Using data trend logs to supplement in-field functional performance testing (FPT) has always been an option in the commissioning process, particularly for HVAC systems controlled by DDC systems. As ...

This column is the continuation of a series in which I demonstrate examples of systems performance information that can be gleaned from trend log analysis. In these columns, I introduce a system or ...

A new study suggests that the format in which graphs are presented may be biasing people into being too optimistic or pessimistic about the trends the graphs display. Academics found that when people ...