The sole objective of this paper is to investigate Simulation and Optimization process for the production of polyethylene terephthalate, the biggest polymer being consumed all over the world. In this way, two polymerization reactors are replaced with one polymerization reactor. In this way equipment and operating and many other cost was reduced. Discussion has also been made on the optimum temperature and pressure along with most suitable catalyst. The objective function for the polymerization reactor is to maximize the production as well as conversion. It is found that the reactor should be operated at a high temperature initially to obtain high conversion of Dimethyl Terephthalate (DMT) first, but then it should be lowered to reduce the formation of side products. Previous work was done on Simulation for the batch reactor only but in this work the Simulation was applied to the continuous polymerization reactor and results is investigated.
This article presents, a load management system is designed and implemented to integrate renewable energy resources (RES) (solar and wind), which manage the load according to the supply/demand and the user's priorities. The system is implemented on a hybrid system integrating wind energy, solar energy, utility supply, and battery energy storage system. Load management is carried out via switching of the loads. The sources can also be turned ON and OFF. During excess power, the battery module works as an energy storage unit or backup energy supply unit during demand. Loads can be turned ON and OFF wirelessly via GSM. The grid operator can switch the loads by simply sending a command via a short service message (SMS). In the end, the system is tested, and the results are presented. The hybrid system is simulated in MATLAB/Simulink first and then hardware implementation is carried out, which involves integrating renewable resources via converters and load management by switching using a microcontroller (Arduino).
A Fall is defined as an event that results in a person coming to rest inadvertently on the ground or floor or other lower level. Fall-related injuries may be fatal or non-fatal. It puts the elderly population, i.e., people of 65 years old, and over, in a dangerous situation. It is why we need a fast and efficient fall detection system to provide first aid and rescue the patient. The existing fall detection devices are not widely used because they do not meet the expectations of the users like the effectiveness of detecting a fall, time to inform guardian to provide necessary precautions and rescue the affected person on time. This device differs from other devices firstly in a way that it is a cheap portable device; secondly, as it was designed and assembled in a Muslim majority country, it should be able to distinguish fall from different movements of Salah. The tool uses a three-axis Accelerometer and Gyroscope sensor, which measures the acceleration and rotational motion in the X, Y, and Z-axis, respectively, which is controlled by a microcontroller called Arduino. The board uses a Wi-Fi module to send data wirelessly through the internet.
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