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Method for calculating sensitivity of cooling system parameters and method for identifying parameters once again in quantitative way

A heat dissipation system and heat dissipation coefficient technology, applied in the direction of heat exchanger types, indirect heat exchangers, fixed conduit components, etc., can solve problems such as the inability to quantify the degree of influence of the heat dissipation system, lack of theoretical basis for the heat dissipation system, etc., and achieve simplified design The effect of the calculation process

Inactive Publication Date: 2009-09-23
TONGJI UNIV
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Problems solved by technology

Many manufacturers of port machinery and construction machinery lack theoretical basis when designing cooling systems. They are very troubled by how big the prime mover needs to be, how big the radiator is, and how to configure the structural parameters of the radiator. At present, only qualitative and rough descriptions are available. problem, it is impossible to quantify the influence of each parameter on the cooling system

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  • Method for calculating sensitivity of cooling system parameters and method for identifying parameters once again in quantitative way
  • Method for calculating sensitivity of cooling system parameters and method for identifying parameters once again in quantitative way
  • Method for calculating sensitivity of cooling system parameters and method for identifying parameters once again in quantitative way

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0019] The basic content of the present invention is to strike a balance between precise and complex theory and qualitative description, take quantitative coefficients for the influence of each parameter on heat dissipation performance, call it the sensitivity of each parameter, use it as an approximate Linear design basis, instead of complex nonlinear solutions.

[0020] For illustrating the application process of this method, here take the tube-fin radiator commonly used in engineering vehicles as an example, and the main method of the present invention is as follows:

[0021] The detailed structural size parameters of the tube-fin radiator are as follows: figure 1 shown, which includes the following parameters: the short diameter of the tube D T ;Tube length and diameter W T ;Spacing between tube columns S C ;Spacing between tube rows S ...

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Abstract

The invention relates to a method for calculating sensitivity of cooling system parameters and a method for identifying parameters once again in quantitative way; in the methods of the invention, according to thermal properties of a radiator and airduct properties, a mathematical model of deign parameters and heat dispersion of the radiator is established; the model comprises radiator parameters, cooling fluid parameters, air parameters and fan parameters; according to the relation between the parameters and the general thermal properties, multiple of a changed certain parameter corresponding to original value serves as an independent variable, the multiple of coefficient value of heat transfer changing along with the parameter corresponding to the original value of the coefficient value of heat transfer serves as an induced variable; influence of different parameter variation magnification on the magnification of the coefficient value of heat transfer is observed; the ratio of coefficient of heat transfer magnification corresponding to parameter variation magnification is defined as parameter sensitivity coefficient; variation of a certain parameter is determined according to the variation of the known parameter sensitivity coefficient and general thermal properties so as to accomplish the design of the heat removal system; the design of the invention, in case of the application of the heat removal system in the project, can facilitate parameter quantization, thus simplifying design calculation process.

Description

technical field [0001] The invention belongs to the field of port machinery and engineering machinery, and relates to a quantitative design of parameter sensitivity of a cooling system. Background technique [0002] In the field of port machinery and construction machinery, due to the high energy of heating and cooling of power components, the heat dissipation system is one of the indispensable systems of the whole machine. The radiator widely used at present is the tubular radiator, and its basic principle is to dissipate the energy in the cooling medium to the outside by forced convection heat exchange. [0003] Because the design of the heat dissipation system of the tube radiator involves many aspects such as heat transfer and fluid mechanics, and is based on a large number of empirical experimental research results, the mutual coupling and nonlinear relationship between the design parameters are very complicated. The design of engineering applications requires relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/02
Inventor 王安麟李晓田姜涛刘广军慈健董亚宁
Owner TONGJI UNIV
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