| 释义 |
cold-air machine cold-air machine[′kōld ¦er mə‚shēn] (mechanical engineering) A refrigeration system in which air serves as the refrigerant in a cycle of adiabatic compression, cooling to ambient temperature, and adiabatic expansion to refrigeration temperature; the air is customarily reused in a closed superatmospheric pressure system. Also known as dense-air system. |