A double drum design increases the steam-water separation efficiency and provides a larger water capacity, which stabilizes the boiler's operation during load fluctuations.

The spiral geometry increases the heat transfer surface area and creates turbulence in the water flow, which speeds up heating and increases the overall steam generation rate.

Yes, the chain grate system is specifically engineered to handle a variety of solid fuels, including different grades of coal and various types of biomass pellets or chips.

Reduction is achieved through a rationally designed furnace arch that optimizes the air-fuel mix and a high-sealing wind box that minimizes air excess coefficients.

By arranging the ascending calandria under the drum, the boiler ensures better cooling of the high-temperature regions at the bottom, effectively eliminating the bulge phenomenon.

Maintenance primarily involves periodic lubrication of the chain drive and checking the grate bars for wear, which is simplified by the boiler's accessible design.