Open-loop heat-recovery dryer

TeGrotenhuis, Ward Evan

Title: Open-loop heat-recovery dryer

Patent · Tue Nov 05 00:00:00 EST 2013

OSTI ID:1107888

TeGrotenhuis, Ward Evan

A drying apparatus is disclosed that includes a drum and an open-loop airflow pathway originating at an ambient air inlet, passing through the drum, and terminating at an exhaust outlet. A passive heat exchanger is included for passively transferring heat from air flowing from the drum toward the exhaust outlet to air flowing from the ambient air inlet toward the drum. A heat pump is also included for actively transferring heat from air flowing from the passive heat exchanger toward the exhaust outlet to air flowing from the passive heat exchanger toward the drum. A heating element is also included for further heating air flowing from the heat pump toward the drum.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RLO1830

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Number(s):: 8,572,862

Application Number:: 12/911,631

OSTI ID:: 1107888

Country of Publication:: United States

Language:: English

References (16)

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Drying plant, particularly for timber Berti, Furio https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4196526 US Patent Document 4,196,526	patent	April 1980
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Energy efficient tobacco curing and drying system with heat pipe heat recovery Dinh, Khanh https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6742284 US Patent Document 6,742,284	patent	June 2004
Methods of contacting substances and microsystem contactors TeGrotenhuis, Ward E.; Rassat, Scot D.; Stenkamp, Victoria S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6869462 US Patent Document 6,869,462	patent	March 2005
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