Research Article
Experimental Study on the Temperature Field of Cold Region Tunnel under Various Groundwater Seepage Velocities
Table 1
Model test equipment and devices.
| Item | Specification |
| Constant temperature tank | Heating power is 6 kW, volume is 1,000 L | Pump | Water head is 9 m, flow velocity is 30 L/min | Thermal insulation tank | Volume is 18 L | Air blower | Maximum wind speed is 4 m/s | Temperature sensor | Resistance temperature detector (HSRTD-3-100-A) with an accuracy of ± 0.15°C | Flow meter | Liquid mass flow meter (DMF-1-1-A) with a precision of ± 0.2%, measurement scope is 0–40 kg/h | Ultrasonic anemometer | Measurement scope is 0–40 m/s, accuracy is 0.01 m/s | Refrigerator | Refrigerating power is 2 kW, minimum temperature is −30°C |
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