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CPFilms:「green」 light for window films
Growing numbers of ESCOs (Energy Service Companies) and “green” designers are persuaded of the value of integrating solar control films into many of their energy reduction packages. Information and experience from projects around the globe, such as those depicted in this article by CPFilms, are making clear their cost-effectiveness, and field implementation is now an increasingly visible option for all decision-makers.

  • Steve DeBusk - Energy Solutions Manager CPFILMS, INC.
  • Joe Richard - Technical Marketing Engineer CPFILMS, INC.

ENERGY SERVICE COMPANIES SEE THE GREEN LIGHT

Leading the charge towards greener and more energy-efficient buildings is a group of companies known as Energy Service Companies, or ESCOs. Some of the world’s largest ESCOs are Johnson Controls, Honeywell and Siemens. Currently there are ESCO organizations in many parts of the world, including the United States (www.naesco.org), Canada, Mexico, Brazil, China, Asia, Australia, and of course, Europe, where energy-efficiency has been the mantra in industry, business, and society for many years.
Typically, ESCOs are able to achieve 20-40 per cent reductions in facility energy use for their customers. ESCOs normally operate on the principle of minimal cash outlays on the part of their customers by sharing a portion of savings generated from projects they develop. This type of arrangement is an especially attractive scenario for a facility, since in addition to minimal capital outlay, energy savings are guaranteed. So, in the unlikely event that energy savings promised do not materialize, the ESCO writes a check to the facility to cover the savings shortfall. This type of transaction is also referred to as “Performance Contracting,” since the ESCO is only paid if the programme performs as promised.
Energy-saving measures used by ESCOs often include high-efficiency lighting, motors, and heating/air-conditioning equipment, as well as sophisticated energy metering and centralized energy-management systems. Reducing summer solar heat gain and winter heat loss through windows by using LLumar window films is also an important part of an effective building energy-savings and green building strategy employed by many ESCOs.
LLumar, manufacturing and distributing its products globally, has been actively involved in ESCO and green-building projects over the past several years, due to the exceptional energy-efficiency of its solarcontrol and insulating window films. The ability of these products to improve building energy efficiency, design aesthetics, occupant comfort and outward views hits the mark of key scoring components for “green building” specification. Fresno University, Peters Business Building - annual savings with window film USD 15,000, 2.4 years payback Fresno University, Education Building - utilized exterior reflective window film, USD 28,000 annual savings, 3.2 years payback

CASE STUDY: FRESNO STATE UNIVERSITY

One ESCO project involving LLumar window film took place in 2005 at Fresno State University, California, the United States. Fresno State is one of the 23 campuses of the California State University, one of the largest systems of higher education in the world. Fresno State retained NORESCO, one of the largest ESCOs in the United States, to design and deliver a cost-saving strategy that would restrain ever-rising energy costs. NORESCO turned to LLumar for a solution, and through its dealer network,LLumar provided a building-envelope-improvement solution.
Following an energy savings evaluation based on US Department of Energy standards and in partnership with NORESCO and University engineers, the plan was to install 9,300 square metres (100,000 square feet) of LLumar low-emissivity (low-E) window film on 14 campus buildings. This LLumar film was able to reject nearly 70 per cent of the solar energy impinging campus windows, helping to reduce the need to operate costly airconditioning equipment.
The low-E film also improved the window insulating properties by 34 per cent, further reducing heat gain in the summer and heat loss in the winter. The energy savings yielded by window film installation at Fresno State amounted to 117 USD 135,000 annually, or six per cent of campus energy usage. The energy savings provided by the LLumar film will help Fresno State recoup their investment in three years.
As with almost all window film applications, the interior comfort for occupants has been greatly improved and the harsh glare of the sun reduced by over 60 per cent. Again, it is important to note that sustainable building rating systems typically provide points for improvements that enhance energy efficiency and occupant comfort and well-being, making window film an ideal green building technology.

CASE STUDY: FRESNO STATE UNIVERSITY

One ESCO project involving LLumar window film took place in 2005 at Fresno State University, California, the United States. Fresno State is one of the 23 campuses of the California State University, one of the largest systems of higher education in the world. Fresno State retained NORESCO, one of the largest ESCOs in the United States, to design and deliver a cost-saving strategy that would restrain ever-rising energy costs. NORESCO turned to LLumar for a solution, and through its dealer network,LLumar provided a building-envelope-improvement solution.
Following an energy savings evaluation based on US Department of Energy standards and in partnership with NORESCO and University engineers, the plan was to install 9,300 square metres (100,000 square feet) of LLumar low-emissivity (low-E) window film on 14 campus buildings. This LLumar film was able to reject nearly 70 per cent of the solar energy impinging campus windows, helping to reduce the need to operate costly airconditioning equipment.
The low-E film also improved the window insulating properties by 34 per cent, further reducing heat gain in the summer and heat loss in the winter. The energy savings yielded by window film installation at Fresno State amounted to 117 USD 135,000 annually, or six per cent of campus energy usage. The energy savings provided by the LLumar film will help Fresno State recoup their investment in three years.
As with almost all window film applications, the interior comfort for occupants has been greatly improved and the harsh glare of the sun reduced by over 60 per cent. Again, it is important to note that sustainable building rating systems typically provide points for improvements that enhance energy efficiency and occupant comfort and well-being, making window film an ideal green building technology.

CASE STUDY: TEMPLE COLLEGE

Another green project involving LLumar window film took place at Temple College, Texas, the United States. The College faced a serious budget crisis as energy expenses were rapidly escalating out of control. Temple College retained the services of Johnson Control, Inc. (JCI), who determined that numerous windows on campus were contributing substantially to the campus’ overall energy inefficiency. JCI determined that LLumar solar-control window films should be an important part of an effective energy-savings strategy for the college. It was determined by LLumar, and verified by JCI, that the Temple window film project, 2,800 square metres (30,000 square feet) in all,would produce annual energy savings of USD 34,000, with a return on investment in 3.6 years. The return on investment of individual buildings ranged from 1.3 to 8.6 years. The buildings with longer paybacks were still included in the project in order to improve occupant comfort in specific areas, and because Temple wanted the campus’ buildings to have a sleek, contemporary appearance. The result of installing LLumar film to the campus’ buildings was a summer peak demand savings of nearly 200 kilowatts and annual savings of over 400,000 kilowatt hours.

LLUMARR ENERGY CONTROL FILMS

LLumarR energy-control window films are manufactured by CPFilms Inc. in Virginia, the United States, and the United Kingdom. CPFilms is the largest producer of energy-control window films and film components in the world, with distinction in the areas of research and technology, manufacturing excellence, global distribution and dedicated customer service. CPFilms is an ISO 9001:2000 certified company.

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