The gamecock. (Columbia, S.C.) 1908-2006, October 23, 1975, Page Page 4, Image 4
Solar energ
by 1979
By JOHN SHARKEY
Gamecock Staff Writer
A contract that provides financial support for further
research into a process used in solar energy systems has
been awarded to USC's College of Engineering.
Dr. R. B. Hilborn, program manger for the research
project, said the research program will be evaluating the
web method of making sheet silicon. Silicon is the most
widely used material for converting sunlight to voltage
power. "The goal of our particular project is to find out if it
would be economically feasible to use this method for
making solar cells, as well as to see if it is feasible to use
this process to make the quantity needed to produce this
power," Hilborn said.
The federal government, through the Energy Research
and Development Agency (ERDA), awarded the prime
contract for latge-scale silicon research to Jet Propulsion
Laboratories (JPL), of Pasadena, Calif. JPL has a number
of programs within that project. JPL awarded nine con
tracts for sheet silicon research. USC was the only
university awarded one of the contracts. USC's contract,
which givesq the research project $265,000, began Oct. 1.
There are other materials more efficient than silicon, but
becuase silicon is so abundant most research in the field
utilizes silicon, according to Hilborn. Silicon is the second
most abundant element in the world and about 25 per cent of
the earth's crust is made up of silicon. Hilborn explained
that when the sulnlight hits the sheet silicon in a
photovoltac cell, voltage will develop across it and that
voltage provides the source of electric current.
The web process involves melting pure polycrystalline
silicon in a furnace. A seed crystal is placed on a rod or
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"button" and the silicon solidifies on the button to form a
strip. The process gets its name from the way the silicon
fills in between two strips of dendrite as it is pulled from the
furnace.
Dr. John W. Faust Jr. program investigator for the
project, is a co-inventor of the web process. Faust and
Hilborn built up the laboratories in the College of
Engineering so that they are now one of the most complete
laboratories in the country for crystal growth. The
facilities, which will be used, in the future for contracted
research, helped the college secure the contract, according
to Faust.
The web furnace of the college has played a greater role
in securing the contract, Faust said. The funace is designed
for growing web material. Dow Corning had licensed the
patent for the process from Westinghouse. After Faust had
been at USC for about a year Dow'stqpped their research
and production of the process. They had to get rid of the
furnaceso they contacted Faust and gave the furnace and
about $20,000 worth of silicon to USC, largely because of
Faust's expertise in the field.
Westinghouse, who was making solar cells for NASA,
stopped their production of the cells made from silicon in
1968. The cells have been used in virtually all satellite and
manned rockets to supply electric power to the crafts.
Westinghouse was not selling enough of the cells and the
business became a very low-profit venture. Westinghouse
destroyed all of their funaces and so the f!-naceUSC has is
the only one of its kind in the world, according to Faust.
Both Faust and Hilborn are optimistic about their
research. "We would like a significant factor in solar
energy research," Fautst said. Hilborn said, "I think of
the methods I know for producing sheet silcon, this one will
prove to be the most feasible." The project must be com
pleted and a final report sent to JPL in 18 months. Hilborn
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said if the results of the repserch-ao postivie, "We may
be eligible for additional contracts."
Fanst said the College of Engineering would like to ex
pand their research in the field of solar energy. He said
that they would like to train people in the fi*l.d of solar
energy and turn out graduates with the required training in
the web process.
Another professor at the College of Engineering is doing
significant work in the area of solar energy research. Dr.
Laurence N. Connor Jr. is trying to promote solar energy
usage among home owners and builders. The basic system
he is using for instruction at the college consists of a
collector, made of copper or aluminum, tubes that circulate
air or water through the building and a storage tank.
The collector surface absorbs the heat from the sun and
then heats water or air circulates it through the home in
tubes. Connor said the system is not very economical now
because industries have not mass produced the components
and the installation cost is very high. But Connor said in the
long run it is a very inexpensive system and by 1985 it will
be very competitive cost-.wise with other systems now in
use.
Connor said that ERDA is coordinating a project
designed to demonstrate that by 1977 solar heating in
residential and commercial building s will be practical, and
by 1979 a solar cooling system will also be practical. ERDA
will provide the difference in cost between the normal
system and solaw system to 200 commercial and 1,000
residential buildings who will use the systems in the
program.
According to Connor researchers in the area are trying to
standardize the components of the system and provide a
means for evaluating the system. Connor has spoken to
some organizations to promote usage of the sytem. He will
be conducting a short course on the subject for building and
heating contracting in November.
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