ABSTRACTudududThe increasing of energy that needed in fossil-based fuel such as diesel, gasoline and kerosene causes the exploitation of this resource increases. Massive exploitation caused the availability of this commodity decreased significantly. Therefore, it is really important to find alternative energy source before it completely used up. One of the most potential source of energy is bioethanol.udIn this research, distillation is designed system automatically. The system is controlled by microcontroller ATMega 8535. LM35 is choosen as a temperature sensor. This system works based on-off control system. Principle of the system based on boiling point of bioethanol at 78oC. Relay as the actuators work like a switch that will turn on and turn off the heater in accordance microcontroller commands. It will keep range of system temperature around the boiling point of bioethanol.udThe results of experiments and analysis system show that the system takes 145 minutes to reach the temperature setpoint. This distillation system quite enough to keep the setpoint temperature arround 20 minutes with 80°C as the highest and 76oC as the lowest temperature. This system can produce bioethanol in the level of 70%.udududkeyword : distillation, microcontroller ATMega 8535, on-off temperature control, LM35ud
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机译：摘要 ud ud ud化石燃料（例如柴油，汽油和煤油）所需能量的增加导致对这种资源的开采增加。大规模开采导致该商品的可利用性大大降低。因此，在完全用完之前寻找替代能源非常重要。生物乙醇是最有潜力的能源之一。 ud在这项研究中，蒸馏是自动设计的系统。该系统由微控制器ATMega 8535控制。LM35被选作温度传感器。该系统基于开关控制系统。该系统的原理基于生物乙醇在78oC的沸点。继电器作为执行器工作，就像一个开关，根据微控制器的命令打开和关闭加热器。它将使系统温度范围保持在生物乙醇的沸点附近。 ud实验和分析系统的结果表明，该系统需要145分钟才能达到温度设定点。该蒸馏系统足以将设定温度保持在20分钟左右，最高温度为80°C，最低温度为76oC。该系统可产生70％的生物乙醇。 ud ud ud关键字：蒸馏，微控制器ATMega 8535，开关温度控制，LM35 ud
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