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gas-fired boiler

ClearSign Commercial Burner Retrofit Cuts NOx Emissions up to 90%

ClearSign Combustion says it has successfully demonstrated an 80 percent to 90 percent reduction in NOx emissions by retrofitting a conventional off-the-shelf commercial burner in a system designed to closely resemble a standard commercial firetube boiler. CEO Rick Rutkowski says the system demonstrates that ClearSign’s Duplex technology may be adapted … Read more »

ClearSign Burner Technology Sets NOx Abatement Record

ClearSign Burner Technology Sets NOx Abatement Record

Air pollution control technology company ClearSign Combustion says it has measured and documented a further 40 percent reduction in emissions of nitrous oxides (NOx), now down to 3 parts per million (PPM) from its previous record of 5 PPM announced just last month. This most recent demonstration was performed using … Read more »