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Title: Open-loop heat-recovery dryer

Abstract

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.

Inventors:
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1107888
Patent Number(s):
8572862
Application Number:
12/911,631
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
D - TEXTILES D06 - TREATMENT OF TEXTILES OR THE LIKE D06F - LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
F - MECHANICAL ENGINEERING F26 - DRYING F26B - DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
DOE Contract Number:  
AC05-76RLO1830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

TeGrotenhuis, Ward Evan. Open-loop heat-recovery dryer. United States: N. p., 2013. Web.
TeGrotenhuis, Ward Evan. Open-loop heat-recovery dryer. United States.
TeGrotenhuis, Ward Evan. Tue . "Open-loop heat-recovery dryer". United States. https://www.osti.gov/servlets/purl/1107888.
@article{osti_1107888,
title = {Open-loop heat-recovery dryer},
author = {TeGrotenhuis, Ward Evan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 05 00:00:00 EST 2013},
month = {Tue Nov 05 00:00:00 EST 2013}
}

Works referenced in this record:

Microsystem process networks
patent, October 2006


Low Pressure Carrier Gas Simulation
patent, November 1965


Devices with extended area structures for mass transfer processing of fluids
patent-application, November 2005


Heat pump closed loop drying
patent, August 1986


Multiple outlet air path for a clothes dryer
patent, April 2006


Heat pump clothes dryer
patent, June 2006


Household appliance containing a heat transfer fluid
patent, January 2013


Methods of contacting substances and microsystem contactors
patent, March 2005


Exhaust air dryer with heat exchanger
patent, September 2012