Experiment study on continuous commissioning a real VAV system

In order to study the automated continuous commissioning characteristics of VAV systems, a set of experiments were conducted on a real VAV system in the office building of Yamatake Building System Company. Four types faults, which are top problems amenable to automated continuous commissioning, were introduced into the VAV system. The performance data of the VAV system were measured and automatically recorded once a minute using a data logger. From the experiment results, three conclusions can be drawn: 1) Automated continuous commissioning is feasible if simulation analysis and operation records are used for commissioning, and new simulation models suitable for continuous commissioning are need; 2) Operation records are useful for continuous commissioning sensors; 3) If the status of a component changes, the relevant variables, such as supply air volume, air temperature, pressure etc., do not change simultaneously. Some variables change several minutes late. This change delay should be taken into consideration during automated on-line commissioning.