23 September 2011

A PRACTICAL STUDY ON APPLICATION OF LIFE CYCLE COMMISSIONING TO A DHC PLANT DURING THE OPERATION AND MAINTENANCE STAGE


In Japan, the importance of Commissioning (Cx) or TAB is well known to engineers, but there are as yet few examples of their application especially life cycle Cx. Within this background, analysis for eight years operation results on District Heating and
Cooling (DHC) plant were shown. Subject is one of the most effective DHC plant with the greatest thermal storage tank (in total 19,060m3) that is under operation (Completion: March,
2001). This plant is located near the Tokyo waterfront, and provides chilled and hot water to three office skyscrapers (over 150 m): one tall office building, a commercial institution, and a hall. A redevelopment plan for this area was announced in 1988, and the guidelines for the plan and specific were determined by a committee comprising academic experts, owners,
power companies and designers. This was an innovative approach at the time. As for result, there were some interesting results. Enhancement of effectiveness on chillers COP against
the aging is one of the topics. By means of continual long term measurement, analysis and
readjustment, we demonstrated the advantages of life cycle Cx.