| High temperature
fuel cells address energy, environmental and societal needs.
Stakeholders from academia, government
and industry met at the first annual Solid Oxide Fuel Cells Canada (SOFC
Canada) Conference last weekend in Sherbrooke , Quebec. SOFC Canada brings
together key fuel cell stakeholders from across Canada, including industry
organizations, government laboratories, universities, industry, related
technology companies, fuel suppliers and transporters, and end user organisations
to develop the full platform required to make solid oxide fuel cells a
commercial success. SOFC Canada developed its Strategic Technical
Plan at the Sherbrooke conference and agreed on near-term priorities and
key integrated activities. The draft plan will be circulated to members
by the end of October and will be available externally in November.
The Clean Air Act, which includes
the requirement to move quickly to reduce greenhouse gas emissions and
reduce air pollutants, supports the extensive deployment of solid oxide
fuel cell technology (SOFCs).
SOFC systems offer the opportunity
to meet energy needs by cleanly and quietly producing electricity and are
an alternative to large, point-source power stations. SOFC technology
extends the lifetime of our existing fuel resources, maximizes their energy
conversion efficiency, delivers power more flexibly, and significantly
diminishes greenhouse gas (GHG) emissions, air pollution and the causes
of smog. SOFCs have particular promise, as they can efficiently utilize
traditional fuels such as natural gas, “syngas” captured from coal, propane,
and diesel, as well as biofuels produced from biomass and landfills, and
can serve as a bridge to the future hydrogen economy. Minister of Natural
Resources, Gary Lunn’s comment that ‘new and emerging technologies will
play a significant role in helping industry achieve the targets’ is therefore
much welcomed by SOFC Canada in support of the development and commercialization
of SOFC technology. The Strategic Technical Plan is central to coordinating
stakeholders to deliver this technology on an accelerated timescale to
meet the needs of Canada and beyond.
SOFC Canada is a new organization,
focussed on the integration of all major Canadian solid oxide fuel cell
and other high temperature fuel cell-related research, development and
demonstration initiatives, in order to foster the co-ordination and sustainable
funding of R&D and commercialization of SOFCs for the world market.
Backgrounder
What Is A Fuel Cell? In principle,
a fuel cell operates like a battery. Unlike a battery, a fuel cell does
not run down or require recharging because it produces energy in the form
of electricity and heat as long as fuel is supplied. A fuel cell can be
scaled to power everything from cell phones to entire towns and thus are
very flexible sources of electrical power. A fuel cell relies on electrochemistry
and not combustion. Consequently, emissions are much less than from fuel
combustion processes, with the potential for less smog production and cleaner
air.
How Do They Work? A single fuel cell
consists of two electrodes sandwiched on either side of an electrolyte.
Oxygen or air passes over one electrode and fuel over the other, generating
electricity, water (sometimes carbon dioxide) and heat. Typically, many
single cells are grouped together into “stacks” to increase the power of
the device.
What are Solid Oxide Fuel Cells?
Solid oxide fuel cells use hard ceramic compounds for the electrolyte and
electrodes and operate at very high temperatures. There are two typical
configurations for assembling the stacks of SOFCs. Tubular designs
use a bundled array of ceramic tubes, while planar designs use flat cells
stacked together like plates. SOFCs are suitable for stationary power
applications, for combined heat and power applications in homes and industry,
and work is ongoing to make them portable for use as auxiliary power units
for transportation and other applications.
Benefits of Solid Oxide Fuel Cells:
An important issue to our society is the rapidly escalating demand for
clean, reliable and secure sources of energy. At the same time, we
are experiencing increasing fuel costs, pollution, and greenhouse gas (GHG)
emissions. Solid oxide fuel cell technology can help reduce these
problems because they offer:
-
High efficiency of more than 70% when
used in combined heat and power applications;
-
Environmental benefits, including cleaner
air and reduced smog due to lower emissions of CO2 and other GHGs and pollutants
than when the same type of fuel is burned to produce the equivalent amount
of energy;
-
Ability to sequester the CO2, as SOFCs
generate a concentrated stream of high purity carbon dioxide which can
be trapped and sequestered to significantly lower Canada's CO2 emission
levels
-
Fuel flexibility, since they can use
hydrogen, a variety of fossil fuels, and some renewable sources of fuel.
SOFC technology also offers socioeconomic
benefits since it forms the basis of a high-technology industry that will
develop products to be sold world-wide.

|