Then come the supercritical boilers with 570 degrees, 250 bars and 38-42 per cent efficiency. Supercritical boilers are the norm in the industry today. Ultra supercritical boilers (620 degrees, 275 bars, 42-46 per cent) are just around the corner. But the most efficient boilers are the AUSCs, of 710 degrees, 320 bars, with more than 50 per cent efficiency. The researchers also tested another alloy, Alloy 740, which showed better mechanical strength, but oxidised earlier.

Source: The Hindu December 25, 2023 16:52 UTC