78results about How to "Reduce air supply" patented technology

A method of controlling an air compressor motor for a fuel cell vehicle is provided. The method includes calculating a counter electromotive force constant of the air compressor motor based on a voltage and a current of the air compressor motor for the fuel cell vehicle supplying air to a fuel cell stack and a rotation speed of the air compressor motor. The method additionally includes determiningwhether a permanent magnet of the air compressor motor is demagnetized based on a result of comparison between the calculated counter electromotive force constant value and a pre-set counter electromotive force constant design value.

The invention relates to a multi-pipe air inlet air mixing cabin which comprises a shell, an indoor air inlet pipe set, an outdoor air inlet pipe set and down draught preventing valve plates. An air mixing region and a mixed air outlet are formed in the shell, holes allowing indoor air inlet pipes and outdoor air inlet pipes to be inserted are formed in the shell, the indoor air inlet pipe set comprises the indoor air inlet pipes, the outdoor air inlet pipe set comprises the outdoor air inlet pipes, one end of each indoor air inlet pipe and one end of each outdoor air inlet pipe are arranged in the air mixing region, the other end of the corresponding indoor air inlet pipe and the other end of the corresponding outdoor air inlet pipe are arranged outside the shell, all the ends, in the air mixing region, of the indoor air inlet pipes and all the ends, in the air mixing region, of the outdoor air inlet pipes are provided with the down draught preventing valve plates, the down draught preventing valve plates are connected and fixed to the indoor air inlet pipes and the outdoor air inlet pipes through hinges, and the hinges are located in the centers of openings of the indoor air inlet pipes and the centers of openings of the outdoor air inlet pipes. Air inlet amount is disintegrated through multi-pipe air inlet, and control over air mixing proportions and air mixing temperature is facilitated; the problems of air leakage and down draught can be solved through the tiny air inlets and the down draught preventing valve plates.

The inventions discloses a later-period landfill leachate A / O (anoxic / oxic) half short-cut nitrification and UASB (upflow anaerobic sludge blanket) anaerobic ammonia oxidation combined nitrogen removal device and method, and belongs to the technical field of biological nitrogen removal of high ammonia-nitrogen landfill leachate with a low C / N (carbon / nitrogen) ratio. A raw water tank is communicated with a first grid chamber in an anoxic zone of an A / O half short-cut nitrification reactor, a central tube and an overflow dam are arranged in a settling pond, the settling pond is connected with the A / O half short-cut nitrification reactor, water discharged from the upper part of the settling pond is connected with a middle water tank through a water discharge pipe, the middle water tank is connected with the bottom of an anaerobic ammonia oxidation reactor, and the anaerobic ammonia oxidation reactor is provided with a self-circulation pipe and connected with an A / O raw water tank; the A / O half short-cut nitrification reactor is connected in series with an anaerobic ammonia oxidation UASB reactor for operation, and a later-period landfill leachate stock solution is diluted through circulation of water discharged from the anaerobic ammonia oxidation UASB reactor. The device and the method are used for organic matter removal and short-cut nitrification of later-period landfill leachate of a refuse landfill, the technology is advanced, the device is simple in structure, and the energy conservation and cost reduction advantages are remarkable.