Package type heat exchanger computer design method

A technology of shell and tube heat exchanger and computer design, which is applied in the field of shell and tube heat exchanger design and computer design of shell and tube heat exchanger, which can solve the problems of unsatisfactory design personnel, large amount of design calculation, slow calculation speed, etc. problem, to achieve the effect of easy debugging and maintenance, high degree of visualization, and clear hierarchy

Inactive Publication Date: 2005-03-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, when encountering complex iterative calculations, the calculation speed is slow. For example, in the process of determining the effective tube length and the total heat tran

Method used

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Embodiment Construction

[0022] The computer design method of the shell and tube heat exchanger of the present invention will be further described below in combination with the design parameters required under the standard refrigeration working conditions.

[0023] The designed standard operating parameters are: cooling capacity: 111630W, evaporation temperature: 40°C, condensation temperature: 10°C, subcooling temperature: 15°C, suction temperature: 35°C, cooling water inlet temperature of the heat exchanger: 30°C , the refrigerant is R22.

[0024] The type of shell-and-tube heat exchanger required by the design is a flooded shell-and-tube evaporator, the type of heat exchange tube is a low-threaded tube, and the structural parameters of the heat exchange tube are, the diameter of the base pipe d b : 15.9mm, fin top diameter d t : 18.9mm, inner diameter of copper tube d i : 14mm, fin spacing s f : 1.104mm, wing top width δ T : 0.25mm, fin angle θ: 20°.

[0025] The specific design steps are as f...

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Abstract

The present invention is the computer-aided design method of shell-and-tube heat exchanger, and belongs to the field of cooling and air conditioning technology and computer-aided design technology. The computer-aided design process includes first establishing water pump data base; subsequent establishing of physical property parameter calculation module, heat exchanger design calculation module and I/One module; compiling the codes of the modules in C++ language; designing the interfaces of the modules and establishing DLL file calling interface program with VB language; inputting the required work state parameters and structural parameters into input module; calling DLL file for iterative calculation; and outputting the calculation result to the output module and automatically drawing. The present invention combines VB language for compiling simple interface and C++ language for high speed and high precision operation, and has low cost and high design efficiency.

Description

technical field [0001] The invention relates to a design method for a shell-and-tube heat exchanger, in particular to a computer-based design method for a shell-and-tube heat exchanger, which belongs to the technical fields of refrigeration and air-conditioning technology and computer-aided design. Background technique [0002] Shell and tube heat exchangers have a long history of use, and designers have accumulated rich design experience. Its design method has formed standardized steps. The design process generally includes the following steps: [0003] 1) Structural design. According to the type of shell-and-tube heat exchanger, the type of heat exchange tube and the structural parameters of the heat exchange tube given by the user: the diameter of the base tube of the heat exchange tube d b , Wing top diameter d t , inner diameter of copper tube d i , fin spacing s f , Wing top width δ T , fin angle θ, calculate the heat transfer area and other structural parameter...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 谷波奚东敏
Owner SHANGHAI JIAO TONG UNIV
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