Efficient cooling for hospital infrastructure
Project overview
Hospitals place high demands on cooling infrastructure. Systems must operate reliably around the clock while meeting strict requirements for hygiene, noise control, energy efficiency, and water use.
At the Fürstenfeldbruck Hospital in Germany, JAEGGI was selected to deliver a cooling solution that would support dependable operation while reducing energy consumption and long-term operating costs.
The challenge
The hospital required a cooling system that could:
- Operate reliably under continuous load
- Minimize water consumption
- Integrate into an existing building environment
- Support efficient, low-maintenance operation over the system lifecycle
Hospitals operate under strict conditions that place unique demands on cooling infrastructure. Cooling systems must support continuous, uninterrupted operation while meeting requirements around hygiene, noise control, and patient comfort.
In this case, the hospital also faced increasing pressure to reduce both water and energy consumption, without compromising reliability. Rooftop installation introduced further constraints, including limited space, load-bearing considerations, and the need to minimize noise emissions in a sensitive healthcare environment.
Any solution needed to deliver predictable performance across varying ambient conditions, while supporting low-maintenance operation and long-term cost control.
The JAEGGI solution
JAEGGI installed ADC dry coolers on the hospital roof as part of a hybrid cooling strategy designed specifically for healthcare infrastructure, where reliability, efficiency, and controlled resource use are critical.
Compared to the existing cooling setup, the new system provides up to twice the available cooling capacity, creating additional operational headroom while maintaining stable performance during peak demand. This increased capacity supports resilient operation without requiring continuous wet cooling.
The system is designed to operate primarily in dry mode, with adiabatic support engaged only when ambient conditions require it. This operating strategy allows the hospital to maintain required cooling performance while significantly reducing water consumption compared to conventional wet cooling systems.
JAEGGI heat exchangers were combined with Güntner condensers within a single, coordinated system architecture, ensuring efficient heat rejection and reliable operation. Controls and operating modes were selected to support predictable system behavior, effective response to load variation, and low-maintenance operation over the system lifecycle.
Operational benefits
The installed solution supports:
- Reliable cooling for critical hospital operations
- Reduced water and energy consumption
- Lower lifecycle operating costs
- Quiet operation suited to a healthcare environment
By combining dry operation with targeted adiabatic support, the system balances performance, efficiency, and long-term operational predictability.
Outcome
The hospital nearly doubled installed cooling capacity within the existing rooftop footprint. Cooling demand is met primarily through dry operation, with adiabatic support required only during peak conditions (approximately 350 hours per year), limiting water use to those periods. The system operates within hospital noise limits and complies with applicable hygiene and environmental regulations, supporting continuous operation of critical infrastructure.
Project insight
The cooling system was designed to support continuous hospital operation while minimizing water and energy use through a predominantly dry operating strategy.