摘要：The heat exchanger is one of the main equipment in the field of petroleum, chemical industry, nuclear energy and other industrial applications. The development of an efficient heat exchanger can effectively improve the energy utilization rate, which is an important way to solve the energy and environmental problems. Shell and plate heat exchanger is a new type of heat exchanger; it combines the advantages of shell and tube heat exchanger and plate heat exchanger. It has high heat transfer efficiency, high temperature and pressure resistance, compact structure and light weight, and makes up for the uneven stress distribution of plate heat exchanger. At present, there are few literature reports on the flow pattern and pressure drop characteristics of gas-water two-phase flow in the shell and plate heat exchanger. In this paper, the flow pattern and pressure drop of the vertical upward gas-liquid two-phase flow in the shell and plate heat exchanger are experimentally studied. The macro distribution characteristics of the vertical upward gas-water two-phase flow interface in the shell and plate heat exchanger are obtained by high-speed camera technology. The flow pattern is divided into bubbly flow, slug flow, film flow and churn flow according to the morphological characteristics of the phase interface; at the same time, the relationship between flow pattern and pressure drop is analyzed, and it is found that the amplitude of pressure drop fluctuation in bubble flow is the smallest, followed by the slug flow and the film flow, and the amplitude of pressure drop fluctuation in the agitated flow is the largest; based on Lockhart-Martinelli theory, the prediction model of two-phase flow pressure drop in the shell and plate heat exchanger is established by analyzing the relationship between two-phase multiplier and Martinelli parameter, it is found that the value of Chisholm parameter C is close to the value of Chisholm's original laminar-laminar flow in smooth tube.
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ISSN号：0438-1157

卷、期、页：v 71,n 7,p3042-3049

发表日期：2020-07-01

收录情况：EI（工程索引）

发表期刊名称：Huagong Xuebao/CIESC Journal

通讯作者：吴鹏飞,赵珏

第一作者：王科

论文类型：期刊论文

论文概要：吴鹏飞,王科,赵珏，Flow pattern and pressure drop on shell side of shell and plate heat exchanger under adiabatic state，Huagong Xuebao/CIESC Journal，2020，v 71,n 7,p3042-3049

论文题目：Flow pattern and pressure drop on shell side of shell and plate heat exchanger under adiabatic state