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Four Views on Ideal Controls
Lighting Futures asked,
Is there an ideal lighting system for private offices today?
Is it different from the past and what does the future hold
in store? What is the largest obstacle to seeing the ideal
systems installed?
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Wayne
Morrow, facility electrical engineer for the National
Center for Atmospheric Research:
There is an ideal lighting system - it's just
different for every user. The ideal system is dependent
upon the task and the person. It allows the user to
adjust the lighting to their physiological and
psychological needs - whatever they may be.
In the past, it was one size fits all. There was one
level of light, that was all you got, and you were lucky
to get anything. Lighting was designed from statistics
for the statistical user. But none of our users have 2.5
kids. They're all individuals, and the ideal system
recognizes that and allows for variations.
The ideal system in the future will allow more remote
diagnostics and dispatch maintenance.
The trends are already going that way, and they will
continue. Facilities will be managed from remote
locations, and problems can be identified without having
personnel on site. Then you send a person out who already
knows what the problem is, saving two or three trips. And
the person who is sent can be a specialist for that
particular problem. It's much more efficient. Without
remote diagnosis, it's like walking around with a
blindfold.
The biggest obstacle is no longer a technical issue,
it's perception. The products aren't yet mainstream, so
there is a perceived risk and a limited understanding of
the benefits for building managers in general. Education
is the best way to overcome that. The big red herring in
lighting systems is energy. Lighting systems need to be
principally evaluated on their ergonomic benefits.
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Maria
Vargas, co-director, Energy Star and Green Lights
Partnership:
The ideal system accommodates every occupant: it
understands the lighting needs of the occupant, it allows
the occupant to have control, and it's energy efficient.
With today's technology, the office should have T8 lamps,
electronic ballasts, a task light (if needed), and some
control involving occupancy sensors.
There are new technologies emerging that will make
that office even more comfortable. They include dimmable
ballasts and manual dimming. People and organizations are
looking for ways not only to cut costs but also to
improve productivity. Right now, occupancy sensors and
dimming are frequently cost effective and provide
productivity gains. The trouble we've had to date is
making the decision simple for end users. One of the
biggest obstacles to increased use of lighting controls
is a lack of awareness of what a good lighting upgrade
can do for an organization. Decision makers are not aware
of the opportunities, and they get mixed reports from
industry. The industry has to be much more sophisticated
and unified in how they sell these systems, and to make
the process easy for people to make decisions. The
decision makers need to know the economics and the other
benefits of installing controls, but the economic
arguments can get you only part of the way. The focus has
to be on the end user. There has to be a demonstration of
ancillary benefits that bolster the economics. The
question is "can you actually convince decision makers to
buy" and the convincing argument is going to be
productivity - worker happiness and satisfaction with
their environment is included in that.
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Dave
Peterson, manager, GE Total Lighting Controls and
chairman of the National Electrical Manufacturers
Association (NEMA) Lighting Controls Council:
The ideal system today is on-off scheduling in
open spaces and occupancy sensors in private offices,
conference rooms, and rest rooms. This is driven by the
economic argument that building owners and facilities
managers accept today.
Tomorrow's ideal system will involve manual controls,
but that won't happen until occupants' needs take
precedence over a straight energy cost argument. I can't
see a bunch of occupants jumping up and down and
demanding a dimmer, but putting one into a space will be
a 'plus' to the space. It will be perceived as a premium
space, and once it's been used, it will never be removed.
It's the occupant preference, not an energy payback,
which will drive the introduction of tomorrow's ideal
system.
From a technological standpoint, the major obstacle to
overcome is the integration of these different components
into standardized packages - to create systems which plug
and play. It's an implementation problem. The technology
exists today in each component, but not for creating
integrated systems from those components.
But more important than that, there is no clear
compelling and substantiated reason for the building
owner to buy. There are some early adopters who have
started using these systems, but there is no slam dunk
argument that convinces owners who are still primarily
concerned with energy savings. That doesn't mean that the
reason isn't there, but you can't point to one occupant
benefit and have owners all agree, 'I'll never put in a
system that doesn't do that.' You can get them to agree
that they should install energy-based lighting controls,
but they wouldn't understand why it's important to allow
individuals to dim their lights and control their own
environments. They have to put occupant satisfaction over
energy savings and first costs.
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Jerry Mix,
president of The Watt Stopper, a leading manufacturer of
lighting controls:
The ideal system involves an occupancy sensor on
the desktop that enables and disables lighting and other
peripheral products to the preference of the user. It's
all set up for the person - it's about personal control.
We know (occupancy) sensors work. They are the most
efficient energy-saving technology out there, but you
want to give control of the space to the person using the
space. By integrating a desktop sensor with dimming
ballasts and building systems, you have a system that
allows the user to choose the light level and select
different scenes.
You want a system that's invisible to the occupant. It
should just work, and it's only there when the occupant
wants to make a change, otherwise it's basically
invisible. With the desktop sensor, there are no more
false-offs. It can't miss a person when the sensor is
right at the desk. And from the desk, a sensor can turn
off peripherals as well, like monitors and task
lights.
The future: More and more people will be looking at
the idea of improving worker productivity by giving the
person control of light levels and lighting. The future
is in the integration of the technologies and
communicating with building systems: Active IR, scene
control presets, HVAC control. The technology to do all
of it is here today.The biggest obstacle is education,
without a doubt. People have to be aware that there are
more sophisticated systems. There is a tendency to
install systems that have the lowest first cost and still
meet standards or codes. People have to be educated that
systems are available which provide benefits beyond the
lowest cost products. Obviously they cost more, but they
have benefits beyond saving energy. Once people
understand the additional benefits, people will install
better systems.
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