Analysis on Evaporation Characteristics of Palm Oil Biodiesel Using a HSDT Method

The purpose of this study is to investigate the evaporation characteristics of different types of fuels by applying the hot surface depositionDeposition test (HSDT). Generally, HSDT method is a simplified method to simulate fuel depositionDeposition in dieselDiesel engine. In this study, dieselDiesel fuel (DF) and palmPalm oil biodieselBiodiesel with different blend ratio (B10-B50) were used to evaluate the fuel droplet evaporation behaviour on a heated aluminum alloy plate surface. Single fuel droplet was impinged on the heated plate at various surface temperature (Ts). Important data from the evaporation characteristics was the maximum evaporation point (MEP), which is the temperature point where a droplet evaporates in the shortest lifetime (tlife). MEP is referred to identify the surface temperature range in which less deposits will be produced by the test fuel. Furthermore, MEP also used to determine the appropriate droplet interval to create wet and dry condition in the fuel depositionDeposition test. The obtained MEP was 360 °C (DF), 365 °C (B10, B50), 375 °C (B20, B40), and 385 °C (B30).