Influence of system operation on the design and performance of a direct ground-coupled cooling system

Sizing of borehole heat exchangers (BHEs) for direct ground cooling systems (DGCSs) is a critical part the overall system design. This study investigates thermal performance and sizing DGCS with two different operation strategies using experimental simulation approaches. The traditional on/off strategy keeps constant room temperature. continuous has potential to reduce building peak loads by precooling space having variable temperature measures. results from laboratory-scale setup show differences in hourly extraction rates pattern applied. data also used develop model. that applying reduces lowers injection ground. For new BHEs, can result shorter owing significantly lower rates. existing decrease outlet fluid thus, increase capacity system. findings this have implications developing widespread use DGCSs.