skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling and design of a high efficiency hybrid heat pump clothes dryer

Abstract

Computational modeling is used to design a hybrid heat pump clothes dryer capable of saving 50% of the energy used by residential clothes dryers with comparable drying times. The model represents the various stages of a drying cycle from warm-up through constant drying rate and falling drying rate phases and finishing with a cooldown phase. The model is fit to data acquired from a U.S. commercial standard vented electric dryer, and when a hybrid heat pump system is added, the energy factor increases from 3.0 lbs/kWh to 5.7-6.0 lbs/kWh, depending on the increase in blower motor power. The hybrid heat pump system is designed from off-the-shelf components and includes a recuperative heat exchanger, an electric element, and an R-134a vapor compression heat pump. Parametric studies of element power and heating element use show a trade-off between energy savings and cycle time. Results show a step-change in energy savings from heat pump dryers currently marketed in the U.S. based on performance represented by Enery Star from standardized DOE testing.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1368123
Report Number(s):
PNNL-SA-123349
Journal ID: ISSN 1359-4311; 400480000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Thermal Engineering; Journal Volume: 124; Journal Issue: C
Country of Publication:
United States
Language:
English

Citation Formats

TeGrotenhuis, Ward, Butterfield, Andrew, Caldwell, Dustin, Crook, Alexander, and Winkelman, Austin. Modeling and design of a high efficiency hybrid heat pump clothes dryer. United States: N. p., 2017. Web. doi:10.1016/j.applthermaleng.2017.05.048.
TeGrotenhuis, Ward, Butterfield, Andrew, Caldwell, Dustin, Crook, Alexander, & Winkelman, Austin. Modeling and design of a high efficiency hybrid heat pump clothes dryer. United States. doi:10.1016/j.applthermaleng.2017.05.048.
TeGrotenhuis, Ward, Butterfield, Andrew, Caldwell, Dustin, Crook, Alexander, and Winkelman, Austin. Fri . "Modeling and design of a high efficiency hybrid heat pump clothes dryer". United States. doi:10.1016/j.applthermaleng.2017.05.048.
@article{osti_1368123,
title = {Modeling and design of a high efficiency hybrid heat pump clothes dryer},
author = {TeGrotenhuis, Ward and Butterfield, Andrew and Caldwell, Dustin and Crook, Alexander and Winkelman, Austin},
abstractNote = {Computational modeling is used to design a hybrid heat pump clothes dryer capable of saving 50% of the energy used by residential clothes dryers with comparable drying times. The model represents the various stages of a drying cycle from warm-up through constant drying rate and falling drying rate phases and finishing with a cooldown phase. The model is fit to data acquired from a U.S. commercial standard vented electric dryer, and when a hybrid heat pump system is added, the energy factor increases from 3.0 lbs/kWh to 5.7-6.0 lbs/kWh, depending on the increase in blower motor power. The hybrid heat pump system is designed from off-the-shelf components and includes a recuperative heat exchanger, an electric element, and an R-134a vapor compression heat pump. Parametric studies of element power and heating element use show a trade-off between energy savings and cycle time. Results show a step-change in energy savings from heat pump dryers currently marketed in the U.S. based on performance represented by Enery Star from standardized DOE testing.},
doi = {10.1016/j.applthermaleng.2017.05.048},
journal = {Applied Thermal Engineering},
number = C,
volume = 124,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}