本文介绍的双股单管水平串联供暖系统综合了双管和单管系统的优点,克服了它们的缺点。这种系统不易产生水平失调,还可以克服竖向水力失调,并且比单管异程式系统节省金属耗量11％,节省投资6％。这种系统主要适用于工厂车间以及某些高层建筑的供暖工程中。 The double-stranded, single-tube horizontal series heating system described in this article combines the advantages of dual-tube and single-tube systems, overcoming their disadvantages. This system is not prone to horizontal misalignment, it can also overcome vertical hydraulic misalignment, and saves 11% more metal than a single-tube variant system, saving investment 6%. This system is mainly applied to the heating of the factory workshop and some high-rise buildings.