为了充分利用人防工事,决定将其改为地下教室。而地下室一年四季都需要采暖和降湿。原计划修建一台专供地下教室使用的半吨锅炉供热,并安装除湿机。但这种小型锅炉不仅热效率低、污染环境,而且还要占用一定的地面面积。同时投资费用和运行费用也都比较多。于是,决定采用热泵技术。地也下教室的两台热泵于1982年9月安装完 In order to make full use of the civil defense works, it was decided to change it to an underground classroom. The basement needs heating and dehumidification throughout the year. It was originally planned to build a half-ton boiler for exclusive use in underground classrooms and install dehumidifiers. However, such small boilers not only have low thermal efficiency, pollute the environment, but also occupy a certain amount of floor space. At the same time, investment costs and operating costs are also more. So, decided to use heat pump technology. Two heat pumps in the classroom and the classroom were installed in September 1982