A distributed heat transfer model for thermal-hydraulic analyses in sewer networks

Thermal-hydraulic considerations in urban drainage networks are essential to utilise available heat capacities from waste- and stormwater. However, models either too detailed or coarse; fully coupled thermal-hydrodynamic modelling tools lacking. To predict efficiently water-energy dynamics across an entire network, we suggest the SWMM-HEAT model, which extends EPA-StormWater Management Model with a heat-balance component. This enables conducting more advanced simulation at full network scale than currently possible. We demonstrate usefulness of approach by predicting temperature two independent real-world cases under dry weather conditions. furthermore screen sensitivity model parameters guide choice suitable future studies. Comparison measurements that predicts adequately, RSR values ranging between 0.71 1.1. The results our study show modelled in-sewer wastewater temperatures particularly sensitive soil headspace temperature, humidity. Simulation runs generally fast; five-day period high temporal resolution 415 nodes during was completed few minutes. Future work should assess performance for different applications perform comprehensive analysis scenarios. facilitate efficient estimation budgets sewer integration into planning, code is made publicly available.