Inicio  /  Applied Sciences  /  Vol: 9 Par: 21 (2019)  /  Artículo
ARTÍCULO
TITULO

Economic Optimization of the Energy Supply for a Logistics Center Considering Variable-Rate Energy Tariffs and Integration of Photovoltaics

Alex Ximenes Naves    
Victor Tulus    
Elaine Garrido Vazquez    
Laureano Jiménez Esteller    
Assed Naked Haddad and Dieter Boer    

Resumen

The energy supplied by photovoltaic (PV) panels connected to the grid creates more flexibility for energy management; however, oversizing the PV system may result in an energy surplus, an essential factor to be considered during energy efficiency optimization. The economic analysis of energy supply systems for buildings and industry should include a detailed feasibility analysis and a life cycle perspective. Simulations were performed to quantify the potential savings when the excess of PV energy (surplus) is supposed to be exported to the grid by considering the net metering and net billing approaches. Our objective was to evaluate the electrical demand of a logistics center with pre-design modeling and simulation, and determine the adequate system configurations by considering the life cycle costing (LCC). We established a baseline and three alternative economic scenarios for optimization. Combining the use of TRNSYS 180 Simulation Studio and its optimization library component, GenOp (Generic Optimization Program), we simulated different options of grid energy contracts considering the variable tariffs and the integration with PVs. Based on the LCC, a single-objective optimization (SOO) process was performed. This approach allowed us to envisage possible configurations, reducing up to a quarter of annual grid energy consumption that represents savings of around 21% for the LCC in a timeframe of 20 years, reaching up to 39% when the export of the PV surplus energy is considered. The payback period of investments is below six years for the optimal scenarios.

 Artículos similares

       
 
Shuling Zhao and Sishuo Zhao    
Due to the intensification of economic globalization and the impact of global warming, the development of methods to reduce shipping costs and reduce carbon emissions has become crucial. In this study, a multi-objective optimization algorithm was designe... ver más

 
Jiexin Xu, Shaomin Chen, Yankun Gong, Zhiwu Chen, Shuqun Cai and Daning Li    
Internal solitary waves (ISWs) are large-amplitude internal waves which would destroy underwater engineering. Finding an easy way to discriminate ISWs from field observational data is crucial. Two time--series datasets, one contained ISWs and another onl... ver más

 
Helena M. Ramos, Modesto Pérez-Sánchez, Prajwal S. M. Guruprasad, Armando Carravetta, Alban Kuriqi, Oscar E. Coronado-Hernández, João F. P. Fernandes, Paulo J. Costa Branco and Petra Amparo López-Jiménez    
The world?s water infrastructures suffer from inefficiencies, such as high energy consumption and water losses due to inadequate management practices and feeble pressure regulation, leading to frequent water and energy losses. This strains vital water an... ver más
Revista: Water

 
Suliman Ali Al-Khateeb, Faisal Ibrahim Zeineldin, Nagat Ahmed Elmulthum, Khalid Mohammed Al-Barrak, Muhammad Naeem Sattar, Tagelsir Ahmed Mohammad and Akbar S. Mohmand    
Water scarcity has necessitated the adoption of water-saving techniques in both protected and non-protected farming. This study aimed to evaluate the performance of a water-saving soilless cultivation technique and compare it to conventional soil-based c... ver más
Revista: Water

 
Kristian Balzer and David Watts    
Modern electrical power systems integrate renewable generation, with solar generation being one of the pioneers worldwide. In Latin America, the greatest potential and development of solar generation is found in Chile through the National Electric System... ver más