Renovation design of air conditioning and refrigeration system in National Indoor Stadium

 The National Indoor Stadium is located in the Olympic center area, which is the venue for the gymnastics, trampoline and other sports of the 2008 Beijing Olympic Games. According to the event arrangement, the National Indoor Stadium hosts ice hockey during the Olympic Winter Games, ice sleigh and ice hockey during the Paralympics Olympic Winter Games. This paper discusses the renovation design of the air conditioning and refrigeration system for the transformed venues. It makes a comprehensive energy saving diagnosis for the venues, and replaces the main equipment such as the refrigeration unit according to the energy saving diagnosis report. According to the needs of the competition, the process design of dehumidification and ice making is added, with emphasis on energy saving, environmental protection and epidemic prevention and control, and the design experience and suggestions is summarized.