Sustainability, climate resiliency, and mitigation capacity of geothermal heat pump systems in cold regions
نویسندگان
چکیده
Geothermal heat pump (GHP) systems have recently gained popularity in providing to buildings. In this study, the short-term and long-term performance of closed-loop horizontal GHP cold regions effectiveness seasonal balancing were investigated. A period 50 years was simulated cover life a conventional system. repeating block exchangers at three depths modeled series 3D multi-physics finite element simulations. Two operation modes defined, representing non-balanced mode through injection lake water summer. The climate conditions ground surface explicitly by defining temperature boundary condition. novel AI framework developed generate projections temperatures from air other atmospheric variables. An artificial neural network trained using measurements nearby weather station. Several training approaches compared minimize prediction errors. model then used convert downscaled outputs CanESM2 into temperatures. Finite models, two under change scenarios various exchanger spacing, verified comparing resulting with local measurements. processed extraction power, thermal output, carbon emissions. Results suggest that order attain stable throughout year, should be placed are not affected variations conditions. Simulations revealed depletion its inverse correlation spacing. approach showed enhancement total output 55%. system found resilient when subjected major pathways. rough estimate based on average footprint electricity production Canada, 100 save up 800 tons 1300 equivalent CO2 emissions over life, balanced modes, respectively.
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ژورنال
عنوان ژورنال: Geothermics
سال: 2021
ISSN: ['1879-3576', '0375-6505']
DOI: https://doi.org/10.1016/j.geothermics.2020.101979