Aug 242013


Refrigerated trucks equipped with hydrogen fuel cells to make deliveries in three markets

Grocery merchants in Texas, California and New York will soon have ice cream, frozen foods and fresh produce delivered by tractor trailers whose refrigeration units are powered by fuel cells, a clean technology that makes energy silently and with dramatically reduced emissions.

The fuel cells will do the work normally done by a small diesel engine, which keeps the cargo at the proper temperature while the trucks are making deliveries. Each of the four trucks will still be equipped with a main diesel engine that actually powers the truck.

Researchers at the U.S. Department of Energy’s Pacific Northwest National Laboratory, which is overseeing the project, believe this will be the first time that refrigerated trucks making deliveries have been equipped with a fuel cell — a device that creates electricity by driving chemical reactions using hydrogen and air. The only byproducts are heat and water.

“This is a great application for a fuel cell,” said Kriston Brooks, the PNNL researcher leading the project. “A trailer refrigeration unit traditionally is powered by a small diesel engine or electric motor that drives compressors to provide cooling to the cargo. A fuel cell can potentially provide a clean, quiet and efficient alternative by powering the electric motor.”

Two leading fuel cell manufacturers, Massachusetts-based Nuvera and Albany, N.Y.-based Plug Power Inc., will each receive $650,000 from DOE’s Office of Energy Efficiency and Renewable Energy. The companies will provide matching funds and labor of their own. A PNNL team led by Brooks will oversee and evaluate the two-year program.

Industry officials estimate that approximately 300,000 refrigerated trucks with auxiliary power units are on the road in the United States. By replacing the small diesel engines with the more efficient fuel cell, users will see fuel savings of approximately 10 gallons a day per unit, in addition to reduced emission of pollutants and significantly quieter operation.

“Accelerated fuel cell use in this application is also expected to create jobs in the energy sector, increase fuel cell manufacturing volume, decrease costs, and catalyze a stronger domestic supplier base,” said Jamie Holladay, PNNL’s sector manager for fuel cell technologies.

Fuel cells are becoming more common as energy sources in buildings and in vehicles such as buses. While the devices are generally more expensive than traditional forms of energy generation, many scientists and product developers expect that as they become more widely adopted and production levels increase, their cost will come down, similar to what has happened to products like cell phones.

“One of the goals is to accelerate fuel cell use in industry,” said Brooks. “In spite of their higher costs now, the higher efficiency and zero emissions from fuel cells are enough to convince many companies not to wait to implement this technology. Fuel cell products are already used widely in warehouses, and this project broadens their reach.”

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