A fast modelling tool for plate heat exchangers based on depth-averaged equations.
Author(s) : LYYTIKÄINEN M., HÄMÄLÄINEN T., HÄMÄLÄINEN J.
Type of article: Article
Summary
In this study, the depth-averaged flow and energy equations for plate heat exchangers are presented. The equations are derived by integrating the original 3D flow and energy equations over the height of the gap between the bottom and top plates. This approach reduces the equations from 3D to 2D but still takes into account the frictions on the surfaces and heat transfer through the plates. The depth-averaging reduces the elapsed time of CFD simulations from hours to minutes. Thus, it is very practicable modelling method in real time design work. 2D CFD simulations with depth-averaged equations are compared with full 3D models for five different corrugation angles and corrugation lengths. The simulation results show that the 2D model predicts with relatively good accuracy the profile of the pressure drop and the temperature change as a function of the corrugation angle and the function of the corrugation length. In order to get more extensive information about the significance of the different geometry parameters on the efficiency of the heat exchanger, the authors simulated 30 different geometries with the fast 2D model. The results suggest that the temperature change is not as sensitive for the geometrical modifications as the pressure drop. [Reprinted with permission from Elsevier. Copyright, 2008].
Details
- Original title: A fast modelling tool for plate heat exchangers based on depth-averaged equations.
- Record ID : 2009-1088
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 52 - n. 5-6
- Publication date: 2009/01
Links
See other articles in this issue (10)
See the source
-
A theoretical approach to the evaluation of vis...
- Author(s) : DOVIC D., PALM B., SVAIC S.
- Date : 2002/08/26
- Languages : English
- Formats : PDF
View record
-
An improved moving boundary heat exchanger mode...
- Author(s) : QIAO H., AUTE V., RADERMACHER R.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record
-
A new generation of ammonia unit coolers.
- Author(s) : FILIPPINI S., MERLO U.
- Date : 2009/05/07
- Languages : English
- Source: 3th Conference on Ammonia Refrigeration Technology. Proceedings: Ohrid, North Macedonia, May 7-9, 2009.
- Formats : PDF
View record
-
Nueva generación de refrigeradores de unidades ...
- Author(s) : FILIPPINI S., MERLO U.
- Date : 2010/06
- Languages : Spanish
- Source: IIF-IIR/Frío Calor Aire acond. - vol. 38 - n. 426
- Formats : PDF
View record
-
Single-phase flow distribution in plate heat ex...
- Author(s) : LI W., HRNJAK P.
- Date : 2021/06
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 126
- Formats : PDF
View record