Description: Calculation-graphic method is developed for determination practically accessible and expedient efficiently of cryogenics counterflow heat exchangers taking into account the second factors of heat transfer. The upshots received in two selected regions of predominating of thermal equivalent of heating and cooling streams are not symmetric to the axis of balance of heat supplies. It is discovered that lowering of the correlation size of thermal equivalent of streams sharply diminishes the expedient level of increase of heat number transfer units of real heat exchanges. The proposed upshots additionally allow specifying the number transfer unit (the coefficient of heat transfer) of effective heat-exchange vehicles.
Keywords: counterflow heat exchanger, second effect of heat transfer, correlation of thermal equivalents