Analysis of deep borehole heat exchanger with horizontal branch wells for building heating

Abstract The development and application of enhanced geothermal system hydrothermal are constrained due to high cost risk induced seismicity or heavily reliance on hot water reservoir. Deep borehole heat exchanger (DBHE) technology is independent reservoir hydraulic fracturing; however, the poor thermal conductivity rocks limits its performance improvement. To deal with these problems, a novel for acquiring energy using DBHE horizontal branch wells (DBHE-HBW) proposed here. It found that DBHE-HBW has better than and, under condition nearly equal total cross-sectional area well tube, smaller tube diameter, greater output shorter payback period DBHE-HBW. Therefore, can be recommended large-scale in building heating sector.