Refrigerating and Air Conditioning Evaporators – Commercial
Early copper tube and aluminium fin, static evaporator for small commercial refrigerated fixture, representative of a new, mid-century, high conductivity, high heat transfer cooling unit equipped for thermostatic expansion valve, Circa 1945.
Technical Significance:
The 1950’s brought with them a flood of demands for new small refrigeration fixture applications, for example, for reach-in refrigerators to display cases of all types. The application of secondary, finned surface and the development of a small thermal expansion valve with adjustable superheat provided the market with the first big steps, through vastly improved thermal heat transfer efficiency, as well as the efficient use of refrigerant passages by improved refrigerant flow control.