Posts Tagged ‘lighting’

29 August

Hybrid Solar Lighting


Dear Friends, Visitors/Viewers/Readers,

(Please click on red links below)


Please show your support for Renewable Energy by visiting-signing-sharing Renewable-FIT For Sunshine State!


Did you know that about 13% of all residential electricity consumption in USA comes from lighting? So, in this post, I want to shed some light on a rather new technology in decreasing power consumption, Hybrid Solar Lighting, which combines the use of solar with artificial light, allowing  interior illumination by channeling sunlight through fiber optic cable bundles to provide solar light into rooms without windows or skylights, and by supplementing this natural light with artificial LED light as required/needed. The bundles are led from exterior or rooftop optical light collectors through small openings or cable ducts and carry the light to where it is needed.

This solar lighting system simply captures light from the sun and conducts it towards a room using optical fibers. One may use rooftop collectors or large mirrored dishes to track the sun. The collectors adjust to aim the sunlight onto 127 optical fibers which are conducted into a single chord. The optical fibers are flexible and can be connected into hybrid light fixtures that are joined to diffusing rods that disperse the light. A single collector can power up to eight hybrid light fixtures covering 1,000 square feet (93 m2). The hybrid lights also use artificial lighting which is mixed with the natural sunlight beamed in down the fiber optic chord. Photosensors focus on how much light needs to be generated to add to the natural light in order to keep a room illuminated at a constant brightness. When the sun is blocked by clouds around five percent of its sunlight requirement will need to be added. Hybrid solar lighting systems should be used in rooms with direct roof access.

Now, let’s take a look at a workshop by University of MD in how to utilize hybrid solar lighting for their Glenn L. Martin Hall to minimize power demand, reduce carbon emission, and move  closer to the sustainable future, video below (the best part is that the pay back period is only 3 years, shown at the end of this video. Where can you find an investment with that kind of pay back?! Fantastic!):

~have a bright and sunny day~


gathered, written, and posted by sunisthefuture-Susan Sun Nunamaker

Any of your comments will be welcomed below or via (please note if you do not want your email to be shared)


HTML adl

28 September

Solar Decathlon 2011-Winners of Architecture Contest


Dear Readers,

If you are in favor of renewable,  clean, or solar energy, please sign this petition for FIT/CLEAN Program, accessible at Thank you very much.


Sorry about delaying reporting the Solar Decathlon 2011.  I was first under the weather, then because some of you have written me wanting better/more clear explanations of the Feed-In-Tariff/CLEAN program, I started to look around for software and other ways of presenting this topic. The end result may be viewed above, in this new clip.  Let me know if it would do a better job in convincing people to sign the petition.  Your comments and suggestions will be appreciated.

Now, let’s get back to Solar Decathlon of 2011.  On September 28, 2011, the University of Maryland took first place in the highly competitive Architecture Contest (remember there are 10 contests) of the U.S. Department of Energy Solar Decathlon 2011,

University of Maryland students celebrate after being presented with first place in the U.S. Department of Energy Solar Decathlon 2011 Architecture Contest

visitors waiting in line to see Maryland's winning design, Watershed above

Scoring 96 out of a possible 100.  Architectural juror Michelle Kaufmann who has been called “the Henry Ford of green homes” by the Sierra Club and is a former Associate with the office of Frank O. Gehry, said, “The Maryland achieves and elegant mix of inspiration, function, and simplicity.  It takes our current greatest challenges in the built environment-energy and water-and transforms them into opportunities for spatial beauty and poetry while maintaining livability in every square inch.  This is what the Department of Energy Solar Decathlon is all about.”


Liquid desiccant waterfall uses lithium chloride to dehumidify the University of Maryland's Watershed


New Zealand claimed second place with 95 points.

visitors waiting in line to see New Zealand's Victoria University of Wellington's First Light design

New Zealand’s First Light’s living/dining area

And Appalachian State University took third place with 94 points.

Appalachian State University's The Solar Homestead design: bifacial PV panels, U.S. Energy Secretary Steven Chu speaks with Jeffrey Tiller )Chair of Technology & Environmental Design Dept.) and student David Lee.

For the Architecture Contest, the jury evaluated the houses on these criteria: architectural elements (including the scale and proportion of room and facade features, indoor/outdoor connections, composition, and linking of various house elements; holistic design (comfort for occupants and compatibility with the surrounding element);lighting (integration and energy efficiency of electrical and natural light);inspiration (design that inspires and delights Solar Decathlon visitors);documentation (including drawings, project manual, and an audiovisual architecture presentation accurately reflecting the project on the competition site).  The U.S. Department of Energy Solar Decathlon 2011 is an award-winning program that challenges collegiate students from around the world to design, build, and operate solar-powered houses that are affordable, highly energy efficient, attractive, and easy to live in.  The Solar Decathlon has been providing participating students with hands-on experience and unique training that prepares them to enter clean energy workforce, supporting the President Obama’s Administration’s goal of transitioning to a clean energy economy while saving families and business money.

More video clips on University of Maryland’s Watershed design, New Zealand’s First Light design, and Appalachian State University’s Solar Homesteadwill be seen/posted later.


written & posted by sunisthefuture-Susan Sun Nunamaker,

Any comments and suggestions are welcomed at

Please also get into the habit of checking at these sites below for more on solar energy topics:

HTML adl



Copyright © 2011-2018 · Susan Sun Nunamaker All Rights Reserved ·