Dry ice used to increasing extent for perishable shipments : C. T. Longaker. (Railway Age, Vol. 109, No. 5.)
✍ Scribed by R.H.O.
- Publisher
- Elsevier Science
- Year
- 1940
- Tongue
- English
- Weight
- 64 KB
- Volume
- 230
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
Dry Ice Used to Increasing Extent for Perishable Shipments.-C. ,T. LONGAKER. (&A?way Age, Vol. 109, No. 5.) The carbon dioxide industry has been working for a number of years to popularize the use of dry ice, for refrigerating perishable commodities shipped by rail, but made little real progress until comparatively recently when it was shown that no specialized equipment need be installed at additional cost in the refrigerator cars.
With this limitation removed and a considerable background of satisfactory service performance, dry ice is now being used to an increased extent for railroad perishable shipments.
The recently simplified method of applying dry ice to refrigerator-car shipments is to use a combination of wet and dry ice in the regular bunkers of standard refrigerator cars without the employment of any special equipment.
The refrigerating effectiveness and the economic value of this method have been demonstrated in a series of operating tests conducted by research engineers of the Liquid Carbonic Corporation in collaboration with several railway refrigerator-car lines. These tests have shown, among other things, that the use of dry ice in combination with water ice in standard refrigerator cars with 2% in. of insulation thickness, furnishes the same service as water ice in super-insulated cars that have 5+ in. of insulation.
It is not necessary for the carriers to rush into competitive building programs to furnish shippers super-insulated cars since water ice and dry ice will get the same results.
One of the tests made to determine comparative results of the use of water ice in a super-insulated car versus the use of water-ice-dry-ice combination in a standard car was completed on a shipment from Indianapolis, Ind., to San Francisco, Cal. The type of lading and outside temperatures were practically the same in both cases.