Canada's only freelance senior thermal designer.
Fifty-plus years designing the shell-and-tube exchangers, air coolers, and pressure vessels that keep refineries, upgraders, and gas plants running. When the datasheet is hard, it lands on Don Fleming's desk.
Send your datasheet — direct reply from the engineer, not a sales team.
FIG. 1 — SHELL-AND-TUBE EXCHANGER, COUNTER-CURRENT FLOW. Hot process fluid (copper) passes through the tube bundle; cold fluid (blue) weaves across segmental baffles on the shell side. This is the equipment class PVHTC has designed for over fifty years — thermal and mechanical.
A track record you can check against the plants themselves.
More breechlock projects than anyone in Canada
PVHTC has worked on more high-pressure breechlock heat exchanger projects than anyone else in the country.
No-baffle grid-support design — 15+ years failure-free
A grid-support condenser designed by Don has run a vacuum service in a major chemical plant for over fifteen years without failure.
All-welded pipe at ~1/10th the cost
An all-welded pipe design that costs roughly a tenth of conventional double-pipe or hairpin exchangers.
The majority of Western Canada's refinery S&T designs
Responsible for the majority of shell-and-tube exchanger designs in Western Canada refineries and upgraders.
Exchanger and vessel designs delivered on projects for
Syncrude Suncor Shell Esso Petro-Canada Husky BP Tesoro
through Canada's major EPC firms — and directly through PVHTC since 1989.
Full-scope thermal and mechanical design.
From HTRI thermal rating to ASME/TEMA mechanical design and finite element analysis — one engineer, end to end.
Heat exchanger design & rating
Shell-and-tube, air-cooled, forced and natural draft — designed and rated on the full HTRI and HTFS suites.
Pressure vessels, towers & columns
Mechanical design to ASME and TEMA, pipe stress analysis, and finite element analysis for complex vessels.
Review & troubleshooting
Third-party design review, and thermal troubleshooting when an exchanger in service isn't doing what its datasheet promised.
The hardware behind the drawings.
Have a difficult exchanger? Send the datasheet.
You'll get a direct reply from the engineer who'll do the work — not a sales team. Email preferred; all business handled electronically.