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Fixed-bed regenerator (FBR) is a type of air-to-air energy exchanger used to reduce the energy consumption in HVAC systems. Employing corrugated plates improves the heat transfer performance of FBRs. In this study, the thermohydraulic performance of an FBR with corrugated plates is compared with that of an FBR with parallel plates. The sensible effectiveness of corrugated plate FBR is experimentally evaluated in a smallscale test facility. A validated numerical model is used to predict the performance of the parallel plate FBR. The average heat transfer coefficient of corrugated FBR is determined from the measured data and Kays and London regenerator correlation. The heat transfer coefficient and effectiveness of corrugated plate FBR are 150% and 37% higher than those of parallel pate FBR at a Reynolds number of 1450. Similarly, the friction factor of corrugated FBR is also increased nearly six times that of parallel plate FBR. Results from the present study can be used to design FBRs and evaluate their effectiveness for a range of Reynolds numbers from 500 to 1450.

Influence of Plate Geometry on Thermohydraulic Performance of Fixed-Bed Regenerators