HVLP spraying was designed to reduce emissions from solvent based paints that used to dominate the industry. HVLP stands for High Volume Low Pressure and as the name suggests it breaks up (or atomises) the paint using large volumes of air rather than high speed. Today the main relavence of this kind of spraying is the compact nature of the units and the fine finish provided.
I uses a Qtech Q5 HVLP sprayer for banisters, detailed plasterwork and ornate woodwork. HVLP makes runs far less likely that with brushing, it is far faster on complex surfaces and it is much more controllable than Airless spray machines.