Technician A says cryogenic reefers units have a heavy carbon footprint and ODP rating.Technician B says that R-22 has been approved for use in refrigerated trailers until the year 2020.Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because R-22, a refrigerant with ozone-depleting potential, was indeed used in refrigerated trailers until 2020. Technician A is incorrect as cryogenic reefers do not have a heavy carbon footprint or ODP rating since they use liquid nitrogen or carbon dioxide, which do not deplete the ozone layer.

Technician a Says Cryogenic Reefers Units Have a Heavy Carbon