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Super Efficient Dryer Initiative
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Technical Session: Lab and Field
Research, Test Procedure, and ENERGY
STAR
14 November 2013
Washington, DC
and the California IOUs
Session Agenda & Objectives
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• Provide a high-level overview of past, current, and
discuss possible future research activity focusing on
clothes dryers;
• Highlight key findings from recent research activity;
• Identify important elements for assessing clothes
dryer energy performance;
• Present an overview of recent testing and research
conduced by the US DOE.
Knowing What We Don’t Know
• Unlike other residential appliances, there is a lot of
basic information about clothes dryers that we do
not know: o How do clothes dryers perform in real world drying conditions?
o How do consumers use dryers?
o What is the range of energy usage characteristics of products on
the market?
We have tried to address some of these questions
through the following research activities
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Intro to Dryer Research
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Since 2011, several organizations have
conducted clothes dryer research
Their efforts have resulted in: o Better understanding of potential energy savings, including savings from
new emerging technology (ET)
o Increased knowledge of dryer energy consumption, as well as consumer
usage patterns
SEDI’s Research Working Group was created to: o Target the most important areas of investigation
o Support the comparability of research results
o Exchange best practices and expertise
o Provide a forum for the sharing of research results
Overview of Past Research Activities
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Baselining Dryer Energy
Consumption
Assessing the Energy Savings
Potential of Dryers
Assessing the Energy Savings Potential of ET
Field Research
NEEA Field Study &
FSEC Field Research
Laboratory Testing
NEEA/CA IOU Testing
NRDC Study CLASP Study
Dryer Modification
CA IOU Testing
Baselining Dryer Energy Consumption
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• NEEA conducted a field study in the Northwest to
collect data on dryer energy consumption and
consumer usage patterns
• NEEA and CA IOUs, in collaboration with Ecova,
tested several dryers with a modified test procedure
that more closely aligned with the type of drying
conditions measured in the field
• FSEC is monitoring the energy consumption of
clothes dryers and HVAC systems in several Florida
homes
Assessing the Energy Savings Potential
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• CA IOUs, in collaboration with Ecova, modified two
conventional dryers to assess the impact on energy
consumption. Modifications included: o Adding insulation
o Adding a heat exchanger
o Re-routing the air flow
• NRDC, in collaboration with Ecova, assessed the
impact of test load composition, fuel type, and
automatic termination on the energy consumption
of dryers
Assessing the Energy Savings Potential of ET
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• CLASP, in collaboration with Ecova, compared the
energy consumption and performance of North
American conventional dryers and European heat
pump dryers
• Two additional (best in class) HP dryers are in the
Ecova test lab awaiting staff and budget, this testing
will be funded by NEEA
Planned Future Research
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• SEDI will develop a research protocol for field
testing (based on NEEA field test protocol)
• FSEC plans to conduct deep energy retrofits on
select homes, including the installation of 2013 ETA
winning dryer
• SEDI sponsors will conduct lab testing of current
dryers to DOE’s appendix D2 protocol to utility
savings establish baseline (necessary because D2 is
voluntary)
• SEDI sponsors will conduct field testing of the first
ENERGY STAR qualified products to determine real
world behaviors and savings
Contacts
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My Ton
CLASP
Christopher Dymond
NEEA
Chris Calwell
Ecova
