顺天门土遗址保护热环境研究

Thermal Environment for Protecting Shuntianmen Earthen Site

对顺天门土遗址夏季室内外热环境参数进行了现场测试,并用Design Builder软件建立遗址博物馆模型,模拟博物馆遗址展示厅的热环境。在24 h测试时间内,简易铁皮工棚内空气温度变化范围为24.46~47.10℃,波幅为22.64℃,表明热环境现状不稳定,对遗址保护不利。根据模拟分析,博物馆建筑在自然运行条件下,与实测同一时间24 h内空气温度变化范围为22.68~23.91℃,波幅为1.23℃,表明博物馆建筑可以为土遗址提供稳定的热环境,减缓土遗址的破坏。根据全年逐时温度模拟结果,遗址展示厅内的空气温度32.35%的时间可达到遗址保护的要求(9~19℃),节省了设备能耗。研究对土遗址保护适宜热环境进行了分析,为土遗址保护及遗址博物馆设计提供参考价值。

The indoor and outdoor thermal environment parameters of the Shuntianmen Earthen Site was tested in summer with Design Builder software to establish a site museum model,and simulate and predict the thermal environment in the site exhibition hall while the museum was completed. During the24 h test period,the indoor air temperature range of the earthen site in the simple metal work shed was24. 46~47. 10 ℃,the amplitude was 22. 64 ℃,and the temperature fluctuation was large,indicating that the current thermal environment is unstable and not conducive to the protection of the earthen site.According to the simulation analysis,under the natural operation condition,the air temperature change range is 22. 68~23. 91 ℃,and the amplitude is 1. 23 ℃ within 24 hours at the same time as the actual measurement. It is shown that establishing museum can provide a stable thermal environment for earthen sites and slow down the destruction of earthen sites. According to the hourly temperature simulation results throughout the year, the air temperature in the site exhibition hall can reach the site protection requirements( 9~19 ℃) in 32. 35% of the time,saving energy consumption of the equipment. This study analyzes the suitable thermal environment for the protection of earthen sites,and provides reference value for the protection of earthen sites and the design of site museum.