介绍几种现行室内采暖系统,针对按户计量收费的技术要求,提出了多种适应不同情况的旧有系统改造方案和新建计量收费供暖的方案,并分别指出了其优缺点和适用范围。 Several current indoor heating systems are introduced. According to the technical requirements of household metering and charging, a variety of old system rebuilding schemes and new schemes of heating and metering for charging are put forward. The advantages, disadvantages and application scopes are pointed out respectively.