Hydronic rooftop cooling systems

This invention describes a rooftop air conditioning unit that combines a standard refrigerant cooling system with an evaporative pre-cooling section. The evaporative part uses water and parallel plates to cool incoming air and the refrigerant condenser, making the overall system more efficient. It can also include a water-based heating system.

Why it matters: Filed before the intense global focus on energy efficiency and decarbonization in commercial HVAC. The hybrid evaporative-refrigerant design offers a compelling solution for reducing energy consumption in today's climate.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedRefrigerant loop, heat exchangers, water pumps, controls.

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