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Komatsu's Environmental and Social Activities Enhancing Quality of Life


Mitigating Climate Change (Mitigating Climate Change through Products and Services)  Thermoelectric Power Generation

The thermoelectric power generation module is a device that utilizes the Seebeck effect, where two different metals are connected and temperature difference is applied at the point of contact, which creates an electrical current that flows between the metals. We are distributing this device through KELK Ltd. Through the heat-treating furnace afterburner's combustion heat at the Awazu plant, power is continuously generated and fed back into the power system. In addition, we are participating in NEDO's (New Energy and Industrial Technology Development Organization) "Research and Development of a Thermoelectric Power Generation Technology using Heat Exhaust from Steel-making Process" project, and have begun 10kW class power generation verification tests using radiant heat from JFE Steel's continuous-casting machine.

Thermoelectric power generation could reduce CO2 emissions by up to 1 million tons per year if plant heat exhaust recovery in Japan progresses, and grows to 50 percent.

Example of Verification Test in Heat-treating Furnace at Awazu Plant

Example of Verification Test in Heat-treating Furnace at Awazu Plant

Example of Verification Test with Continuous-casting Machine (Provided by JFE Steel)

Example of Verification Test with Continuous-casting Machine (Provided by JFE Steel)