We suggest a water pump that actively transports water molecules by nanochannels. Spatially uneven noise fluctuations imposed on the channel radius trigger unidirectional water circulation with out osmotic stress, which might be attributed to hysteresis within the cyclic transition between the wetting/drying states. We present that the water transport depends upon fluctuations, akin to white, Brownian, and pink noises. Due to the high-frequency parts in white noise, quick switching of open and closed states inhibits channel wetting. Conversely, pink and Brownian noises generate high-pass filtered web circulation. Brownian fluctuation results in a quicker water transport price, whereas pink noise has the next functionality to beat stress variations in the wrong way. A trade-off relationship exists between the resonant frequency of the fluctuation and the circulation amplification. The proposed pump might be thought of as an analogy for the reversed Carnot cycle, which is the higher restrict of the vitality conversion effectivity.
