The Quantitative Analysis Of Applications Of Public Sector Building Green Retrofit

With the continuous development of national economy,the increasing building energy consumption in our country,institutional building has a construction area of high proportion of small,energy consumption ratio and various office equipment,its building energy consumption growth is particularly prominent.At present,China's green building enterprise vigorous development,the existing buildings green renovation work in the initial stage,both the green building and no unified standard and evaluation method to improve.In order to implement the state council "the 12th five-year plan for energy conservation and emissions reduction" and "the comprehensive energy saving and emission reduction work" twelfth five-year "plan",to promote public institutions green transformation,improve public institutions energy efficiency,public institutions play a leadership in energy conservation in the whole society.This topic in our country concrete national condition,in a sustainable and green buildings for the principle,guided by the green building evaluation system at home and abroad,establishing a public institutions with rationality,feasibility and practicability of existing green building assessment quantitative method.This article selects cold region public institutions existing buildings as research object,the main characteristics of building energy consumption is bigger.Based on the survey data,both the application effects of the green building with public institutions quantitative feasibility analysis,including three aspects:first,understand the status quo of energy consumption of existing buildings is public institutions to dig the energy saving potential and the largest energy consumption of hvac systems,up to 70%;Secondly,according to the existing data,analysis of public institutions is both the factors influencing the energy consumption of the HVAC system and building green transformation effect;Finally,master the green reconstruction of existing buildings is public institutions,to determine the necessity of its quantitative analysis.To reasonable quantitative public institutions both effect of green building,improve public institutions existing green building assessment work,adopt the reasonable mathematical analysis theory,to establish a scientific public institutions both evaluation index weight system of green building foundation.By analyzing the advantages and disadvantages of each method of empowerment,in view of the public institutions both green building evaluation,determine reasonable empowerment methods,namely,the AHP method and Delphi method of composite empowerment approach.USES the questionnaire form,to the well-known domestic authoritative expert questionnaires,two rounds of consultation to obtain scientific and reasonable expert data,group decision to determine the relative weights of experts,to fix the expert subjective weight coefficient.Using software yaahp calculation,establish suitable for different stages of public institutions both evaluation index weight system of green building,the design phase and operation phase.Design stage primary index planning and construction,structure and materials,hvac,water supply and drainage,building electrical weight of 0.25,0.21,0.26,0.14,0.14,three indicators weight before the close,after two index weight and the same is minimal.Operation stage primary index planning and construction,structure and materials,hvac,water supply and drainage,building electrical,the weight of construction management,operation management,in turn,are 0.1997,0.1698,0.2089,0.1175,0.1175,0.0735,0.1175,hvac weights,the largest construction management for minimum.Experts data based on the analysis of the two evaluation stage,the consistency of index weight inspection level,and to all the experts judgment difference value analysis,determine the public institutions both the rationality of the evaluation index weight system of green building.In order to ensure the public institutions both evaluation index weight system of the green building applied,grading standards,a public institution in shandong province has to evaluate the application effect of green building,scored 63.49 points,for one grade,quantitative demonstration project green transformation,authentication institutions both green building evaluation index weight system is practical,powerful demonstration and guidance green renovation work of existing buildings is China's public institutions.