Innovation Examination: A Closer Look at a New Idea

Dr. Stanley Mumma, Ph. D., PE, Fellow ASHRAE: "The (Regenerative Dual Duct^TM/SM System) uses far less active cooling resources than the traditional VAV system under all of the cases investigated, with VAV systems requiring up to 2.3 times the active cooling resource. The IEC unit, when properly sealed and maintained, does not pose any potential for cross contamination from the scavenger stream to the OA stream. This is not universally true for enthalpy wheels.

The (Regenerative Dual Duct^TM/SM System) system is a very clever and creative application of technologies that have been available for some time. For the most part, the published results on the energy performance of the (Regenerative Dual Duct^TM/SM System) cited in this article stand up to the author's third-party scrutiny.

The originator of this concept, Mark Lentz, deserves a great deal of credit for this very energy-innovative approach. And, more importantly, for taking the initiative to place a number of these systems into operation. The design is not straightforward, and requires a whole new way of thinking (paradigm)." - "Innovation Examination," Engineered Systems Magazine, April, 2005