Study on numerical simulation of spirality inserted piece for heat exchanger

Abstract

Heat exchanger is widely used in energy, power, chemical, metallurgy, machinery, transportation, aerospace and other fields. Heat exchanger with spirality inserted piece is a new type of energy-efficient developed on the basis of traditional shell and tube exchanger. In this paper, the numerical simulation method is used to prove that the spirality inserted piece heat exchanger tube has the characteristics of enhanced heat transfer. At the same time, the finite element model of the spirality inserted piece heat exchanger is used to simulation and analyze. And compared with the heat exchanger without this structure, the influence of size parameters of spirality inserted piece pitch on fluid motion and heat transfer in tube is obtained. Indicating the advantages and characteristics of heat transfer compared with traditional shell and tube exchanger. By comparing the different pitch of the heat exchanger pipe, get the relationship between spirality inserted piece pitch and heat transfer performance of pipe.