Burner for Hydrogen-Rich Fuel-Air Premix Having Enhanced Thermo-Acoustic Stability

A muffler-burner has a first and second plate each having multiple holes; the first plate mounted at a distance across a muffler area at a mounting distance less than or equal to one and a half millimeters and most holes of the first plate not aligned with the holes of the second plate. In embodiments, the mounting distance is no more than twice the Stokes boundary layer thickness at a first predetermined frequency and more than half of the Stokes's boundary layer thickness at a second predetermined frequency from 50Hz to 8KHz. A method of burning a fuel gas mixture includes mixing the fuel gas mixture with air and passing the fuel-gas-air mixture through holes of a first plate of a muffler-burner deck into a gap; passing the fuel-gas-air mixture from the gap through holes of a second plate into a combustion space; and igniting the fuel-gas-air mixture.