Hello All,
I see a fair number of Cryo-Trans refrigerator cars on the rails and have noticed that some of them have external truck-style refrigeration units and platforms, but many others do not. As I understand it, the ones with the obvious refrigeration units are old CO2 cooled cars that have been converted to mechanical refrigeration (and some are newer cars built that way). What about the ones without an obvious refrigeration unit, as shown in the photo in this article?
Are they still cooled by CO2 or nitrogen? Are they just serving as insulated boxcars nowadays? Do they have another mechanical refrigeration system that is inside the car and just isn’t obvious?
Thanks