Luba
MD
GL Collector – Technical manual
Version 1.0-EN-January 2012
© Enerconcept Technologies inc.
1
1.
The Luba
TM
GL
collector system
1.1 General information
The Luba
TM
GL air collector design is the result of a licencing cooperation between a leading
residential solar air heater manufacturer from Denmark and Enerconcept Technologies.
Enerconcept has entered an exclusive patent licence agreement with the Danish company Solar
Venti to adapt their invention to the requirements of large-volume, industrial and institutional solar
air heating of North America. The result is an easy to install, light an efficient roof-mounted solar
air collector.
The innovation lies in that the incoming fresh air enters the collector through the multiple
perforations across the entire back wall made of corrugated metal. Before entering the collector’s
plenum, the air is drawn in through the absorber made of black felt. The rugged surface of the
back causes a turbulent flow in the collector which leads to greater heat transfer hence, increased
efficiency.
The main feature is that the air gap created between the back wall and the absorber offers
enough thermal resistance to activate solar energy transfer to the incoming air, thereby
eliminating the need for insulation, which in turn allows for a thinner, lighter, easier to mount,
compact and simple solar air collector.
Other sizeable advantages arise from this: the felt acts as a partial filter and evens out the air flow
passing through the back wall, so that there is no insulation needed on the collector casing. The
collector remains light in weight, manufacturing is simplified and installation on site is made very
easy.
The following technical descriptions shall provide HVAC engineers and contractors with all the
necessary information for sizing and installation.
Figure 1: Operating principal of the Luba GL
