In this column, I will describe the “issue” disclosed through analysis of the trend graph included in my January 2012 column. I will also introduce a new system and show its trend graph, leaving it up to the reader to discover the operational “issue” illustrated in the graph. The answer will be given at the start of next month’s column.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.