Heat recovery and ventilation system for dryers

Details Heat recovery and ventilation system for dryers Heat recovery and ventilation system for dryers

2005-12-06

2009-08-11

Rinehart, Kenneth B (Department: 3743)

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

C034S558000, C034S210000

Reexamination Certificate

active

07571554

ABSTRACT:
According to one embodiment, a ventilation system includes a heat-recovery device for pre-heating make-up air with exhaust air from multiple drying chambers (e.g., dry kilns for drying lumber). The ventilation system includes ductwork connecting the drying chambers to the heat-recovery device in a parallel arrangement. Supply ductwork for supplying pre-heated make-up air from the heat-recovery device to the drying chambers includes a main supply duct, or conduit, in fluid communication with the heat-recovery device and plural branch supply conduits, each of which establishes fluid communication with the main supply conduit and a respective drying chamber. Return ductwork for delivering exhaust air from the drying chambers to the heat-recovery device includes a main exhaust duct, or conduit, in fluid communication with the heat-recovery device and plural branch exhaust conduits, each of which establishes fluid communication with the main exhaust conduit and a respective drying chamber.

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