Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process

Dupuis, Eric D.; Momen, Ayyoub Mehdizadeh; Patel, Viral K.; Shahab, Shima

doi:10.1016/j.apenergy.2018.10.100

Title: Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process

Full Record
Other Related Research

Abstract

Ultrasonic vibrations, used to atomize liquids into a fine mist, are a promising solution for the future of efficient clothes drying technology. The world’s first ultrasonic dryer—demonstrated by researchers at Oak Ridge National Laboratory—successfully applies the scientific principles behind ultrasonic drying, and several working prototypes have been demonstrated. This technology is based on direct mechanical coupling between mesh piezoelectric transducers and wet fabric. During the atomization process, vertical oscillations of a contained liquid, called Faraday excitations, result in the formation of standing waves on the liquid surface. At increasing amplitudes and frequencies of oscillation, wave peaks become extended and form “necks” connecting small secondary droplets to the bulk liquid. When the oscillation reaches an acceleration threshold, the droplet momentum is sufficient to break the surface tension of the neck and enable the droplets to travel away from the liquid. In this work, we investigate the atomization process using an ultrasonic transducer as it pertains to moisture retained within a fabric. An experimentally validated electromechanical analytical-numerical model is proposed. This model bridges the vibrations of a piezoelectric mesh transducer to the critical acceleration needed for fabric drying to occur. Then, the drying rate model is developed, consisting of an initial nonlinearmore »« less

Authors:

Dupuis, Eric D. ^[1];

^[2];

^[2]; Shahab, Shima ^[1]

Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Tue Nov 06 00:00:00 EST 2018

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:: 1481701

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Applied Energy

Additional Journal Information:: Journal Volume: 235; Journal Issue: C; Journal ID: ISSN 0306-2619

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; Ultrasonic drying; Atomization; Piezoelectric transducer; Vibration analysis

Citation Formats


                    Dupuis, Eric D., Momen, Ayyoub Mehdizadeh, Patel, Viral K., and Shahab, Shima. Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process.  United States: N. p., 2018. 
Web.  doi:10.1016/j.apenergy.2018.10.100.

Copy to clipboard


                    Dupuis, Eric D., Momen, Ayyoub Mehdizadeh, Patel, Viral K., & Shahab, Shima. Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process.  United States.  https://doi.org/10.1016/j.apenergy.2018.10.100

Copy to clipboard


                    Dupuis, Eric D., Momen, Ayyoub Mehdizadeh, Patel, Viral K., and Shahab, Shima. Tue .  
"Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process".  United States.  https://doi.org/10.1016/j.apenergy.2018.10.100.  https://www.osti.gov/servlets/purl/1481701.

Copy to clipboard


                    
@article{osti_1481701,

  title        = {Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process},

  author       = {Dupuis, Eric D. and Momen, Ayyoub Mehdizadeh and Patel, Viral K. and Shahab, Shima},

  abstractNote = {Ultrasonic vibrations, used to atomize liquids into a fine mist, are a promising solution for the future of efficient clothes drying technology. The world’s first ultrasonic dryer—demonstrated by researchers at Oak Ridge National Laboratory—successfully applies the scientific principles behind ultrasonic drying, and several working prototypes have been demonstrated. This technology is based on direct mechanical coupling between mesh piezoelectric transducers and wet fabric. During the atomization process, vertical oscillations of a contained liquid, called Faraday excitations, result in the formation of standing waves on the liquid surface. At increasing amplitudes and frequencies of oscillation, wave peaks become extended and form “necks” connecting small secondary droplets to the bulk liquid. When the oscillation reaches an acceleration threshold, the droplet momentum is sufficient to break the surface tension of the neck and enable the droplets to travel away from the liquid. In this work, we investigate the atomization process using an ultrasonic transducer as it pertains to moisture retained within a fabric. An experimentally validated electromechanical analytical-numerical model is proposed. This model bridges the vibrations of a piezoelectric mesh transducer to the critical acceleration needed for fabric drying to occur. Then, the drying rate model is developed, consisting of an initial nonlinear region due to atomization, followed by a linear thermal evaporation region. The models developed identify the influence of key parameters on ultrasonic drying and will aid in improving atomizer design for efficient, timely fabric drying. This study is the first proposed model for the ultrasonic atomization of fabrics saturated with water, applicable to any type of transducer. The results present a non-dimensional equation for the ultrasonic dewatering of fabrics, dependent only on transducer acceleration and the surface area of the cloth. Furthermore, the development of this technology using the proposed physical models will allow for global reductions in electrical demand related to clothes drying.},

  doi          = {10.1016/j.apenergy.2018.10.100},

  journal      = {Applied Energy},

  number       = C,

  volume       = 235,

  place        = {United States},

  year         = {Tue Nov 06 00:00:00 EST 2018},

  month        = {Tue Nov 06 00:00:00 EST 2018}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1016/j.apenergy.2018.10.100

