Q. What is a typical face velocity for a pumped glycol system like Konvekta?
A. Konvekta pumped glycol energy recovery coils work anywhere in the range from 50-1000 FPM face velocity. It’s typical for coils to be sized between 350 and 500 FPM.
There is always a trade-off between face velocity ( air pressure drop -> fan power) and thermal efficiency. In general, the lower the face velocity, the higher the thermal performance, and the higher the face velocity the higher the air pressure drop and hence fan power. Designing an energy recovery system, Konvekta always takes the cost of heating (thermal energy) and the cost of electric power (fan, pump) into account and designs the system at the optimal point considering the trade-off in thermal efficiency and electric power consumed.
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