加油站油气回收系统综合效益评价OA

The comprehensive benefit of oil vapor recovery systems serves as the core basis for environmen-tal governance decision-making at gas stations.To evaluate this benefit under economies of scale,an entropy weight-based multi-indicator comprehensive evaluation method was employed across economic,environmental,and social dimensions.Using gas stations with four types of annual sales(2 000,5 000,10 000,and 20 000 tons)as samples,an evaluation model was constructed utilizing an indicator system that comprises net present value,vapor recovery rate,carbon emission reduction,and employee satisfaction.This model calculated and ana-lyzed the comprehensive benefits.The results indicated that the net present value was assigned the highest weight within the evaluation system.Influenced by the net present value losses and employee satisfaction,the compre-hensive benefit of installing a"Stage I+Stage II vapor recovery systems"was greater than that of a"Stage I+Stage II+Stage III vapor recovery systems."These findings demonstrate that under economies of scale,the input-output ratio of environmental facilities improves as the operational capacity expands.Consequently,the deployment of environmental facilities in large-scale gas stations can achieve a significantly higher comprehensive value.