Flow alone is meaningless: how to actually specify a fan duty
The eight parameters that define a duty, the actual-vs-standard flow trap, and the cold-start power spike — with a checklist. Read →
Field-tested notes on fan selection, energy and reliability — written engineer-to-engineer. Every note is cross-checked against our engineering reference and job record before it goes up.
The eight parameters that define a duty, the actual-vs-standard flow trap, and the cold-start power spike — with a checklist. Read →
Two quotes, same flow and pressure, two different fans — the seven gaps and the RFQ line that closes each. Read →
FC, backward-curved, radial or radial-tip — a one-page map from airstream cleanliness, pressure and efficiency to blade form. Read →
What static, velocity and total pressure each mean — and the fan-static-vs-fan-total distinction that quietly changes the selection. Read →
Rank outlet damper, inlet damper, IGV and VFD by the energy they cost you — and know which damper actually seals. Read →
Fan power varies with the cube of speed — a 20% speed cut roughly halves the bill. Read →
A real APC fan, anonymised: clean-side wheel, spark ring, and the P-Q curve that holds capture velocity through a cleaning pulse. Read →
The five EPA capture configs, pre- vs post-baghouse wheel choice, and why acid and dust pull the spec opposite ways. Read →
A ~40,000 CMH fan at 350°C: tested cold, corrected by the fan laws, and sized for the dense cold-start. Read →
Single-inlet high-static selection at 610 mmWG, hygienic construction, and the one datasheet line that sizes the machine. Read →
AR plate, chromium-carbide overlay or ceramic? Rank abrasion protection by ASTM G65 wear rate, not hardness. Read →
A boiler ID fan that kept failing re-balancing — because the pedestal was resonant, not the wheel unbalanced. Read →
Read imbalance, misalignment, bearing wear and looseness off one velocity spectrum — and why the trend beats the limit. Read →
The residual-unbalance arithmetic, a worked G6.3-vs-G2.5 example, and why critical service holds the tighter grade. Read →
Flow, static, gas temperature, application — or attach a spec, GA drawing or a multi-fan schedule. Engineer to engineer.
ISO 9001:2015 quality system · performance-tested to IS 4894 / ISO 5801 / AMCA 210 method · witnessed FAT on request, at no cost.
*For our standard range, additional days required for special projects