Modelling and simulation of HAM processes
نویسندگان
چکیده
The influence of the bioclimatic elements upon the building behavior is analyzed using Matlab/ Simulink and toolbox HAMBASE. However, this software does not take into account a crucial element characteristic of these bioclimatic buildings, the air density. We propose an enhancement of existing computer code by adding a model to calculate the air density characteristic along the already existing building simulation code. The validation of the new computational model consists in comparing the two models (with and without the air density equation) in standard test conditions recommended in ASHRAE Bestest 140/2001. Changes were obtained for the output parameters of this model (indoor resultant temperatures, heat losses) of up to 15%.
منابع مشابه
Advance Modelling and Simulation of Industrial Boilers
This paper presents some of the results of the simulation in the radiation section of an industrial boiler using an advanced mathematical model. Calculations are described for the flow, heat transfer, and chemical reaction processes occurring within a gas-fired cylindrical furnace. The calculation procedure is a two dimensional one in which the main hydrodynamic variables are the velocity and s...
متن کاملAPPLICATION OF HPM AND HAM TO THE FIRST FORM OF BLASIUS EQUATION
In this work, the Blasius equation is studied. Homotopy perturbation method (HPM) and homotopy analysis method (HAM) are applied to obtain its solution. Comparison with variational iteration method (VIM) is made to highlight the significant features of employed methods and their capability of handling nonlinear problems. The outcome shows the success of (HPM) and (HAM) for solving nonlinear pro...
متن کاملEngineering of Membrane Gas Separation Processes: State of The Art and Prospects
Membrane processes are today one of the key technologies for industrial gas separations and show growing interest for future use in sustainable production systems. Besides materials development, dedicated engineering methods are of major importance for the rigorous and most efficient design of membrane units and systems. Starting from approaches based on simplified hypotheses developed in the 5...
متن کاملCommon Exercises in Whole Building Ham Modelling
Subtask 1 of the IEA ECBCS Annex 41 (IEA 2007) project had the purpose to advance development in modelling of integral Heat, Air and Moisture (HAM) transfer processes that take place in “whole buildings”. Such modelling considers all relevant elements of buildings: The indoor air, building envelope, inside constructions, furnishing, systems and users. The building elements interact with each ot...
متن کاملRainfall-runoff modelling using artificial neural networks (ANNs): modelling and understanding
In recent years, artificial neural networks (ANNs) have become one of the most promising tools in order to model complex hydrological processes such as the rainfall-runoff process. In many studies, ANNs have demonstrated superior results compared to alternative methods. ANNs are able to map underlying relationship between input and output data without prior understanding of the process under in...
متن کامل