Analytic Method for the Design and Analysis of Geothermal Energy-Integrated Space Heating and Cooling Systems

Novel analytic modeling and design method is proposed for the analysis of geothermal-integrated energy systems which provide space heating and cooling. Rather than building a complex optimization framework, an analytic design procedure is developed to determine hourly and monthly distribution of renewable-sourced energy and its sizing in a systematic manner by considering renewable characteristics and energy storage. The new design method also allows to fully realize the advantage of geothermal energy through the seasonal supply of heating and cooling and to accommodate variable generation of other renewables. The benefit of this short-cut design method has been fully illustrated with two case studies in which geothermal energy is used for the provision of combined heat and cooling in domestic and commercial applications. Case studies also demonstrate the impact of time-dependent generation of renewable energy on the sizing of energy suppliers and its seasonal or hourly allocation of working loads.