Toward sustainable energy management of a sports complex with use of solar energy and thermal demand management

Abstract

Net zero energy (NZE) buildings obtain their energy from clean renewable resources. The current study aims to design and analyze a pioneering sports complex based on the net zero energy (NZE) concept, incorporating a football stadium and two swimming pools as a case study. Despite the common occurrence of such sports complexes, limited studies have been conducted to develop NZE systems tailored to this type of sports complexes. A solar field with 10000 m² photovoltaic panels installed on the rooftop of the stadium provides the required energy. The generated energy in daytime is stored through compressed air energy storage (CAES) cycle to be used after sunset on demand time. The compressed air runs turbines and generates the required electricity for the stadium. Also, the generated thermal energy is used to warm up the swimming pools. Environmental and meteorological data are used to perform transient studies. Dynamic simulations are done through TRNSYS, and results show that the overall efficiency of the cycle is around 44% which can increase to 98% if using the thermal energy in swimming pools. Due to solar energy fluctuations, on average, 14% of the required energy should be provided from the grid, while more than 26 MW · h a day can be sold to the grid. Results of this study help to design NZE sport complexes to move toward sustainable energy development.

Keywords

sustainable development / net zero energy buildings / compressed air energy storage / solar energy / sports complex / swimming pool

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