Research On Energy Efficiency Control And Bidding Evaluation System Of Ventilation And Air Conditioning System In Metro Station

Among the nine major components of the subway station,the ventilation and air-conditioning system has a wide range of equipment types,wide distribution,complex structure,large construction investment,high energy consumption after commissioning,long maintenance period,and high maintenance pressure.Economic benefits have a significant impact.Aiming at the problem that the ventilation and air-conditioning system is easily affected by subjective factors and lack of consideration of operation and maintenance factors during the bidding decision-making evaluation,after research and analysis in the work,a relatively complete scientific and systematic bidding evaluation of the subway station ventilation and air-conditioning system is proposed.The system makes bid evaluation decisions more objective and quantitative,can maximize investment benefits,and ensure the smooth implementation of engineering projects and the normal operation of subways.The main research contents are as follows:Study the structure,composition and control technology of the subway ventilation and air conditioning system,analyze the current energy-saving control technology,put forward a control strategy based on feedforward and feedback control compound variable frequency speed regulation technology to reduce system energy consumption,and analyze the subway operation and maintenance The influencing factors such as the equipment operation efficiency,the fixed number of maintenance personnel,and the amount of maintenance equipment in the system have laid the foundation for the comprehensive and systematic establishment of the subway ventilation and air-conditioning system evaluation index system.In view of the fact that the ventilation and air-conditioning system of subway stations are affected by many factors during the bidding evaluation,according to the current norms and standards,there are still high energy consumption and high operation and maintenance costs after the construction is put into operation.,Proposed an index system including five indicators including qualification part,technical part,business part,after-sales service and operation and maintenance,to achieve a comprehensive,scientific,effective,and objectively quantified bidding evaluation of subway ventilation and air-conditioning system.Select scientific and mature research methods to conduct a comprehensive analysis of the qualitative and quantitative indicators that affect the function of the system,and use the 9-scale method to quantitatively analyze the five indicators to obtain the weight value of each influencing factor indicator,and perform the calculation results Analyze and establish a hierarchical structure model.The evaluation system is based on consideration of all aspects of the subway station ventilation and air-conditioning system from bidding to construction to putting into use.It can save costs for the owner unit,meet the actual application of the project,and have obvious economic benefits.Combining analytic hierarchy process and fuzzy comprehensive evaluation method,applying the proposed bidding evaluation system of subway station ventilation and air-conditioning system to actual engineering cases,comprehensively evaluating each corresponding index in the bidding unit’s plan,obtaining the final evaluation result,and selecting the best Program.The case shows that the selection of the evaluation system is scientific and systematic,as well as the applicability and accuracy of the method.The paper adopts reasonable research methods,combined with actual engineering,provides important scientific reference for the current bidding evaluation of ventilation and air-conditioning systems in subway stations,and provides a practical method for the bidder to choose the optimal decision-making plan,which can effectively use the construction funds and prevent Human factors affect the project and bring into play the comprehensive benefits of investment.