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Código para calcular las características de resistencia y termohidráulicas en intercambiadores de calor de alta carga

Resumen

Tipo:
Oferta Tecnológica
Referencia:
11 RU 86FG 3L57
Publicado:
24/06/2015
Caducidad:
04/01/2016
Resumen:
Un grupo de investigación ruso ha desarrollado un algoritmo y un código para calcular las características térmicas e hidráulicas de intercambiadores de calor de alta eficiencia térmica (>0,8). Los algoritmos originales permiten crear nuevas superficies para los intercambiadores basadas en las existentes, por ejemplo, superficies con espacio variable entre aletas. La tecnología se aplica actualmente en modelado de procesos de motores de combustión para desarrollar programas y métodos de optimización estructural y paramétrica. Se buscan socios interesados en continuar con el desarrollo y establecer acuerdos de licencia y comercialización.

Details

Tittle:
A code for calculating thermohydraulic and strength characteristics of high-loaded heat exchangers.
Summary:
A group of researches from Naberezhnye Chelny, Russia, developed an algorithm and a code for calculating thermal and hydraulic characteristics of heat-exchangers of high thermal efficiency (>0,8). Original algorithms allow creating new heat exchange surfaces on the basis of existing ones, e.g., heat exchange surfaces with variable fin spacing.
The researchers are looking for license agreement and/or joint further development
Description:
A group of researches from Russia offers a program for design and test calculations of thermal hydraulic characteristics of heat exchangers.
The code's kernel is written in the programming language "Fortran", which makes possible to use it as a preprocessor for numerical analysis of heat exchanger's hydrodynamics and strength in the CAE business packages widely used as a tool of engineering numerical analysis.
The essence of the method is as follows:
- the calculated area is divided into separate "typical" volumes;
- each typical volume is divided into "elementary" volumes with the pitch of dx ;
- pitch dx is selected under the condition of the possibility of determining the average (integrated) temperature difference of the heat exchange surface of the "elementary" volume as the arithmetic mean, i.e., ?? avr = (?? max + ?? min)/2, where ?? max and ?? min - are maximum and minimum temperature differences between the cooled (charge air) heat carrier and the cooling (atmospheric air) heat carrier within the "elementary" volume;
- There are two blocks in the range of thermal hydraulic calculation: external block for determination of thermal characteristics, and internal block for hydraulic characteristics. The calculation starts with setting the value for charge air cooling degree (??i) on the area i-(i+1); specification of ??i value is based on the heat balance with the accuracy of the allowable error.
Thus, unlike the analogs that use mainly "alternative search" method, the offered program provides the structural and parametric optimization of heat exchangers basing upon the heat conduction inverse solution for each case individually.
Currently, algorithm and program for charge air cooler are developed.
The researchers look for a partner for license agreement. The possibility for further joint development of technology and its commercialization is considered as well.

Current and Potential Domain of Application: Currently, the offered technology is applied in modeling of combustion engine processes in the heat exchangers (charge air cooler, cooling systems radiators) in order to develop program and method of structural and parametric optimization. Potential areas of application are: high-efficiency and thermal-loaded systems for cooling of the industrial heat exchange and power devices.
Advantages and Innovations:

The developed method of thermalhydraulic calculation, realised in the program, makes possible to calculate the thermal and hydraulic characteristics of reagents considering their mutual influence. This method allows avoiding the calculation of the reagent thermal-physical properties from the arithmetical mean temperature or logarithmical mean temperature, which induces errors in the calculation results.
Stage of Development:
Under development/lab tested
IPs:
Secret know-how

Partner sought

Type and Role of Partner Sought:
- Type of partner sought:R&D, industry
- Specific area of activity of the partner:design, engineering, operation of heat exchange devices, energy machines and equipment.
- Task to be performed by the partner sought:Licensing agreements, the possibility of joint production of heat exchanger's prototypes and its testing

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
No

Keywords

Technology Keywords:
04002006 Intercambiadores de calor