SOFTWARE DEVELOPMENT FOR COOLING LOAD CALCULATOR WITH MATLAB
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- Having conditioned air is a non-questionable comfort issue for both commercial and residential buildings. This is the main reason for air conditioning unit’s existence around the world. The air conditioners also must have the capacity to overcome thermal discomfort experienced by their users. To do so there should be designed and selected by considering the resistance loads especially cooling loads for cooling purpose. Therefore, cooling loads or heat gains calculation is the main task to specify the required air conditioning unit for the conditioned space. The main intension of this paper is to develop the cooling load calculator software by MATLAB app designer based on the thermal concepts and principles of air conditioning. Cooling load calculator is very helpful digital device throughout Ethiopia. Since almost all areas of Ethiopia need cooling, most air conditioning design in Ethiopia are designed for cooling. But this project is highly concentrated for a place where having hot seasons throughout the year especially for Arba Minch. While doing this paper first the developing software environment MATLAB app was installed on the available computer window. Then required air conditioning based information’s are gathered from handbooks, worldwide webs and Ethiopian national metrology agencies. Most of the required parameters are a constant tabular value available only ASHREA handbooks. Also, the conditioned space construction materials constant property tables are gathered from their respective reference books. Calculating the cooling load is highly dependent on geographical orientation of the building, types of applications to which the building is used for, number of population, the floor to which the room is located and the material to which the building is made. So, these parameters are also introduced on the paper. After all the software was developed with MATLAB app designer and compiled as a window standalone application. The paper also covers the sample testing of the software for a conditioned room in Arba Minch University. KEYWORDS: Air Conditioner, ASHRAE, Cooling Loads, MATLAB, Thermal Comfort, Software
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