Publication Details
Abstract
Cooling towers are essential components of industrial thermal management, providing efficient heat rejection through evaporative cooling while conserving water and energy. This review critically examines modern design approaches with a particular focus on packing (fill) technologies that influence heat and mass transfer performance. Instead of merely classifying tower types, the study synthesizes recent developments in advanced fill materials (e.g., high-performance plastics, ceramics, cellulose composites, and bio-based alternatives) and evaluates their impact on wettability, fouling resistance, and long-term efficiency. Comparative insights from recent experiments highlight how surface texture, flow distribution, and hybrid configurations affect both cooling range and operational sustainability. The analysis identifies persistent challenges such as non-uniform wetting, scaling, and the environmental costs of synthetic materials, while also outlining emerging solutions including nanomaterial coatings, modular cartridge fills, and smart control integration. The review concludes that future research should move beyond material substitution and towards integrated system designs that balance efficiency, durability, and environmental responsibility.