Ultra-Efficient Fresh-Air Cooling for Hot and Humid Climates

SYNERGIA9n1 Hybrid Cooling

The project aimed to develop and validate a low-energy hybrid cooling system tailored for extreme hot and humid environments, with a primary application in dairy farm climatization. It sought to significantly reduce electricity and water consumption compared to conventional HVAC systems while improving thermal comfort and air quality.
Synergia9n1

Another objective was to enhance animal welfare and productivity by mitigating heat stress. The project also targeted reductions in carbon emissions through integrated passive and hybrid cooling strategies. Finally, it aimed to advance a Qatari-patented technology toward commercial readiness.

Methodology

The project designed and fabricated a full-scale hybrid fresh-air handling unit integrating liquid desiccant dehumidification, indirect evaporative cooling, and vapor compression cooling. Experimental testing was conducted under simulated high-temperature and high-humidity conditions to replicate dairy farm environments. System performance was benchmarked against conventional condensing units using metrics such as kW/ton, COP, EER, cooling capacity, and humidity reduction. Advanced thermodynamic modeling and regression analysis were used to understand heat and mass transfer behavior within the system. Iterative prototype optimization addressed operational challenges such as desiccant regeneration and flow distribution. Stakeholder demonstrations and workshops supported validation, dissemination, and feedback.

Outcomes

The project successfully delivered a validated hybrid cooling prototype achieving kW/ton values below 0.7, representing more than 45% energy savings compared to conventional systems. It demonstrated stable cooling performance, effective humidity control, and scalability for agricultural and building applications. Outcomes included patented intellectual property, a commercial-scale prototype, public demonstrations, and international awards for energy innovation and patent excellence.

Project ID

2013-2016  |  NPRP 7-332-2-138
Space Cooling Using Solar Energy and Seawater Desiccants

2022-2024  |  MME03-0111-220043
Novel Hybrid Cooling Technology for Low-Energy Climatization of Dairy Farms

Collaborators

Ministry of Municipality
Baladna