Research On Heat Transfer And Flow For Plate’s Configuration Of Plate Heat Exchange

Heat exchanger is a heat exchange machine, other word is a heat transfer device, different temperature of fluid in the internal flow, the fluid direct or indirect contact heat transfer.In modern industry, the plate heat exchanger is gradually replacing the shell and tube heat exchanger and other traditional heat exchanger, because the plate heat exchanger has high heat transfer coefficient, high temperature and strong bearing capacity, small occupied area, the advantages can realize heat mediums etc. This paper studies the heat exchanger is a chevron type plate heat exchanger, the plate heat exchanger is a measure of an important indicator, which is affected by many factors, but the internal flow design of size sheet related computing subject less, on passage structure plate can affect the characteristics of flow and heat transfer of fluid regularity is not perfect research in this area is increased, and the heat exchanger efficiency key.This article launches the research to this problem, including a total of three parts:Firstly, referring to the domestic and international research status, key points of Chevron type plate heat exchanger technology, through the derivation of numerical calculation of fluid dynamics simulation calculation formula, numerical algorithm to solve the problem;Secondly, complete the research on flow characteristics of plate heat exchanger fluid. Provide technical parameters for the manufacturers, a computational fluid dynamics analysis model, model simplification, to complete the analysis of computational fluid dynamics analysis, including heat, have decided to plate heat exchanger performance related numerical results;Once again, the internal flow characteristics of plate heat exchanger, contrast analysis of plate heat exchanger structure characteristics of three parameters namely the corrugation inclination angle, pitch corrugation height method and numerical optimization, the uniform experimental method, numerical optimal results, to improve the heat transfer performance of heat exchanger plate.Research results obtained by the comparison of domestic and foreign scholars, in the plate heat exchanger in many channel structure, heat transfer and flow characteristics of plate tectonics standard herringbone effect best, but based on the chevron type plate new product improvement with isosceles trapezoid channel, according to the present has been published thesis, focus on information, no scholars at the plate tectonics given the specific parameters of qualitative analysis.