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 DDC system trending capabilities and computer hardware storage capacities have improved substantially over the past few years, I propose that trend logs be given a more prominent place in the commissioning toolbox.
Last month, we started this series on the use of VFDs as part of a control system. We talked about the many benefits and some recommended cautions in applying the use of this technology.
As I read the press release, something about the DOE’s planned user test bed facility at Lawrence Berkeley National Lab reminded me of the old Wendy’s commercial from the ’80s that most of you are, uh, mature enough to recall.