Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Multi-objective Sizing Optimization of Borehole Heat Exchangers

Seung-Hoon Park1, Byung-Ki Jeon1, Yong-Sung Jang2, Eui-Jong Kim1
1Department of architectural engineering, INHA University, Incheon, South Korea
2GS E&C, Seoul, South Korea Contact information

Abstract: Adequate sizing of borehole heat exchangers (BHE) is crucial for successful design of the ground-coupled heat pump (GCHP) system. Very recently, simulation-based sizing methods have been proposed using an optimization tool and the TRNSYS duct storage (DST) model. Other than existing BHE models, the DST model can describe the bore field by setting fewer parameters, apt for optimization. However, the DST model cannot account for irregular BHE arrangements which are common in many projects. In this work, the L-shape bore field is simulated with the DST model by modifying a DST parameter. Varying design entering water temperatures, several optimal sets of design variables such as the spacing, number of boreholes, and unit length are calculated, which form Pareto solutions. Each point on the Pareto curve indicates a possible sizing solution. This new sizing method provides an amount of information that is useful for a decision process.
Pages: 407 - 413