STUDY OF HEAT EXCHANGE DURING DISCHARGE OF CRYOGENIC PRODUCTS INTO WATER

摘要

With the aim of clarifying conditions for dangerous discharge of cryogenic fuels into water in a test unit heat exchange in the area of the discharge pipe, evaporation and heating of vapors during their movement in water are studied. It is established that with continuous outflow of liquid nitrogen into water through fittings made of different materials in regimes that are possible in a real system the continuous shearing of ice due to the hydrodynamic thrust of the flow provides independence of the average flow rate on parameters of the emerging product, but it depends to a considerable degree on orientation of the flow. Calculated results are provided for emergence of liquid hydrogen during which with discharge from an industrial system into sea water there may be formation of an incendiary cloud.