Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

Xinpu Song,Jin Yu,Mengdi Chen,Feng Zhang,Dongsheng Xi,S Trukhanov,C.-W Chow

doi:10.1051/e3sconf/202126001019

Abstract

High efficiency heat exchanger is always a hot topic, and field synergy theory is introduced as an important means to optimize the heat transfer efficiency. Based on the field synergy theory, a new type of heat exchanger is proposed in this paper, in which, the cold and hot fluid presents reverse cross flow law. Through the verification of the test and numerical simulation results, a reasonable numerical simulation model and method are obtained. Then, the flow and heat transfer conditions of the new structure heat exchanger are simulated by the verified numerical simulation technology. The conclusion is as follows: K-ε turbulence model and coupled heat transfer model can be effectively used in the numerical simulation of heat exchanger. And the reverse cross convection heat exchanger can effectively improve the uniformity of water temperature distribution in the heat exchanger.

Highlights

The effective utilization of energy has always been accompanied by the development of human society
Based on the field synergy theory, this paper proposes a new type of plate heat exchanger, which is based on the plate heat exchanger, adding a Z-shaped baffle on the plate surface of the heat exchanger to separate the hot and cold fluid on both sides of the baffle plate
When CFD numerical simulation technology is used to analyze the flow and heat transfer characteristics inside the heat exchanger, the governing equations can be written as the following equation[5,6,7]:

Summary

Introduction

The effective utilization of energy has always been accompanied by the development of human society. The numerical simulation technology is used to study the fluid flow, temperature distribution and efficiency of the heat exchanger. 2.1 Physical models The structure of the new heat exchanger is shown in Fig.[1]. When CFD numerical simulation technology is used to analyze the flow and heat transfer characteristics inside the heat exchanger, the governing equations can be written as the following equation[5,6,7]:. In this equation, the above parameters can be found in reference[7]

Numerical simulation verification and analysis

Results and discussion

Conclusion