Performance analysis of a proposed geothermal pile system for heating and cooling energy demand for a building in cold regions
| Autor: | Maryam Saaly, Pooneh Maghoul, Dimos Polyzois, Miroslava Kavgic |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
geography
geography.geographical_feature_category Renewable Energy Sustainability and the Environment business.industry Geothermal energy Geography Planning and Development 0211 other engineering and technologies Enclosure Transportation 02 engineering and technology 010501 environmental sciences Urban area 01 natural sciences Basement Mining engineering Thermal HVAC Environmental science 021108 energy business Pile Geothermal gradient 0105 earth and related environmental sciences Civil and Structural Engineering |
| Zdroj: | Sustainable Cities and Society. 45:669-682 |
| ISSN: | 2210-6707 |
| DOI: | 10.1016/j.scs.2018.12.014 |
| Popis: | In this paper, the performance of a proposed geothermal energy pile system for the energy demand of an institutional building is investigated. The building studied in this research is situated in the Fort-Garry campus of the University of Manitoba in the southernmost portion of Winnipeg (MB) in Canada. In an urban area, underground temperatures are substantially higher than the surrounding rural areas due to the buildings heat leakage to their underneath ground. In this study, this heat loss is harvested through geothermal piles and rejected to the building for the HVAC system utilization. The underground thermal imbalance, which is the most common problem encountered while utilizing the geothermal energy in cold regions, is extensively studied. It is concluded that despite the heat leakage through the basement enclosure, thermal balance of the soil, in case of supporting the total energy demand of the building by geothermal piles, cannot be met. The application of some auxiliary heat sources is proposed. Finally, the amount of energy harvested from the ground is calculated by maintaining the thermal balance of the soil and preventing the freezing at the soil-pile interface which affects adversely the structural performance of geothermal piles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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