
Process cooling of air-cooled refrigeration systems
On the roofs of the production halls, a high-pressure nozzle system cools the ambient air of the chillers in a targeted manner, thus ensuring trouble-free operation of the hall cooling system even in summer.

Additional process cooling
For the circulation cooling of the HELLA production halls, air-cooled refrigeration systems are used on the roofs as chillers. The connected water circuit circulates cold water, which absorbs the process heat from the halls and returns it to the chiller's refrigerant at higher temperatures. The heat is released into the air via the compressed refrigerant and the water is cooled again in a closed circuit. "In the past hot summers, there have been more frequent functional failures of the refrigeration systems because the refrigerant could no longer be sufficiently liquefied in the condensers due to the heat on the roofs. On the recommendation of Condair Systems, we have installed an additional air humidification system since 2021 only for the process cooling of the refrigeration systems on the roofs. Since then, the circulation cooling system has also been working smoothly in summer," explains Thomas Hering, Head of Technical Service at HELLA.
Efficient and robust
The installed Condair ML Flex System air humidification system is operated by a high-pressure pump and cools the ambient air of the chiller in a targeted manner via a nozzle string made of stainless steel. 100 litres of water from the robust high-pressure nozzle humidification absorb around 70 kW of heat with only 0.6 kW of energy consumption. The cooling of the production halls is thus ensured because the adiabatic cooling effect prevents the refrigerant from compressing too much, even in summer.

"On the recommendation of Condair Systems, we have installed an additional air humidification system since 2021 only for the process cooling of the refrigeration systems on the roofs. Since then, the circulation cooling system has also been working smoothly in summer."

Information package: In-room humidification
Always the right fit – find out more here!In-room humidifiers are used specifically where humidity is required. Suitable for every application and room size, ideal for retrofitting, energy-efficient and easy to maintain.
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