| ACHIEVABLE
OFFICE DAYLIGHT SAVINGS
PROJECT GOALS
The goal of
this project is to create an
updated, complete and detailed
understanding of the ways in which
daylighting can be implemented in
California office buildings. This
knowledge is intended to be used
to facilitate and justify a
utility retrofit program to
achieve demand savings and energy
savings from daylight in existing
office buildings, and to inform
the next round of Title 24
changes.
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PROJECT OBJECTIVE
The
objectives of this project are to
assess the size and potential
energy savings of the office
daylighting retrofit market, and
to identify what improvements to
office buildings are likely to
create cost-effective savings. The
project will develop
implementation tools to assess
individual sites for their energy
savings potential using daylight,
and will communicate this new
knowledge to key decision makers
including program designers,
controls manufacturers and
Commission staff.
This
project will contribute to PIER’s
objectives by improving the
reliability of demand savings from
daylighting, thereby improving the
reliability of the overall
electric system, reducing the cost
of electricity and reducing
environmental impacts. It will
support the California economy
because many of the major lighting
controls manufacturers are based
in California and will be included
on the Project Advisory Committee
so they have a first-hand
understanding of the new knowledge
created. This project also fulfils
PIER’s goal of advancing
technologies in a way that is not
accomplished by regulated markets
alone, because in the case of
daylighting this advancement
requires research on a scale too
large to be undertaken by small
manufacturing companies.
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PROJECT
TEAM
This
project is funded by the
California Energy Commission PIER
Program. Principal Investigator
for this project is Lisa Heschong,
of the Heschong Mahone Group.
During the project we will
subcontract with Itron to bring in
their extensive experience of
developing and analyzing the CEUS
(California Commercial End-Use
Survey) database. The Project
Advisory Committee (PAC) will also
provide input throughout the
project, to ensure that we take
advantage of as many opportunities
as possible.
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PROJECT
TASKS
Statewide
Impact of Photocontrols
The
objective of this task is to
create a statistically valid
statewide analysis of the lighting
energy savings (and the associated
secondary savings such as for air
conditioning) that would be
achieved by the following
measures:
-
Implementing
a daylighting retrofit program
that might include
photocontrols.
-
Requiring
effective photocontrol systems
in offices under Title 24.
-
Incorporating
daylighting and photocontrols
in demand response programs.
This
analysis will indicate which
office building types and which
building characteristics offer the
most cost-effective savings, and
will quantify these savings and
their associated costs.
We plan to
analyze the database from HMG’s
Sidelighting Photocontrols Field
Study and databases of office
building characteristics such as
NRNC and CEUS to quantify the
impact of key variables on
photocontrol savings. We will then
calculate energy impact of
installing photocontrols in
existing and new-construction
California office buildings.
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Impact
of Daylighting and Controls
Improvements
The
objective of this task is to
produce a robust calculation of
the energy savings that would
result from improved daylighting
in retrofit and new construction
applications. Note that the
previous task assesses the
magnitude of savings that would be
achieved by applying typical
photocontrols in buildings
statewide, this task looks at the
effect of improving the
characteristics of the buildings
to maximize savings. “Improved
daylighting” will includes
features such as improved windows,
exterior and interior shading and
glare control devices, higher
window head heights, improved
interior lay-out, bidirectional
daylighting, lower partitions and
smaller electric lighting
circuits.
We
plan to calculate the additional
energy impact from daylighting
improvements and report on the
results.
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Create
Daylight Assessment Tool
The
objective of this task is to
develop an on-site daylight
assessment tool and protocols that
can be used by utility program
staff or contractors to identify
office spaces that are good
candidates for photocontrol
retrofits, to evaluate what type
of electric lighting controls that
would be most successful, and to
evaluate what specific daylighting
improvements would lead to the
greatest occupant satisfaction and
thus additional potential savings
in that space. The tool and
protocols will be intended to
maximize program
cost-effectiveness by avoiding
expenditure on systems that are
unlikely to work, and by
identifying inexpensive
improvements that will increase
savings.
We plan to
develop the daylight assessment
tool, protocols for its use and
test the tool through a round of
trials in real buildings.
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Project-level
Market Connections Activities
The
objective of this task is to
ensure that key decision makers
are aware of the findings of the
study, and of the daylight
assessment tool. Their awareness
should include knowledge of
important findings, an awareness
of the capabilities of the tool,
and an understanding of the
methodology and implications of
the study. The key decision makers
include utility and Commission
staff, and lighting controls
manufacturers. Apart from
participating in the program level
market connection activities, the
project team will conduct
face-to-face meetings with key
decision makers and generate a
report on code implications of the
project findings.
We plan to
present findings at various
face-to-face meeting, report on
code implications of our findings,
and participate in program level
market connection activities.
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Project-level
Technology Transfer Activities
The
objective of this task is to make
the project’s knowledge gained,
experimental results and lessons
learned available to key
decision-makers, the public and
other intended audiences, as part
of the program-wide technology
transfer plan.
We plan to develop a technology
transfer plan and participate in
the preparation and implementation
of the Technology Transfer Plan
developed in the Program-wide
Market Connections Element of this
Program.
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