Eksperimental'noe issledovanie vakuumnogo teplonasosnogo distillyatora s mekhanicheskoy kompressiey para



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The increasing world demand for desalination and water treatment plants as well as a wide application of distillation technologies in different spheres of business activity imposed the development of this theme. One of the most perspective methods of water treatment and distillation is the method of evaporation using a mechanical vapor compression (MVC). Based on this method a circuit of a vacuum heat pump distiller on the basis of highspeed roots vacuum pump (RVP) operating under conditions of high depression at 30...40 °С water boiling temperatures was offered. The paper presents the results of the experimental study of a vacuum heat pump distiller that operates on the original test bench developed in the laboratory of the department “Low temperature engineering n. a. P.L. Kapitsa”. It was proved that the offered technical solution using a RVP as a major tool to increase the pressure and to mix vapors is operable. A mathematical model of the nonstationary heat exchange process of a singlestage distillation plant with mechanical vapor compression was verified. The dependence for calculation of a heat transfer coefficient when heating the mass of water in a free volume on vertical tubes under conditions of vacuumizing the steam space was offered. The data on efficiency and electric consumption of the plant developed were found. The question was raised regarding the necessity to continue the works in this field and to develop prototypes.

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参考

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