|BCC- Best Cost Concentration
Solar energy is plentiful, but diffuse. The concentration of
solar energy enables a wide array of applications,
including industrial steam, process heating, air
conditioning, sterling engines, concentrating photovoltaics,
Solar concentrating systems also offer the hope of being the
most cost-effective method of capturing and utilizing solar
energy, but the fact remains that traditional
combustion-based generation of thermal and electrical
energy is still considerably less expensive for the typical
One method of closing the cost gap between traditional and
solar power generation is though the use of film-based
reflective materials, as opposed to traditional glass mirrors.
The cost advantages of reflective films are considerable in
comparison to traditional mirrors using glass substrates
(thick or thin), and film production also leaves a significantly
lower carbon footprint. Point focus implementation offers
lower radiant thermal losses compared to line focus/
trough-based systems. .
A lightweight yet strong dish design enables a very low mass
for the tracking structure to move, and a weathervaning
stowage mode protects the dishes from high wind and hail
The ability to dynamically adjust focal length on the dishes
offers flexibility in implementation, and also provides the
ability to quickly return dishes to a safe unfocused condition
in the event that tracking control is lost.
A Better Focus Co. is committed to moving this technology
Click the following links for papers and presentations
detailing the design concept of A Better Focus technology.
(presented at the American Solar Energy Society ).
Reflective films are often cited as lacking in durability
compared to glass mirrors. While glass mirrors present the
hardest of outer surfaces to the elements, glass materials
have not been without problems of their own. Also, the cost
of melting sand and gypsum to make glass will escalate with
rising fuel costs. The carbon footprint left behind is
significant in any case.
New developments in reflective film have made significant
progress, and accelerated life testing at NREL estimates a
life of greater than 10 years.
2010 ASES presentation
Our 8' prototype utilizes reflective film from Reflectich Solar,
now part of SkyFuel, Inc..
Our second 8' diameter prototype has been constructed
and tested in the fall of 07. Concentration ratio stands at
350 suns, maximum temperature recorded is 922C at 987
The latest prototype is constructed with Reflectec film that
has proven the ability to survive outdoor conditions.
Long term weatherability testing have commenced, and will
continue indefinitely. A 1/4 scale model of a 4-dish tracking
frame structure has been completed, and tested.
Looking for Partners
We are looking for a user/partner to build a 20KW
Do you have a year-round need for hot water or low
Are you located in a region with good solar resource?
Do you have an interest in participating in the development
and testing of the next-generation of high-energy solar
Intellectual property of new developments will be shared.
Expressions of interest can be forwarded to Doug Simmers
|A Better Focus Co. is proud to announce the allowance of our first patent
for our VacuDish concentrating technology, U.S Patent # 7,374,301