Review on the development and utilization conditions of shallow geothermal energy and multiple energy combined application in alpine region

This research focuses on the heating and cooling demand of the buildings and the development and utilization conditions of shallow geothermal energy in alpine region, which would promlte the maximum use of shallow geothermal energy in energy supply of buildings. In addition, it explores the aombined application of multiple energy in supply heating to better solve the energy shortage problem in alpine region. The authors analyzed the plateau climate characteristics, and did research on the investigation, exploration, evaluation of shallow geothermal energy and combined application of multiple energy. The results show that shallow geothermal energy is mainly used for winter heating and hot water supply in alpine region, and the demand is great. The resource grade of shallow geothermal energy in alpine region is low with little heat transfer temperature difference. The most economical mode of heat exchanging is groundwater source heat pump, and there is little space for the development and utilization of shallow geothermal energy in cities. The deep geothermal energy and solar energy are abundant in the study area, and these resources could be fully utilized through the way of basic load and peak-regulating load to solve the problem of great heat demand and improve energy utilization efficiency.