DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Efficiency Limits of Evaporative Fabric Drying Methods

Journal Article · · Drying Technology

Cloth drying is a major consumer of energy, and most drying is conducted by evaporative methods. The evaporative drying energy efficiency limit is commonly assumed to be 100%: one unit of latent heat removed per unit of energy expended. However, this ignores the “free drying” available from unsaturated ambient air and the possible role of heat pumping. We demonstrate that efficiency limits for evaporative drying are fundamentally related to both drying rate and ambient psychrometric conditions. A relationship among efficiency, drying rate, and ambient conditions is quantified for several evaporative drying technologies, and a comparison among evaporative technologies is provided. In addition, a comparison is provided between efficiency limits and state of the art device performance. This research will help guide future research in the most promising directions.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1783042
Journal Information:
Drying Technology, Vol. 39, Issue 1; ISSN 0737-3937
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English

References (30)

Modeling and design of a high efficiency hybrid heat pump clothes dryer journal September 2017
An experimental study on the performance of a condensing tumbler dryer with an air-to-air heat exchanger journal April 2013
Microwave Drying of Food and Agricultural Materials: Basics and Heat and Mass Transfer Modeling journal January 2012
Pre-drying Textile Fabrics with Infrared Radiation journal March 1994
Electroelastic investigation of drying rate in the direct contact ultrasonic fabric dewatering process journal February 2019
Development of a microwave clothes dryer journal January 1996
Performance Study of a Closed-Type Heat Pump Tumble Dryer Using a Simulation Model and an Experimental Set-Up journal May 2014
Novel Experimental Study of Fabric Drying Using Direct-Contact Ultrasonic Vibration journal November 2018
A novel design of a household clothes tumbler dryer journal March 2010
Thermal analysis of a new concept in a household clothes tumbler dryer journal May 2010
Exergoeconomic Analysis of a Heat Pump Tumbler Dryer journal January 2014
Development of Packaging and Modular Control of Thermoelectric Clothes Dryer, With Performance Evaluation
  • Patel, Viral K.; Gluesenkamp, Kyle R.
  • ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2017 Conference on Information Storage and Processing Systems https://doi.org/10.1115/IPACK2017-74243
conference October 2017
Microwave Drying of Clothes journal January 1991
Thermodynamic analysis and experimental investigation of a CO2 household heat pump dryer journal June 2011
Numerical Investigation of the Effect of Using CO 2 as the Refrigerant in a Heat Pump Tumble Dryer System journal September 2014
Heat pump assisted drying of agricultural produce—an overview journal April 2011
Potential energy savings made by using a specific control strategy when tumble drying small loads journal February 2013
Modeling and Performance Investigation of a Closed-Type Thermoelectric Clothes Dryer journal September 2008
Experimental evaluation and thermodynamic system modeling of thermoelectric heat pump clothes dryer journal May 2018
Drying performance analysis of a condensing tumbler clothes dryer with a unique water cooled heat exchanger journal February 2017
Performance Improvement of a Domestic Condenser Tumble Clothes Dryer by Using a Heat Pipe Heat Exchanger journal May 2019
An energy-efficient method for direct-contact ultrasonic cloth drying journal November 2017
Development of a Novel Two-Stage Heat Pump Clothes Dryer conference March 2015
Transcritical CO 2 Heat Pump Dryer: Part 1. Mathematical Model and Simulation journal December 2006
An efficient correlation for heat and mass transfer effectiveness in tumble-type clothes dryer drums journal April 2019
Microwave drying machine for textile materials conference January 2005
Condensing dryers with enhanced dehumidification using surface tension elements journal March 2009
Ultrasonic Piezoelectric Atomizers: Electromechanical Modeling and Performance Testing
  • Dupuis, Eric D.; Momen, Ayyoub M.; Patel, Viral K.
  • ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation, and Control of Adaptive Systems; Integrated System Design and Implementation https://doi.org/10.1115/SMASIS2018-8262
conference November 2018
Physics of direct-contact ultrasonic cloth drying process journal April 2017
The improvement on efficiency and drying performance of a domestic venting tumble clothes dryer by using a heat pipe heat recovery heat exchanger journal May 2018