冬季使用真空管太阳能热水器应注意的问题山东省诸城市农村能源办公室胡炳民许多安装真空管太阳能热水器的用户反映，在进入冬季以后，有的循环管裂了，造成热水器的热水不断渗漏；有的打开热水开关，竟没有热水流出；还有的溢水管不透气……．出现的这些问题，都与真空管... Winter use of vacuum tube solar water heater should pay attention to the problem Shandong Province Zhucheng rural energy office Hu Bingmin many installed vacuum tube solar water heater users reflect that after entering the winter, some circulation pipe cracked, causing the water heater water leakage; some open Hot water switch, there is no hot water out; there are overflow pipe airtight ....... The emergence of these problems, all with vacuum tube ...