Evaluation on retrofit scheme for original heating network of old industrial district

With the retrofit scheme for the original heating network of old industrial district, establishes a function evaluation index system, and calculates the cost in terms of the whole life cycle by using discounted cash flow method. Based on value engineering, evaluates each retrofit scheme through the value coefficient. Applies the evaluation system to a practical project for analysis. The result shows that the evaluation method is reasonable and can provide reference for the heating network transformation.