Preface

With the development of economic construction and the improvement of people’s living standards, China’s heating industry has also been rapid development. The vast majority of public buildings and industrial enterprises in the northern region are installed with central heating equipment, and residential buildings are also installed with heating equipment, which makes the living more comfortable and hygienic, and the environmental conditions have been greatly improved.
    Heating engineering is widely used in various sectors of the national economy, and is closely related to energy application, environmental protection, energy conservation and emission reduction, haze control and improvement of life quality. In order to make the heating system economic, energy-saving, safe and reliable operation, a large number of professionals with special knowledge are needed.
    In the process of writing, the author explained profound theories in simple language, acted in cooperation from start to finish and made foreign things serve China on the basis of the actual situation. The description text is simple and clear; the concept and principle are explained with pictures and texts; the key points are highlighted in the graphic expression; the examples are matched with the hydraulic calculation method. The form and content of heating system are expanded and extended.
    Due to the limited level of the editor, omissions are inevitable. Readers are requested to make comments and corrections.

前 言 

随着经济建设的发展和人民生活水平的提高，我国的供热事业也得到迅速发展。北方地区的绝大多数公共建筑和工业企业都装设了集中供暖设备，居民住宅也陆续装设了供暖设备，居住的更加舒适、卫生，环境条件得到很大的改善。
       供热工程广泛应用于国民经济各个部门，与能源应用、环境保护、节能减排、雾霾治理和提高生活质量密切相关。为了使供热系统经济、节能、安全、可靠运行，需要有一大批具有专门知识的专业人才。
       在编写过程中作者注意深入浅出，前后呼应；结合实际情况，外为中用。叙述文字简单明确；图文配合诠释概念和原理；图形表达侧重突出重点；例题与水力计算方法匹配。扩展和延伸了供暖系统的形式与内容。
      由于编者水平有限，难免存在疏漏与不妥之处，敬请广大读者批评指正。