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 11 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Coupling of electroelastic dynamics and direct contact ultrasonic drying formulation for annular piezoelectric bimorph transducers

Journal Article Dupuis, Eric D. ; Momen, Ayyoub M. ; Patel, Viral K. ; ... - Smart Materials and Structures

A newly developed technique for drying clothes without thermal energy has been developed through the utilization of ultrasonic vibrations from piezoelectric transducers. The novel technique incorporates the actuation of a thin stainless steel disk in contact with wet fabric via annular piezoelectric rings, where water in the liquid form is atomized, transported through microchannels in the disk, and ejected as a mist. In such a system, resonance matching between the actuation portion of the transducer and the portion contacting fabric must be realized, with theoretical results from the developed electromechanical model showing a reduction in energy consumption by 50% whenmore »« less
Cited by 4
https://doi.org/10.1088/1361-665X/ab79b8

Full Text Available
Ultrasonic Piezoelectric Atomizers: Electromechanical Modeling and Performance Testing

Conference Dupuis, Eric D. ; Mehdizadeh Momen, Ayyoub ; Patel, Viral ; ...

Ultrasonic atomization of bulk liquids has received extensive attention in the past few decades due to the ability to produce controlled droplet sizes, a necessity for many industries such as spray coating and aerosol drug delivery. Despite the increase in attention, one novel application of this technology has been overlooked until recently, and that is the moisture removal capabilities of atomization. The first ever ultrasonic dryer, created by researchers at Oak Ridge National Lab in 2016, applies the mechanisms of atomization to mechanically remove moisture from clothing. The process utilizes the ultrasonic vibrations created by a piezoelectric transducer in directmore »« less
https://doi.org/10.1115/SMASIS2018-8262

Full Text Available
Physics of direct-contact ultrasonic cloth drying process

Journal Article Peng, Chang ; Ravi, Saitej ; Patel, Viral K. ; ... - Energy (Oxford)

Existing methods of drying fabrics involve energy-intensive thermal evaporation of moisture from clothes. Drying fabrics using high-frequency vibrations of piezoelectric transducers can substantially reduce drying time and energy consumption. In this method, vibrational energy generates instability on the liquid-air interface and mechanically ejects water from a wet fabric. For the first time, the physics of the ultrasonic fabric drying process in direct-contact mode is studied. The kinematic and thermal responses of water droplets and fabrics on piezoelectric crystal transducers and metal mesh–based transducers are studied. The results suggest that on piezoelectric crystal transducers, the response of a droplet subjected tomore »« less
Cited by 29
https://doi.org/10.1016/j.energy.2017.02.138

Full Text Available
Novel Experimental Study of Fabric Drying Using Direct-Contact Ultrasonic Vibration

Journal Article Patel, Viral K. ; Reed, Frederick Kyle ; Kisner, Roger A. ; ... - Journal of Thermal Science and Engineering Applications

Here, fabric drying is an energy-intensive process, which generally involves blowing hot dry air across tumbling wet fabric to facilitate evaporation and moisture removal. Most of the energy supplied is used to overcome the enthalpy of vaporization for water. Although this process tends to be inefficient, it is fairly simple and forms the basis for the majority of existing clothes dryer technology today. To address the relatively low efficiency, a new method of drying called “direct contact ultrasonic fabric drying” is proposed. The process involves using high-frequency vibration introduced by piezoelectric transducers, which are in contact with wet fabric. Themore »« less
Cited by 14
https://doi.org/10.1115/1.4041596

Full Text Available
Numerical investigation of the effect of ultrasound on paper drying

Journal Article ASAR, MUNEVVER ELIF ; NOORI, ZAHRA ; YAGOOBI, JAMAL - TAPPI Journal

The paper drying process is very energy inefficient. More than two-thirds of the total energy used in a paper machine is for drying paper. Novel drying technologies, such as ultrasound (US) drying, can be assessed numerically for developing next-generation drying technologies for the paper industry.This work numerically illustrates the impact on drying process energy efficiency of US transducers installed on a two-tiered dryer section of a paper machine. Piezoelectric transducers generate ultrasound waves, and liquid water mist can be ejected from the porous media. The drying rate of handsheet paper in the presence of direct-contact USis measured experimentally, and themore »« less
https://doi.org/10.32964/tj21.3.127

Similar Records