A refrigerator truck or chiller lorry is a van or truck designed to carry perishable freight at low temperatures. Most long-distance refrigerated transport by truck is done in articulated trucks pulling refrigerated semi-trailers. Sometimes they are used to carry dead human beings.
The first successful mechanically refrigerated trucks were made for the ice cream industry in 1925. African American inventor Frederick McKinley Jones later contributed to the field. There were around 4 million refrigerated road vehicles in use in 2010 worldwide.
Refrigerator trucks can be ice-cooled, equipped with any one of a variety of mechanical refrigeration systems powered by small displacement diesel engines, or utilize carbon dioxide (either as dry ice or in liquid form) as a cooling agent. They are often equipped with small "vent doors" at the rear and front of the trailer. The purpose of these doors is to be kept open while hauling non-refrigerated cargo (often "backhaul"), so as to air out the trailer.
- "Chapter 30: Refrigerated Trucks and Trailers". The Refrigerating Data Book. American Society of Refrigerating Engineers. 1952. pp. 9–237.
About 1925, the ice cream industry pioneered the first successful mechanically operated refrigerated trucks, which were operated by methyl chloride condensing units. A generator, driven by a gasoline engine, supplied the power for the compressor motor.
- "6.2.2 Road Transport". 2010 Report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee (PDF) (Report). UNEP. February 2011. p. 94. ISBN 978-9966-20-002-0.
- "This Is What That Little Door On The Back Of Truck Trailers Is For". Jalopnik. Retrieved 2021-04-10.
- Prentice, B. E., & Benell, D. (1992). "Determinants of empty returns by US refrigerated trucks: conjoint analysis approach". Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, 40(1), 109-127. doi:10.1111/j.1744-7976.1992.tb03680.x (abstract).
- Guideline for long refrigerated trailers in Queensland // Queensland Government, August 2006
- Heat and Mass Transfer: Fundamentals and Applications, 4/e, ISBN 0073398128 (2011) Chapter 17-8 "Transportation of Refrigerated Foods" page 17-41
- UNIT 7 AIR CONDITIONING EQUIPMENT AND THEIR APPLICATIONS // IGNOU, School of Engineering & Technology, BME - 032; chapter 7.5 TRANSPORT REFRIGERATION - section "7.5.1 Refrigerated Trucks and Trailers", page 103