Technical and Economical Assessment of a Net Zero Energy Commercial Building Connected to the Network in Ahvaz, Considering Reliability Constraint

Subject Areas : Renewable Energy

sayedmohammadamin mousavisadat ¹ , Hossein Mohammadnejad Shourakayi ^{2 *} , Soudabeh Soleimani ³

1 - M.Sc., Electrical Engineering, Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad university, Tehran, Iran
2 - Assistant Professor, Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 - Associate Professor, Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

Received: 2016-10-22 Accepted : 2017-05-23 Published : 2020-08-22

Keywords: renewable, photovoltaic, zero energy, actual value, Commercial building,

Abstract :

Background and Objective: The expansion of wind and solar power generators has led to the development of buildings equipped with renewable sources. The main purpose of this article is to design a zero energy building from a technical and economic point of view. In the technical dimension, the capacity of renewable sources, type of materials, location and direction of construction, height are determined according to the type of electric cooling and heating charges. In the economic dimension, with the help of cost-benefit analysis, the cost-effectiveness of constructing such buildings is examined. Methods: In this paper, first the amount of solar energy potential is calculated, then according to the climatic characteristics of Ahvaz city, the amount of electric, heating and cooling load is calculated and using software models, these data are correct. They are measured. By examining software and modeling using AutoCAD software and Design builder analytical software, the best technical design is extracted and System Advisor model (SAM) software is used to select the system size and the cooling system software model is used. The solar is simulated with PISTACHE software and the Net Present Value (NPW) measurement and COMFAR software are used for economic analysis. The landscape intended for the design of the building is 20 years old. Finding: Using numerical and software technical evaluation, the selection of the best technical design in a commercial building with a total land area of ​​1500 square meters and 460 square meters of infrastructure with 15 commercial units on two floors was reviewed. The research results show that the building with Paying attention to the weather conditions in the city of Ahvaz, 15 degrees to the south should be designed and constructed so that we have the most radiation towards the roof of the building in summer and also the body of the building in winter. In addition, considering the reliability and connectivity of the building to the electricity of the national network, it was determined that the problems of load supply in the building are minimized and the building can trade with the network so that in summer, electricity must be supplied from the national grid and in winter, additional electricity must be injected into the grid. Discussion and Conclusion: Finally, using technical analysis, it is shown that the thermal and refrigeration needs of the building can be met from solar energy with regard to reliability, and also economic analysis shows that the design of the building is zero energy compared to The non-optimal condition of the building has a net profit and is economically viable.

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