Abstract: Waste heat recovery (WHR) from domestic appliances and processes offers a significant opportunity to improve energy efficiency and reduce household energy bills. Phase Change Materials (PCMs) are a promising technology for WHR due to their ability to store and release thermal energy at specific temperatures. This project proposes the design and fabrication of a WHR system using PCMs for domestic applications. The system aims to capture waste heat from various domestic appliances and processes, such as clothes dryers, ovens, or range hoods, and store it in PCMs. The stored thermal energy can then be released for various applications, including preheating water, space heating, or even cooking. The project presents a conceptual design of the system, identifies potential PCM candidates, and outlines fabrication and testing procedures. It also highlights the potential benefits of the system, such as reduced energy consumption, sustainability, improved comfort, and scalability. The project acknowledges the challenges of material selection, heat exchanger design, leakage prevention, and system integration. It concludes by emphasizing the need for further research and development to optimize materials, design, and fabrication processes for a commercially viable domestic WHR system using PCMs The system will target specific waste heat sources, such as exhaust from clothes dryers, ovens, or range hoods. A compact and efficient heat exchanger will be designed to transfer heat from the waste source to the PCM. The PCM will be contained in a sealed and insulated container to prevent leakage and minimize heat loss. The stored thermal energy in the PCM can be released for various domestic applications, such as preheating water for showers or dishwashing, space heating, or even cooking. The system will be fabricated and tested, and its efficiency in capturing waste heat, storing it in the PCM, and releasing it for various applications will be evaluated. The project has the potential to significantly reduce energy consumption, promote sustainable living, and improve domestic comfort.

Keywords: Waste heat recovery,Phase change material (PCM),Domestic applications,Energy efficiency Thermal energy storage,Heat transfer,Renewable energy,Sustainable technology

| DOI: 10.17148/IARJSET.2024.11413