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CP-6: Conference Paper Session 6: Advanced Cooling Technologies II
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| Presentations | ||
Study Of Thermal Performance Of Nocturnal Cooling-Assisted Hybrid Air-Conditioning System Used in Porous Brick Constructed Building for Hot Climates 1Tatyasaheb Kore Institute of Engineering and Technology, Warananagar, Kolhapur, Maharashtra, India; 2Department of R and D, Tecnimont Pvt. Ltd., Malad, West Mumbai, Maharashtra, India As urbanization accelerates in hot climate regions, the increasing heat loads create significant challenges to energy consumption and thermal comfort in buildings. This study examines thermal performance of Nocturnal Cooling-Assisted Hybrid Air Conditioning System implemented in porous brick constructed building specifically designed for hot climates. The system leverages passive cooling techniques, such as nocturnal radiative cooling and superior thermal insulation porous brick walls, to reduce indoor temperatures during extreme heat periods. The performance of air conditioning system with these passive techniques for building of hot climate is studied and compares it with conventional system. In this study, analytical approach and Finite Element Analysis are used for heat transmission estimation through porous walls, whereas CFD is utilized for thermal analysis of Nocturnal cooling system. The mathematical model developed in this study evaluates heat load calculations and hybrid system's cooling capacity, energy efficiency, and impact on thermal comfort. The present study emphasizes the significance of heat resistance of Insulated brick (Contents: 75% Clay, 6.25% Rice Husk Ash, and 18.75% Fly Ash) with 30% porosity, reducing heat transfer by 5 to 7 times compared to solid clay bricks. It shows 45 % to 50 % reduction in building heat load, assisting air conditioning system in saving operating cost and lowering its emissions. Further study highlights that during night time, Nocturnal Cooling system shares heating load with air conditioning system by cooling hot air by 3 to 4 oC. It lowers heat load by 8 to 15 % of conventional air conditioning system and enhances COP of system. It reduces energy demands by which this system contributes for development of zero-energy buildings. These obtained results highlight the hybrid system's potential to foster sustainable building practices and provide energy-efficient cooling solutions in hot climate urban environments. Advancement in Air-Conditioning and Refrigerating Systems and Its Impact on Modern Buildings Gulf Experts Trading & Electromechanical Contracting W.L.L, Qatar Air-conditioning and Refrigerating Systems The advancement in air-conditioning and refrigerating systems is pivotal for enhancing energy efficiency and environmental sustainability in modern buildings. This paper delves into the latest innovations and best practices in the design, installation, and maintenance of HVAC systems. Emphasizing the integration of smart controls and IoT technologies, the paper explores methods to optimize system performance, reduce energy consumption, and improve indoor air quality. Technical discussions will cover the use of low-GWP (Global Warming Potential) refrigerants, advancements in heat exchanger design, and the implementation of variable speed drives (VSD) for compressors and fans. Additionally, the paper will analyze refrigerant management practices, including leakage detection and recovery systems, and their impact on system efficiency and environmental compliance. Case studies from various projects will illustrate the practical applications and benefits of these advanced systems, providing valuable insights into overcoming common challenges and achieving regulatory standards such as the Montreal Protocol and F-Gas regulations. | ||