SELECTION OF LUBRICANT FOR MANUFACTURE OF HVAC COMPONENTS

摘要

To minimise emissions from HVAC systems to supply air clean and low emission HVAC components should be used. This supports use of manufacturing techniques, which utilise low emission lubricants or lubricants that leave only minor amount of residues on the surface. In this study the lubrication, evaporation and odour emission properties of fourteen lubricants were studied. Lubrication properties were studied by pin-on disk method. Evaporation of the volatile compounds from the lubricants on sheet metal was followed for 91 weeks. Odour emissions of four lubricants were analysed by olfactometer with untrained panel of 41-49 members. The remarkable variations were found between the properties of lubricants. The evaporated fraction of the lubricants varied from 0 to 90%. Friction coefficients varied fourfold and threshold values of odour showed eight-fold differences between lubricants. According to the different properties of lubricants, the selection of lubricant is important to improve hygiene of the components.