficiency translates to substantial electricity generation. At industrial electricity prices of $60-100 per MWh, a 500 kW thermoelectric recovery system generates $260,000-435,000 annually. This economic case justifies investment in pilot projects and full-scale deployment.
ArcelorMittal Dofasco's motivation extends beyond immediate economics. The global steel industry faces mounting pressure to reduce energy intensity and carbon footprint. Regulatory frameworks increasingly impose carbon costs. Customer sustainability requirements create competitive pressures. Thermoelectric waste heat recovery directly addresses these challenges by improving facility efficiency while reducing emissions.
The partnership follows on MicroPower's successful completion of its initial Gerdau steel facility pilot in July 2021, where deployment began at a Canadian facility with two installation locations representing different temperature profiles. The Gerdau experience informed MicroPower's engagement approach with other major steelmakers.
MicroPower and ArcelorMittal Dofasco expect to complete the initial thermal assessment and feasibility analysis in late 2021, with pilot deployment timelines to be determined following project evaluation.