http://suspace.su.edu.bd/handle/123456789/16 2026-06-03T07:14:19Z 2026-06-03T07:14:19Z Md., Mokshed Alam http://suspace.su.edu.bd/handle/123456789/2793 2026-04-22T04:39:33Z 2025-01-12T00:00:00Z

DESIGN & FABRICATION OF SHELL AND TUBE HEAT EXCHANGER Md., Mokshed Alam The Shell and Tube Heat Exchanger project demonstrates an effective method of transferring heat between two fluids without direct contact, using a widely applied and industrially reliable design. In this system, one fluid flows inside a bundle of tubes, while the other moves around these tubes within an outer shell, allowing heat to transfer through the tube walls due to the temperature difference. The model provides practical insights into key heat transfer concepts, including conduction, convection, and overall thermal efficiency. The experimental setup allows observation of parameters such as inlet and outlet temperatures, flow patterns, and heat transfer rates under controlled conditions. Construction materials like mild steel and metallic tubes are selected for their strong thermal conductivity and mechanical durability. This project illustrates how shell and tube heat exchangers are essential in industries like power generation, chemical processing, refrigeration, and other process industries. By recovering and reusing thermal energy, the system highlights energy efficiency improvements. Its simple design, easy maintenance, and ability to operate under high pressures and temperatures make it highly reliable. Overall, this prototype offers hands-on learning while emphasizing the critical role of heat exchangers in energy conservation and thermal system optimization.

2025-01-12T00:00:00Z Shoriful, Islam http://suspace.su.edu.bd/handle/123456789/2792 2026-04-22T04:37:12Z 2025-01-12T00:00:00Z

Design and Implementation of a Smart Vertical Parking System. Shoriful, Islam Due to rapid urbanization and increasing vehicle ownership, parking space scarcity has become a major problem in modern cities. Conventional parking systems require large horizontal spaces, which are often unavailable in densely populated areas. Automated and robotic parking systems offer an effective solution by utilizing vertical space efficiently. This project presents the design and development of a DIY robotic parking system that demonstrates a vertical parking mechanism using a belt and pulley lifting system. The system is conceptually designed to handle real-life vehicle loads, while a scaled prototype using toy cars is developed for demonstration purposes. An Arduino Mega microcontroller is used as the central control unit, integrated with RFID-based access control, IR sensors for slot detection, and an LCD display for system status. The developed prototype successfully demonstrates automated parking and retrieval operations. The proposed system provides a cost-effective, scalable, and space-efficient solution for future smart parking applications.

2025-01-12T00:00:00Z Md, Asaduzzaman http://suspace.su.edu.bd/handle/123456789/2791 2026-04-22T04:35:33Z 2025-01-12T00:00:00Z

SOLAR - DRIVEN SEAWATER DESALINATION SYSTEM Md, Asaduzzaman This project presents the design and development of a Seawater Desalination Machine aimed at producing safe and usable fresh water from saline seawater. Due to the increasing scarcity of potable water, especially in coastal and remote regions, desalination has become a practical and necessary solution. The proposed system mainly operates on Reverse Osmosis (RO) technology, where seawater is forced through a semi-permeable membrane under controlled pressure. This process effectively removes dissolved salts, suspended particles, microorganisms, and other harmful contaminants from the water. The machine consists of a pre-filtration unit, high-pressure pump, RO membrane, storage tank, and necessary piping and control components. Pre-filters help protect the membrane by removing larger impurities, while the RO membrane ensures high-quality desalinated water. The compact and modular structure of the system makes it easy to install, transport, and maintain. This desalination machine is suitable for small-scale applications such as households, coastal communities, boats, laboratories, and emergency water supply systems. The project highlights a cost-effective and reliable approach to addressing water shortages. In the future, the system can be integrated with renewable energy sources like solar power to improve sustainability and reduce operational costs, making it an environmentally friendly solution to global water challenges.

2025-01-12T00:00:00Z MD, BIJOY AHMED http://suspace.su.edu.bd/handle/123456789/2790 2026-04-22T04:33:34Z 2025-01-12T00:00:00Z

DESIGN & FABRICATION OF A SOLAR BASED POWER CHARGER MD, BIJOY AHMED The increasing use of portable electronic devices has created a growing demand for reliable, portable, and environmentally friendly power sources. Conventional charging methods depend heavily on grid electricity, which is often unavailable in remote areas and contributes to environmental pollution. This project presents the design and implementation of a solar based wireless power charger that utilizes renewable solar energy to charge electronic devices through both wired (USB) and wireless methods. The proposed system consists of a solar panel, solar charge controller, 12V battery, DC–DC converters, USB output, and a wireless charging module. Solar energy is converted into electrical energy using a photovoltaic panel and regulated by the charge controller to safely charge the battery. The stored energy is then supplied to USB and wireless charging units, ensuring continuous power availability even during low sunlight conditions. Wireless charging is achieved using electromagnetic induction, providing convenient and contactless charging. The system was tested under different operating conditions, and the results demonstrate reliable performance for low power devices. Although wireless charging introduces some efficiency losses, the overall system proves to be portable, eco-friendly, and suitable for off-grid and emergency applications. This project highlights the feasibility of integrating solar energy with wireless charging technology as a sustainable alternative to conventional charging methods.

2025-01-12T00:00:00Z