http://suspace.su.edu.bd/handle/123456789/1636 2026-07-20T00:53:01Z 2026-07-20T00:53:01Z Rahman, Md. Shohanur http://suspace.su.edu.bd/handle/123456789/2918 2026-07-10T07:51:41Z 2026-05-05T00:00:00Z

Design, Fabrication and Performance Analysis of a Peltier Module-Based Water Cooling and Heating System Rahman, Md. Shohanur This project presents the design and implementation of an innovative Water Purifier System employing a Peltier Module for both cooling and heating functionalities. The system integrates advanced filtration components, including Activated Carbon, Mineral Sand Ball, Zeolite & Silica Gel, and a Ceramic Filter, along with a Pump Motor for water circulation and a Heat Sink for efficient heat dissipation. The filtration process begins with the ceramic filter, removing larger particles, followed by activated carbon to adsorb impurities and enhance water taste. Mineral sand balls contribute beneficial minerals, while zeolite and silica gel provide additional purification. The heart of the system lies in the Peltier Module, capable of cooling or heating the water as needed, offering a versatile solution for diverse applications. A carefully designed water circulation system, powered by the pump motor, ensures that water passes through each filtration stage and interacts with the Peltier Module for optimal treatment. The heat sink plays a crucial role in maintaining the efficiency and longevity of the Peltier Module by dissipating the generated heat. This integrated water purifier system aims to deliver purified water with improved taste, reduced impurities, and the flexibility of temperature control. The combination of cooling, heating, and multi-stage filtration makes it suitable for various environments, offering a sustainable and efficient solution for enhancing water quality. The project aligns with the growing demand for innovative water treatment technologies, addressing the need for clean and customized water solutions in different contexts.

2026-05-05T00:00:00Z Mozumder, Maksudur Rahman http://suspace.su.edu.bd/handle/123456789/2917 2026-07-10T07:46:02Z 2026-05-05T00:00:00Z

Performance Study of Composite Membrane in Microbial Fuel Cell For Enhanced Power Generation and Wastewater Treatment Mozumder, Maksudur Rahman Microbial fuel cells (MFCs) are gaining attention as an environmentally friendly technology because they can treat wastewater while simultaneously producing electricity. In this study, a double-chamber microbial fuel cell was developed using textile wastewater as the inoculum and substrate source. A low-cost composite proton exchange membrane (PEM) was prepared using polyvinyl alcohol (PVA), potassium chloride (KCl), and agar, and was chemically crosslinked with glutaraldehyde to improve its mechanical strength and ionic conductivity. The performance of this composite membrane was then compared with that of a conventional membrane under the same operating conditions. The experimental results showed a significant improvement in power generation when the composite membrane was used. The conventional membrane produced a maximum voltage of 0.242 V, whereas the PVA–KCl–agar composite membrane achieved a much higher voltage of 0.467 V. This improved performance is mainly due to the better electrical conductivity, larger surface area, and enhanced electrochemical activity of the composite membrane. These properties helped microorganisms attach more effectively to the electrode surface and allowed faster electron transfer during microbial activity, leading to improved electricity generation. In addition, the composite membrane provided better stability and supported efficient microbial growth and biofilm formation inside the MFC system. The findings clearly indicate that the composite membrane performs more efficiently than the conventional membrane in terms of electrochemical performance and sustainable energy production. Overall, this study demonstrates that the developed PVA–KCl–agar composite membrane can serve as an effective, low-cost, and eco-friendly alternative for microbial fuel cell applications. The system not only enhances bioelectricity generation but also offers a sustainable approach for treating industrial textile wastewater and reducing environmental pollution.

2026-05-05T00:00:00Z Shajib, Sayed http://suspace.su.edu.bd/handle/123456789/2916 2026-07-10T07:30:31Z 2026-05-05T00:00:00Z

Design, Fabrication and Performance Analysis of a Peltier Module-Based CPU Cooling System Shajib, Sayed This project presents the design and implementation of a Design, Fabrication and Performance Analysis of a Peltier Module-Based CPU Cooling System combined with a water-cooled heat sink for efficient thermal management. Modern CPUs generate excessive heat during continuous operation, which can affect performance, stability, and lifespan. To solve this issue, a thermoelectric cooling method is used where the Peltier module transfers heat from the CPU surface to the cooling system based on the Peltier effect. One side of the Peltier cools the CPU, while the hot side is attached to a water cooled heat sink system to dissipate heat effectively without using any cooling fan. Water circulation through the heat sink helps in maintaining a stable and uniform temperature, improving overall heat removal efficiency. A temperature monitoring system is used to observe real-time CPU temperature and ensure safe operation. This setup provides a quiet, compact, and efficient cooling solution compared to traditional air-cooling systems. The main goal of this project is to maintain optimal CPU temperature, enhance system reliability, and prevent overheating issues in high performance computing applications.

2026-05-05T00:00:00Z Pritom, Mithun Das http://suspace.su.edu.bd/handle/123456789/2915 2026-07-10T07:24:26Z 2026-05-05T00:00:00Z

Design and Fabrication of a Solar Energy Based Water Pumping System Pritom, Mithun Das This project presents the design, development, and implementation of a solar-powered automatic water-pumping system intended primarily for rural, remote, and off-grid applications where access to reliable electricity is limited or unavailable. The main objective of this system is to provide a sustainable, energy-efficient, and cost-effective solution for water supply using renewable solar energy. The proposed system integrates several key components, including a photovoltaic (PV) solar panel for energy harvesting, a rechargeable battery storage unit for energy backup, a charge controller for efficient power management, and a voltage regulation circuit to ensure stable system operation. In addition, an automatic control mechanism is implemented using a float switch and relay module, which enables the system to start and stop the water pump automatically based on the water level in the storage tank. To enhance the safety and durability of the system, a low voltage cutoff (LVC) module is incorporated to protect the battery from deep discharge conditions, thereby extending battery life and improving overall system reliability. The entire system is designed to operate on direct current (DC) power, eliminating the need for grid electricity as well as reducing dependence on conventional fuel-based pumping systems. The performance of the system has been evaluated through experimental testing under practical conditions. The results indicate that the system operates reliably, efficiently harvests solar energy, and successfully performs automatic water tank filling without manual intervention. The use of renewable solar energy not only reduces operational costs but also minimizes environmental impact by eliminating carbon emissions associated with fossil fuel-based pumps. Overall, the proposed design is simple, scalable, and economically feasible. It can be effectively implemented for domestic water supply, small-scale irrigation systems, and other agricultural applications, especially in rural and developing regions. The system offers a sustainable alternative to conventional water pumping methods and contributes to the promotion of green energy technologies.

2026-05-05T00:00:00Z