A novel method to determine air leakage in heat pump clothes dryers

Bansal, Pradeep; Mohabir, Amar; Miller, William

doi:10.1016/j.energy.2015.12.051

A novel method to determine air leakage in heat pump clothes dryers

Journal Article · Wed Jan 06 00:00:00 EST 2016 · Energy (Oxford)

DOI:https://doi.org/10.1016/j.energy.2015.12.051· OSTI ID:1328273

^[1]; ^[1]; Miller, William ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy & Transportation Science Division

A heat pump clothes dryer offers the potential to save a significant amount of energy as compared with conventional vented electric dryers. Although heat pump clothes dryers (HPCD) offer higher energy efficiency; it has been observed that they are prone to air leakages, which inhibits the HPCD's gain in efficiency. This study serves to develop a novel method of quantifying leakage, and to determine specific leakage locations in the dryer drum and air circulation system. The basis of this method is the American Society of Testing and Materials (ASTM) standard E779 10, which is used to determine air leakage area in a household ventilation system through fan pressurization. This ASTM method is adapted to the dryer system, and the leakage area is determined by an analysis of the leakage volumetric flow - pressure relationship. Easily accessible leakage points were quantified: the front and back crease (in the dryer drum), the leakage in the dryer duct, the air filter, and the remaining leakage in the drum. The procedure allows investigators to determine major components contributing to leakage in HPCDs, thus improving component design features that result in more efficient HPCD systems.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1328273

Alternate ID(s):: OSTI ID: 1359056

Journal Information:: Energy (Oxford), Journal Name: Energy (Oxford) Journal Issue: C Vol. 96; ISSN 0360-5442

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Modeling of heat pump tumble dryer energy consumption and drying time Gatarić, Pero; Širok, Brane; Hočevar, Marko Drying Technology, Vol. 37, Issue 11 https://doi.org/10.1080/07373937.2018.1502778	journal	October 2018

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42 ENGINEERING
HPCD
Heat pump clothes dryer
air leakage
efficiency
vented dryer

A novel method to determine air leakage in heat pump clothes dryers

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