Skip to main content

Research Repository

Advanced Search

Optimum design of a PV driven transpired plate solar air heater for drying woodchip in Scotland.

Grassie, Tom


Tom Grassie


The design and operation of a PV driven solar air heating system for drying woodchip is considered. For a given weight and moisture content of the woodchip sample, the effect of the dryer unit configuration on drying rate, that is, either operating with a thick or thin layer of woodchip, is discussed. Six alternative collector designs, based on absorber plate hole spacing and diameter, absorber material type, and the use of a collector cover are presented in relation to the ability of the complete system to dry the given sample. It is found that the system operating with the thin layer dryer in combination with the covered collector with aluminium absorber comprising 3mm holes at 3.0 cm pitch provides the highest annual yield of dried woodchip.

Presentation Conference Type Conference Paper (unpublished)
Conference Name Solaris 2011: 5th International Conference on Solar Radiation and Daylighting
Start Date Aug 10, 2011
End Date Aug 11, 2011
Publication Date 2011
Deposit Date Jun 10, 2015
Publicly Available Date Jun 10, 2015
Peer Reviewed Peer Reviewed
Keywords Solar air heaters; Drying woodchip; PV driven;
Public URL
Contract Date Jun 10, 2015