The problems are examined of the effective functioning of the jet device as the main element of the heat pump allowing the recuperation of the low potential thermal energy. Regularities of the ejection, which are the basis for designing of the ejector and ejection apparatus, are described. It is shown that the effective ejection can be reached at developed regime of outflow of the liquid from the nozzle (Re>105). The common expression describing the coefficient of ejection for cases with cylindrical and flat nozzle on jet devices of various scales is presented. It is determined that flat nozzles can develop bigger values of Ke at the other equal conditions. The requirement for designing main elements of the ejector, which have to be followed for achievment of high values of coefficients of ejection, are formulated.
Russian Journal of Applied Chemistry – Springer Journals
Published: Apr 16, 2012
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