节能的最简单方式是限制需要消耗能量的过程。但这种方式,通常因为它降低了生活与工业的使用标准而不适用。而采用减少能耗的技术,既节省能量、又不降低标准是完全可能做到的。本文描述了在建筑物和工业生产过程中使用的一种并联的利用一次能量的热回收系统。 The simplest way to save energy is to limit the processes that need to consume energy. However, this method is usually not suitable because it reduces the standards of use of life and industry. With technologies that reduce energy consumption, it is entirely possible to save energy without lowering standards. This article describes a parallel use of primary energy heat recovery systems used in buildings and industrial processes.