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Conference paper

Comparison of two different modelling tools

In Proceedings of Sims 50, Modelling and Simulation of Energy Technology — 2009

By Brix, Wiebke1,2; Elmegaard, Brian1,2

From

Thermal Energy, Department of Mechanical Engineering, Technical University of Denmark1

Department of Mechanical Engineering, Technical University of Denmark2

In this paper a test case is solved using two different modelling tools, Engineering Equation Solver (EES) and WinDali, in order to compare the tools. The system of equations solved, is a static model of an evaporator used for refrigeration. The evaporator consists of two parallel channels, and it is investigated how a non-uniform airflow influences the refrigerant mass flow rate distribution and the total cooling capacity of the heat exchanger.

It is shown that the cooling capacity decreases significantly with increasing maldistribution of the airflow. Comparing the two simulation tools it is found that the solutions differ only slightly depending on which software is used for solving due to differences in the thermophysical property functions.

Considering the solution time,WinDali solves the equations more than 100 times faster than EES.

Language: English
Year: 2009
Proceedings: 50th International Conference of Scandinavian Simulation Society
Types: Conference paper
ORCIDs: Brix, Wiebke and Elmegaard, Brian

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