Conference Proceedings

2nd International E-Conference on Engineering, Technology and Management - ICETM 2020

Numerical Simulation of Underground Thermal Energy Storage Application in Universitary Buildings in Summer Conditions

Author(s) : Eusébio Z. E. Conceição, Hazim B. Awbi

Abstract

In this numerical simulation the Building Dynamic Software is used in an application of underground thermal energy storage in a university building with complex topology. The numerical simulation is made in summer conditions with mediterranean environment. In this numerical simulation, the passive and active solar strategies are considered. Building Dynamic Software calculates the air temperature of the spaces, the surface temperature of opaque bodies, transparent bodies and internal bodies, the mass of contaminants and water inside the spaces and in the surfaces, the thermal comfort and air quality and the energy transport and consumption. The university building is divided into 319 spaces, distributed by four floors, and is composed by 329 transparent surfaces (windows) and 3585 opaque surfaces (internal and external walls, doors, and others). Below the ground floor is considered, numerically, an underground floor, with the same area of the building and with a typical floor height, used to thermal energy storage. The building internal airflow, during the day, transport the airflow from the underground to uncomfortable spaces. In the morning, the airflow is transported to spaces turned to East and in the afternoon the airflow is transported to spaces turned to West. However, all day the airflow is transported to spaces turned south. A numerical simulation without and with underground thermal energy storage is made. In the numerical simulation the occupation and the internal ventilation are considered. In accordance with the obtained results the internal airflow rate used and the external air temperature during the day and the night, guarantee the underground thermal energy storage to cool the more uncomfortable spaces. The air quality is acceptable and the thermal comfort level, considering the adaptive concepts, guarantee levels near the suggested by the standards

Conference Title : 2nd International E-Conference on Engineering, Technology and Management - ICETM 2020
Conference Date(s) : 26, July 2020
Place : Online (Via Video Conference)
No fo Author(s) : 2
DOI : 10.15224/978-1-63248-189-4-13
Page(s) : 68-72
Electronic ISBN : 978-1-63248-189-4
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