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Mechanism Modeling Calculation Method of Each Channel Gain of Heat Exchanger

A channel gain and calculation method technology, which is applied in calculation, instrumentation, electrical digital data processing, etc., can solve problems such as lack of solutions, and achieve the effect of strong guidance and strong practical value

Inactive Publication Date: 2019-04-09
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Mechanism Modeling Calculation Method of Each Channel Gain of Heat Exchanger
  • Mechanism Modeling Calculation Method of Each Channel Gain of Heat Exchanger
  • Mechanism Modeling Calculation Method of Each Channel Gain of Heat Exchanger

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Embodiment

[0052] The process of the heat exchanger is as figure 1 As shown, the cold and hot media flow through different channels of the heat exchanger respectively, and at the same time exchange heat through the heat exchange surface. The purpose of the heat exchanger process is to use the hot medium to heat the cold medium, or to use the cold medium to cool the hot medium. The characteristics of the considered heat exchanger are defined as follows:

[0053] (1) The cold and hot media of the heat exchanger are both single-phase, and no phase change occurs.

[0054] (2) The heat transfer mode between the cold and hot medium and the heat exchange surface is convective heat exchange.

[0055] Table 1 lists the main process channels of the heat exchanger. Starting from the process mechanism of the heat exchanger, the gains of these channels can be calculated according to the structural parameters and thermal parameters of the heat exchanger. figure 2 The calculation relationship diag...

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Abstract

The present invention relates to a calculation method for mechanism modeling of each channel gain of a heat exchanger. The method is used for mechanism modeling of a heat exchanger or used for determining a value range of each channel gain during system identification and modeling. According to the calculation method, based on a process mechanism of the heat exchanger, a gain of each channel is calculated according to a structure parameter and a thermal power parameter of the heat exchanger. Compared with the prior art, the method provided by the present invention has the advantages of simpleness and high efficiency and the like.

Description

technical field [0001] The invention relates to a heat exchanger modeling technology, in particular to a mechanism modeling calculation method for the gain of each channel of the heat exchanger. Background technique [0002] Heat exchanger is an important industrial equipment, which is widely used in chemical industry, petroleum, power, food and many other industrial productions. Its function is to heat the cold medium or cool the hot medium to the appropriate process parameters. In order to design the heat exchanger control system, it is necessary to establish a mathematical model of the heat exchanger, and the gain of each process channel is an important parameter of the mathematical model of the heat exchanger. [0003] The methods for establishing dynamic mathematical models of heat exchangers can generally be divided into two categories: mechanism modeling methods and system identification methods. The mechanism modeling method is to establish a mathematical model base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 康英伟归一数杨平陈欢乐李芹王松于会群王念龙徐春梅吴周晶余洁张经纬
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER