District Energy Systems: pipe_insulation_properties
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 max | value min | value text |
|---|---|---|---|---|---|---|
| pipe_insulation_properties | Calcium_Silicate_Type_I_II | Calcium silicate pipe insulation ASTM C533 Type I/II | Btu/h-ft-degF | 0.038 | 0.028 | Thermal conductivity: 0.028 at 100F; 0.031 at 200F; 0.034 at 300F; 0.038 at 400F — Btu/h-ft-degF |
| pipe_insulation_properties | Cellular_Glass | Cellular glass pipe insulation ASTM C552 | Btu/h-ft-degF | 0.053 | 0.033 | Thermal conductivity: 0.033 at 100F; 0.039 at 200F; 0.046 at 300F; 0.053 at 400F — Btu/h-ft-degF |
| pipe_insulation_properties | Mineral_Fiber_Preformed | Mineral fiber preformed glass fiber pipe insulation ASTM C547 Type 1 | Btu/h-ft-degF | 0.028 | 0.022 | Thermal conductivity: 0.022 at 100F; 0.025 at 200F; 0.028 at 300F — Btu/h-ft-degF |
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