2017年换热器外文翻译--板式换热器设计的CAE方法

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1、3500 英文单词， 18500 英文字符 ， 中文 5700 字 文献出处： Dvok V, Vt T. CAE methods for plate heat exchanger designJ. Energy Procedia, 2017, 134: 234-243. CAE methods for plate heat exchanger design Vclav Dvok, Tom Vt Abstract The heat recovery can substantially reduce energy consumption needful for heating or air co

2、nditioning of buildings. The aim of work is to develop a simple CAE method for rapid design and optimization of the dimensions of plate heat exchangers for heat recovery. Flow and heat transfer in an air-to-air recuperative counter-flow plate heat exchangers were investigated numerically. Pressure d

3、rop and effectiveness were evaluated as functions of inlet velocity for three sizes of real heat exchangers. Obtained data were analyzed, inlet/outlet cross-flow and middle counter-flow parts were investigated independently and data were substituted by suggested functions for Nusselt number and loss

4、 coefficients. These functions were used to illustrate the effect of heat exchanger dimensions. It proved that bigger heat exchangers provide higher effectiveness and lower pressure drop for the same flow rate, but also the heat transfer surface is larger. Derived equations which also take the effec

5、t of material thickness and plate pitch into account represent a useful tool for design and optimization of recuperative heat exchangers for use in HVAC systems. Keywords: Heat exchanger, CFD 1. Introduction Energy efficiency of buildings is, among other things, associated with the intense insulatio

6、n of walls, floors and roofs, i.e. the building envelope. Together with the growing insulation, a need arose to provide additional room ventilation and with controlled ventilation a heat recovery is needed. The heat recovery can substantially reduce energy consumption needful for heating during cold seasons or air conditioning during hot seasons. As Zen at al. stated in 1, there are many ways of heat recovery in ventilation. This article deals with those in which a counter-flow pla