当前城市化建设正在快速发展，随之供热需求所消耗的能源也在不断增加，致使北方冬季的空气污染加剧。工业余热的总量非常可观，若能加大力度收集用于供热，供热的能源消耗将有望大幅减少。太阳能、空气能热泵等分布式能源通常具有丰富的资源，且使用过程不会对环境造成污染和破坏，提高此类能源所占比例，能大幅减少由供热引起的能源消耗及造成的环境污染，有利于缓解北方空气污染等问题。以供应生活热水为例，对各种供热形式进行介绍及对比，得出了最具性价比、最清洁的供应方式；结合分布式能源的特点，提出以优先利用分布式能源及工业余热的多能互补供热系统，其比单独的集中式供热或分布式能源供热系统更具优势。

The construction of urbanization is developing rapidly, and the energy consumed by the heating demand is also increasing. The air pollution in the northern winter has been greatly aggravated. The total amount of industrial waste heat is very considerable. Recycling industrial waste heat for central heating, can reduce the heating energy consumption significantly. Solar energy, air energy heat pump and other distributed energy, have very rich resources, and it will not cause pollution and damage to the environment by using them. Increasing the proportion of such energy, can greatly reduce the energy consumption caused by heating and environmental pollution, and help ease the air pollution in the north. Taking the supply of domestic hot water as an example, this paper introduces and compares a variety of heat supply forms, and obtains the most cost-effective and most clean way. It is proposed that the heating system based on the combination of distributed energy and recycling industrial waste heat, has obvious advantages over single central heating or distributed energy heating system.