Net-zero-energy automated bio-diesel production unit

n this paper, the design and implementation of biodiesel process production unit controlled by a Programmable Logic Controller (PLC) and powered by photovoltaic (PV) is introduced. The main idea here is based on getting the biodiesel as a chemical reaction process of transestrefication offatty oils from wasted used cooking oil. This process requires continuous measurement from different sensors and take long hours to be finished. Hence, implementing a well-designed automated system is essential, while the need for operator supervision is greatly minimized, which in turn permits the labor cost to be reduced and optimizing the repeatability and efficiency of the whole process. The proposed unit utilizes an HMI with different SCADA facilities; hence, the operator can readily and efficiently take real time action on the flow of the process. The required electrical energy of the unit has been designed to be supplied through PV panels, which permits the production of the bio-diesel without the need for any other power source. The overall unit has been tested and found to be very reliable with significant energy efficient operation.