Abstract
Regional integrated heating using renewable energy is an efficient way to achieve the target of carbon emission reduction. Based on geothermal sources, air source heat pumps, and inter-seasonal energy storage technologies, a multi-source integrated regional heating system is proposed, which can meet the requirement of heating in buildings. With a residential community with an area of 35700 m2 as the study case, the models of geothermal source heat pump and air source heat pumps are constructed. Next, the energy performance and environmental performance of the integrated district heating system are analyzed. The study manifests that the multi-source central heating system reduces the energy consumption by 45.73% in comparison with the tranditional boiler solution, and the CO2 emission is reduced by 787.83 tCO2. The multi-source heat pump system can achieve social benefits, with the help of reasonable dispatching between the source and load sides, and the contribution of renewable energy. The long-term stable operation of the energy system can be achieved. The study provides a theoretical reference for the application of the conventional energy systems combined with geothermal energy.
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