Refrigerating and Air Conditioning Compressors – Household
A FRIGIDAIRE, MODEL G, TWIN CYLINDER, 1/4 HP, ULTRA SLOW SPEED COMPRESSOR, 1929: With 16″ flywheel, operating at 350 RPM, this compressor, used in large cabinet refrigerators, would stand as a kind of “metaphor”, a shortcut in language, standing for an historic genre of high displacement, slow speed compressors for sulphur dioxide refrigerant, part of the design idiom of the time, dictated by conservative engineering preference, limited know-how, materials and manufacturing methods.