Adopts a self-developed and produced high-strength, highly hydrophilic, nano scale microporous hollow fiber membrane, which can transport water vapor in liquid state. The water is absorbed by the hollow fiber membrane wall and transmitted to the gas in the form of steam. The transmission process is driven by the pressure difference between the water and gas on both sides of the pipe wall, which has excellent water and gas transmission efficiency, water heat balance, pressure resistance, and moisture resistance, which can save costs by more than 50% and increase its service life by twice.