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[PFE Dry Ice Reefer Experiment
Bob Chaparro wrote:
PFE did experiment with dry ice refrigeration, but found it was too difficult to control, and often led to what we might call "freezer burn" on cargoes. As the trials were conducted with temporarily installed equipment and did not lead to any production cars, I did not include the info in the PFE book. In 1965, PFE experimented with a similar approach with super-cold refrigerant, using liquid nitrogen (see PFE book, page 178). Here again, temperature control proved hard to achieve. Those experimental cars were in service for a time, so they ARE in the PFE book.
Tony Thompson Editor, Signature Press, Berkeley, CA
2906 Forest Ave., Berkeley, CA 94705 www.signaturepress.com
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Publishers of books on railroad history
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