Study of the insulation effect of freezing apparatuses |
| |
| Authors: | JingWu Huang JianPing Wang and Heng Wang |
| |
| Institution: | Shandong Fengyuan Coal Industry & Electric Power Co. Ltd., Zaozhuang, Shandong 277000, China;China Coal Research Institute, Beijing 100013, China;China Coal Research Institute, Beijing 100013, China |
| |
| Abstract: | In-situ tests and numerical manipulations were conducted for comparison of superior/inferior quality of casing-tube-vacuumized
insulation and polyurethane insulation of freezing apparatuses in relation to non-uniform cold distribution in the multi-coil freezing
layout and the contradiction between large-coil diameter layout of the freezing holes and stability of the headframe base. Tests
show that: (1) under current technology, vacuumized insulation is of short duration due to lack of appropriate applied vacuum; (2)
after the freezing pipe is insulated with polyurethane, the temperature gradient is less than no insulation, and the temperature difference
between insulated and non-insulated apparatuses is stable as the freezing period increases. Finally, it is pointed out that
polyurethane insulation is quite efficient in present technical freezing construction. |
| |
| Keywords: | freezing pipe insulation effect polyurethane energy conservation |
|
| 点击此处可从《寒旱区科学》浏览原始摘要信息 |
| 点击此处可从《寒旱区科学》下载免费的PDF全文 |
|
