Energy Saving And Efficientcy Evaluation Method For The Ventilation Duct Renovation Of Existing Buildings

Our existing building currently stands at 4.2×1011 square meters of existing buildings, with the social and economic development, people's material living standards rising desire to enjoy the modern facilities and equipment continued to strengthen, air-conditioning system has been more and more applications At the same time, air-conditioning system needs to consume more and more energy, and there is the issue of energy waste. This requires a new evaluation method, not only consider the energy efficiency of the traditional economy of a single evaluation or to reflect the energy saving advantages.Value Engineering (VE) Value Engineering referred to the target object function and cost is the study of the ratio between them, seeking the best match between the object and improve. The Life Cycle Cost (LCC referred by tourists, es) is a kind of product lifecycle, including from raw materials collection, processing, production, transportation, sales, use, reuse and maintenance to the final disposal etc resources and environment impact analysis and evaluation. AHP (Analytic Hierarchy Process (AHP), the decision is always related elements is decomposed into target, criterion, solutions, based on qualitative and quantitative analysis for the decision-making method. In view of this, this paper absorbs the three evaluation methods, use the advantages of value engineering of function and cost ratio between the thought to reflect the air conditioning and ventilation duct in change the value of evaluation, according to the requirement of function and the cost of the definition, And using AHP analysis function, Using the LCC of cost, which is calculated using the discount. A new, more accord with existing buildings air-conditioning ventilation duct of comprehensive evaluation method based on the value of the project life cycle cost evaluation method.This topic in air conditioning ventilation duct system of energy saving reconstruction selection.Based on engineering example is analyzed and compared. The results show that the comprehensive evaluation of the air conditioning and ventilation pipe both architecture energy-saving reconstruct integrated evaluation method is a comprehensive consideration of the various factors have both energy and economy of scientific evaluation and decision method of energy-saving building, reconstruction project plan has the vital significance.