The diagnosis before the design.
Why engineers solve the wrong problem, and how to stop. The most costly engineering failures are rarely calculation errors. They are diagnosis failures: solving the wrong problem, correctly.
This session was delivered live and hosted by OSPE, which makes Thought Leadership Thursdays recordings available to its members. We are working to make a recording available here. In the meantime, the summary below covers the substance of the talk.
The pattern
The instinct, when a system misbehaves, is almost always to escalate. More capacity. More heat. More sophisticated equipment. It feels like decisive engineering, and it is usually expensive and wrong.
The real fix comes from finding the one variable that actually controls the outcome. That variable rarely announces itself in the symptom. It shows up only when you connect what the system is doing to the physics underneath it.
Three cases from the field
A persistent humidity complaint
The obvious fix: add cooling capacity.
It was wrong. The answer came from psychrometry: determining the coil temperature, and the corresponding chilled water temperature, actually required for adequate dehumidification, then adjusting the system to deliver it. Capacity was never the constraint.
A furnace producing soft billets
The obvious fix: more firing.
It made things worse. Treating the symptom by raising the heat input pushed the process further from the condition the metallurgy actually required.
A quench system producing crooked bars
The obvious fix: change the nozzles.
It missed the actual variable entirely. The distortion was being driven by something the nozzle selection had no influence over.
The framework
Four steps, applied in order. Most failed diagnoses skip straight from the first to the last.
Your speaker
Dr. Mohamed Hamed, PhD, P.Eng., FEC
Over 40 years across industry practice and university teaching. Has designed and diagnosed HVAC, refrigeration, and thermal systems for commercial, institutional, and industrial facilities across Canada. Founded CANETCO, the Canadian Engineering Training Company, in 1997 to close the gap between engineering theory and field practice. More about CANETCO.
The next session is on September 24
Decarbonizing Buildings Starts with HVAC: A Practical Guide for Engineers. Where building energy waste actually hides, and the decisions that recover it.
See the next talk