Updated on Aug. 5, 2016. Delta is redefining the products it offers customers to further distinguish the choices available to them. Delta will offer best-in-class options for each of its customer segments with innovative multi-cabin experiences. Customers will have five products to choose from, including Delta One, First Class and Delta Comfort+ which offer premium amenities. Main Cabin and Basic Economy service will offer value options with Delta's high standards of service.
Rating Newest Oldest. Best Answer: The can gets cold for the same reason that any other refrigeration unit gets cold. (eg air conditioner, refrigerator, dehumidifier). Inside of the can, there is a chemical which can be used as a refrigerant. It's a chemical with a low vapor pressure. When you press the button on top of the can, you open a valve and release some of the pressure from the can.
When a central air conditioner freezes up, what actually freezes is the condensor unit's evaporator coil. This is the part of the air conditioning system that transfers (evaporates) heat from the inside to the outside of the home. There are two primary reasons the evaporator coil may freeze, it can either be due to 1) restricted air flow, or 2) lack of sufficient refrigerant. Either way, the result is that the air conditioner's evaporator coil cannot operate to properly dissipate heat, and in effect 'overcools' itself.