Engineering applicability of liquid circulation heat recovery system

Describes the working principle, composition, classification and characteristics of a liquid circulation heat recovery device, proposes the comprehensive evaluation method of the heat recovery system from the view of engineering application, and develops the mathematical model based on the ratio of recycling to investment. According to two typical projects in Beijing and Chongqing, proposes the economic operation temperature, calculates the comprehensive evaluation index in detail, and reveals the effects of location climate, length of ethylene glycol recovery pipe, investment payback period, system bypass and operation strategy on the comprehensive evaluation index.