Retro-commissioning Practice and In-depth Analysis Leading to Efficiency Optimization on HVAC Systems: Case Study on A Retail Mall in China
This paper presents a case study of a large-scaled retail mall air-conditioning system testing and commissioning(T&C)as well as retro-commissioning during the whole process from the construction stage to the 2-year operation stage.The system efficiency was improved significantly by cooling tower air flow distribution study,chilled water system and condensing water system balance,major equipment fine-tuning,etc.The T&C works started with the system design review and site instruments provision survey.The sufficient and accurate measurement data are the important part to evaluate the equipment and system performance.Further in-depth analysis of the system resistance,hydraulic balance as well as the plant overall efficiency,during the retro-commissioning stage,revealed the common problems and the root causes.The Building Management System(BMS)provides great potential and capacity for the automatic commissioning,preventive maintenance and intelligent control.Early ready of the BMS could play a very important role for the T&C.However,the BMS is always behind the schedule for the handover.Sensor soft errors are another common problem in the system,which affects the application of the control strategies.In this paper,the challenges and the corresponding technologies of the performance tests and the improvement measures are summarized for sharing with the building industry.
retail mall retro-commissioning energy saving
LI Wenpeng ZHANG Ye Raymond YAU YS SO KONG Wen-ping Jean QIN
School of Architecture,Tsinghua University,Mainland China Swire Properties Ltd.,Hong Kong SAR
国际会议
2017世界可持续建筑环境大会(the World Sustainable Built Environment Conference)
香港
英文
1761-1769
2017-06-05（万方平台首次上网日期，不代表论文的发表时间）