M. Setiyo, S. Soeparman, S. Wahyudi, N. Hamidi
Liquefied Petroleum Gas vehicles (LPG Vehicles) provide a potential cooling effect about 430kJ/kg LPG consumption. This cooling effect is obtained from the LPG phase change from liquid to vapor in the vaporizer. In the existing system, energy to evaporate LPG is obtained from the coolant which is circulated around the vaporizer. One advantage is that the LPG (70/30 propane / butane) when expanded from 8 bar to at 1.2 bar, the temperature is less than-25 °C. These conditions provide opportunities to evaporate LPG with ambient air flow, then produce a cooling effect for cooling car's cabin. In this study, some LPG mix was investigated to determine the optimum condition. A simulation was carried out to estimate potential cooling effects of 2000 cc engine from 1000rpm to 6000?rpm. In this case, the mass flow rate of LPG is a function of fuel consumption. The simulation result shows that the LPG (70/30 propane/butane) provide the greatest cooling effect compared with other mixtures. In conclusion, the 2000 cc engine fueled LPG at 3000rpm provides potential cooling effect more than 1.3 kW, despite in the low engine speed (1000rpm) only provides about 0.5 kW. © 2016 AIP Publishing LLC.
University of Brawijaya, Indonesia; Muhammadiyah University of Magelang, Indonesia
