Analysis of Heat Potential in Solar Panels for Thermoelectric Generators using ANSYS Software

The growing demand for energy has an impact on the development of environmentally friendly renewable energy. The sun is energy that has the potential to be used as electrical energy through light energy and heat energy. Recently, research interest related to photovoltaic performance has increased. Several studies have investigated the effect of panel cooling on photovoltaic performance. In this study, the use of exergy solar panels is considered to improve performance by adding a thermoelectric system. Research work related to photovoltaic testing with thermoelectrics at low temperatures has not been carried out. Therefore, experimental methods to obtain temperature profiles and simulation methods to see the power potential generated from thermoelectrics have been carried out. The experimental method is carried out using mono-crystalline panels with type K sensors to retrieve temperature data and data acquisition as deviations from the current, voltage, and temperature results of the panel. The simulation model was carried out using the ANSYS software. Tests are carried out, taking into account the effect of back panel temperature on system performance. The results showed that the photovoltaic temperature fluctuated due to the influence of cloud cover, the highest photovoltaic temperature was 57°C, and the lowest temperature was 30°C. The maximum power produced by photovoltaic is 39.8W. It is then applied to the thermoelectric simulation based on the highest temperature, and the maximum power value is 1673.4 mW. This photovoltaic-thermoelectric generator system produces a 4.2% increase in power value over conventional photovoltaic systems. The findings in this study can be used as a reference for all types of low-temperature photovoltaic-thermoelectric systems. Doi: 10.28991/CEJ-2022-08-07-02 Full Text: PD

Design manufacturing mesin pengaduk adonan roti

Currently, bread is one of the alternative staple foods that is quite in demand by the public. This has resulted in the bread making industry being enthusiastically welcomed by business people because it has bright and open opportunities for large and small scales. However, the Micro, Small and Medium Enterprises (MSMEs) industry is unable to compete. One of them is because of the use of technology in the dough kneading process. This article discusses product planning for a horizontal type of bread dough mixer using the Design for Manufacturing and Assembly (DFMA) method and Quality Function Deployment (QFD) analysis where the design is based on design, materials, analysis, and equipment and manufacturing process planning. In this study, the Action Research method, engineering engineering and the Solidwork simulation design software were used. The design of the machine can be used for a stirring capacity of 10 kg and a rotation speed of 40 rpm. The results of the design consist of several main parts, namely the main frame, container, stirrer, motor, and transmission syste

Inductor Based Active Cell Equalization for Ultracapacitor Energy Storages

Ultracapacitors, known for their high power density and long cycle life, are widely used in various applications. However, when ultracapacitor cells are connected in series, voltage imbalances can occur, limiting overall energy storage capacity and system performance. This paper presents an investigation into inductor-based active cell equalization techniques for ultracapacitor energy storage systems. The proposed approach utilizes inductors, switching devices, and control circuitry to efficiently balance cell voltages. By monitoring cell voltages and activating switching devices when predetermined thresholds are exceeded, energy is transferred from higher voltage cells to inductors during the charging phase. In the subsequent discharging phase, the stored energy is released, equalizing the cell voltages. This iterative process continues until voltage balance is achieved. Inductor-based active cell equalization offers advantages such as rapid voltage equalization, wide voltage range operation, and electrical isolation between cells. However, challenges include system complexity, cost, and losses introduced by switching devices. Ongoing research focuses on optimizing design and control strategies to improve energy efficiency and address these challenges. The proposed technique shows promise in maximizing energy storage capacity and enhancing the performance and lifespan of ultracapacitor systems. This circuit could balance the capacity of the ultracapacitor in 2.3 seconds with a voltage ripple of 0.0038 V (0.18 %). Further advancements are expected to promote the widespread adoption of inductor-based active cell equalization in diverse applications. (Abstract