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Case Study
Air handling unit. Rotary heat exchanger for the air handling unit.
• Large airflow capacity(~ 20 m ³/ s)
• Segmented wheel and casing for easy transport and installation
• Cost-optimized design without excessive oversizing
• Advanced drive and control equipment for improved operation
The solution: Heatex model EQ rotary heat exchanger To address these challenges, Sovereign Air Movement selected the Heatex Model EQ rotary heat exchanger. Engineers from both companies collaborated to fine-tune the design, focusing on:
• Lowering pressure drop: To enhance system efficiency.
• Maximizing rotor size: The final size was optimized at 3800 mm in diameter.
• Choosing the perfect well height: A 1.8 mm well height was selected to accommodate the large airflow demands.
• Compact casing design: The rotor was enclosed in a compact casing that added only 140 mm to the overall size.
• Segmented rotor and casing: This feature ensured smooth on-site assembly and minimized logistical challenges.
Results and performance outcomes The implementation of the Heatex rotary heat exchanger yielded impressive energy savings and efficiency gains. The following results were recorded based on continuous 24 / 7 operation in London, England:
• Installed power reduction: 535 kW of heating power saved compared to a system without an air-to-air heat exchanger.
• Annual energy savings: 1,283,023 kWh saved versus not using an air-to-air heat exchanger.
• Return on investment: The heat exchanger’ s cost was covered within just one month of operation due to the significant energy savings.
Conclusion Sovereign Air Movement’ s successful integration of the Heatex Model EQ rotary heat exchanger demonstrates the impact of precision-engineered ventilation components in large-scale commercial applications. By optimizing heat recovery efficiency, reducing pressure drop, and ensuring easy on-site assembly, Sovereign Air Movement has delivered a highly efficient and costeffective AHU solution. This case study underscores the importance of selecting the right heat exchanger technology to enhance system performance and sustainability in commercial ventilation projects.
Principle drawing of the Heatex model EQ rotary heat exchanger. www. heat-exchanger-world. com Heat Exchanger World April 2025
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