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Title: Measurement and analysis of clothes dryer air leakage

Abstract

Each year clothes dryer appliances are sold globally in the tens of millions. Both vented and ventless types are common and are heated by combustion, electric resistance, or electric heat pumps. In the dyer air path, segments can be defined between components such as the drum, blower, filter, screens or grills, and heat exchangers (where applicable). In this work, a technique was developed to experimentally measure air leakage into and from the segments of a clothes dryer. Detailed leakage measurements were taken on two vented and one ventless residential clothes dryer. The measurements were quantified as a leakage flow coefficient for each segment. For two dryers (one vented and one ventless), these flow coefficients were combined with in situ operating pressure measurements to determine leakage flow rates for each segment. For these two units under normal operation with air pressures within 0.5 kPa (50 mm water column) of ambient pressure, volumetric system air leakage was found to be about 20–60% of the blower airflow. Furthermore, a quasi–steady state psychrometric analysis was conducted on vented dryers with negatively pressurized drums. The analysis revealed that leakage quantity, location, and direction are essential to achieving an acceptable energy balance and accurate modeling resultsmore » for a vented heat pump clothes dryer but are of limited significance for vented electric resistance clothes dryers.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1649634
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Drying Technology
Additional Journal Information:
Journal Volume: TBD; Journal Issue: TBD; Journal ID: ISSN 0737-3937
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Boudreaux, Philip, Gluesenkamp, Kyle R., Patel, Viral K., and Shen, Bo. Measurement and analysis of clothes dryer air leakage. United States: N. p., 2020. Web. https://doi.org/10.1080/07373937.2020.1753765.
Boudreaux, Philip, Gluesenkamp, Kyle R., Patel, Viral K., & Shen, Bo. Measurement and analysis of clothes dryer air leakage. United States. https://doi.org/10.1080/07373937.2020.1753765
Boudreaux, Philip, Gluesenkamp, Kyle R., Patel, Viral K., and Shen, Bo. Thu . "Measurement and analysis of clothes dryer air leakage". United States. https://doi.org/10.1080/07373937.2020.1753765. https://www.osti.gov/servlets/purl/1649634.
@article{osti_1649634,
title = {Measurement and analysis of clothes dryer air leakage},
author = {Boudreaux, Philip and Gluesenkamp, Kyle R. and Patel, Viral K. and Shen, Bo},
abstractNote = {Each year clothes dryer appliances are sold globally in the tens of millions. Both vented and ventless types are common and are heated by combustion, electric resistance, or electric heat pumps. In the dyer air path, segments can be defined between components such as the drum, blower, filter, screens or grills, and heat exchangers (where applicable). In this work, a technique was developed to experimentally measure air leakage into and from the segments of a clothes dryer. Detailed leakage measurements were taken on two vented and one ventless residential clothes dryer. The measurements were quantified as a leakage flow coefficient for each segment. For two dryers (one vented and one ventless), these flow coefficients were combined with in situ operating pressure measurements to determine leakage flow rates for each segment. For these two units under normal operation with air pressures within 0.5 kPa (50 mm water column) of ambient pressure, volumetric system air leakage was found to be about 20–60% of the blower airflow. Furthermore, a quasi–steady state psychrometric analysis was conducted on vented dryers with negatively pressurized drums. The analysis revealed that leakage quantity, location, and direction are essential to achieving an acceptable energy balance and accurate modeling results for a vented heat pump clothes dryer but are of limited significance for vented electric resistance clothes dryers.},
doi = {10.1080/07373937.2020.1753765},
journal = {Drying Technology},
number = TBD,
volume = TBD,
place = {United States},
year = {2020},
month = {4}
}

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Works referenced in this record:

Experimental evaluation and thermodynamic system modeling of thermoelectric heat pump clothes dryer
journal, May 2018


Energy losses by air leakage in condensing tumble dryers
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Performance Analysis of an Electric Clothes Dryer
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