District Energy Systems: buried_pipe_thermal
District energy systems design reference data — chiller technology COP ranges, pipe insulation thermal properties and moisture performance, soil thermal conductivity, buried pre-insulated pipe heat loss, piping material comparisons, direct vs. indirect interconnection trade-offs, heating system conversion suitability, and district energy flow meter types per ASHRAE Handbook HVAC Systems and Equipment 2020 Chapter 12
| category | item key | description | unit | value min | value text |
|---|---|---|---|---|---|
| buried_pipe_thermal | Pipe_OD_1p5in_k0p20_10ft | Buried district heating pipe: OD 1.5 in mineral wool 1 in urethane foam 1 in air space 1 in depth 10 ft soil k=0.20 | Btu/h-ft | 53.4 | Heat loss 53.4 Btu/h-ft |
| buried_pipe_thermal | Pipe_OD_2in_k0p80_10ft | Buried district heating pipe: OD 2 in mineral wool 1 in urethane foam 1 in air space 1 in depth 10 ft soil k=0.80 | Btu/h-ft | 72 | Heat loss 72.0 Btu/h-ft |
| buried_pipe_thermal | Pipe_OD_2in_k0p80_5ft | Buried district heating pipe: OD 2 in mineral wool 1 in urethane foam 1 in air space 1 in depth 5 ft soil k=0.80 | Btu/h-ft | 73.9 | Heat loss 73.9 Btu/h-ft |
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