本文主要介绍一种新的单管热水采暖系统水力计算方法。它是利用市场上常见的日本SHARP公司生产的EL-5002型(100～150元/台)、国产广州8031型及大连DS-5型袖珍式计算器,代替昂贵、复杂、计算费用高的电子计算机快速准确地完成管路的阻力平衡计算。据实践,一般5～15层建筑物,异程系统仅用半天、同程系统仅用一天即可精确地完成全部水力计算。 This article mainly introduces a new method of single-tube hot water heating system. It uses the EL-5002 type (100 to 150 yuan/set), the domestic Guangzhou 8031 ​​type and the Dalian DS-5 type pocket calculator manufactured by Japan’s SHARP Corporation to replace the expensive, complicated and expensive electronic components. The computer quickly and accurately completes the resistance balance calculation of the pipeline. According to practice, generally 5-15-story buildings, the halfway system, and the same-way system can accurately complete all the hydraulic calculations in only one day.