Study On Post Occupancy Evaluation Of Green Public Buildings

With development of green buildings and energy-saving buildings, more attentionhas been focused on operational performance of green builidngs. Foreign study hasindicated that part builidngs have not reached the expected result. In China, there lacksrelevant study, and current evaluation systems are insufficient for comprehensivequantitative assessment of operational performance.The aim of research work in this thesis is to bring out a comprehensive evaluationwhich gives quantitative results. Research work has been carried about evaluationmethods, evaluation contents and assessment system. Survey has been made on green,energy-saving or demonstration public buildings in cities like Suzhou, Shanghai,Beijing, Tianjin and Shenzhen to analyse series of issues in these buildings operationalphase. And4representative cases have been chosen to carry out deep analyses.Furthermore, cost-effectiveness analysis has been carried out about commonly-usedtechnologies. The main achievements of this research are:Firstly, A comprehensive post-occupancy evalution system has been given, with theQ (Quality)-L (Load) charts as its final rating system. The system includes four contents:energy consumption, water use, environmental quality and building functionperformance.Secondly, tentative evaluation results of4representative cases were given, toverify the feasibility and reasonability of the Post-Occupancy Evaluation (POE) system.And revision work has been done about the system, according to energy comsumptiondistributive characteristics of local buildings and values of occupant average satisfactiondegree of indoor environment quality and service quality. Detailed study of aircondition systems of2cases have been carried to find out unreasonable energy useitems, thus verifying that it is feasible to use3kinds of energy consumption indexes toanalyse the buildings’ energy use systems.Besides, for the checklist evalution meathods used in current green building designphase, problems rise that plenty of technologies are used while the actual results are notquaranteed. Assessment of a series of commonly-used green building technologiesshowed that passive design can be very effective in practice, such as natural ventilation, daylighting, and underground air preheating tunnels. Analysis needs to be donecase-per-case to decide whether to use light pipes, sunshading, air renewal with heatrecovery, and solar hot water system. As photovoltaic is a technology withhigh-investment costs and low efficiency, it is not suited for general use.Finally, profiles and data that should be collected for the POE system have beensummarized, shortcomings in current monitoring systems have been pointed out tomake suggestions for further study. Achievements of this thesis study give goodreference for operational performance promotion and feedback for design phase ofgreen building.