Adiabatic cooling systems for halls: An energy-efficient alternative to air conditioning
Workshops, warehouses, and production areas heat up quickly in summer, while conventional air conditioning is often expensive to purchase and operate. Our mobile adiabatic cooling systems from the OKM range reduce room temperature by up to around 10°C, depending on conditions, entirely without refrigerants. The units are mobile on casters and can be operated either via a water tank or a permanent connection.
How adiabatic cooling works
Warm indoor air is passed through water-saturated cooling pads. As the water evaporates, the air draws heat from its surroundings and leaves the unit noticeably cooled, though with a slight increase in humidity of around 2 to 5 percent. Since no refrigerants or closed cooling circuit are required, power consumption is significantly lower than that of a conventional air-conditioning system.
Adiabatic cooling compared with conventional air conditioning
| Criterion | Adiabatic cooling (OKM) | Conventional air conditioning |
|---|---|---|
| Refrigerant | None required | Required, subject to maintenance and reporting requirements |
| Installation | Mobile, ready for immediate use, optional permanent connection | Usually requires permanent installation with piping |
| Power consumption | Low, as only the fan and pump need to be powered | Significantly higher due to compressor operation |
| Humidity | Slightly increased due to evaporation | Usually reduced |
| Mobility | On casters, can be moved flexibly around the building | Stationary |
| Ideal for | Large, well-ventilated halls and workshops | Smaller, enclosed rooms with high cooling requirements |
Our OKM models at a glance
From small workshops to large production halls, we offer suitable power levels. For all models, one tank filling is designed to last approximately one 8- to 10-hour work shift in continuous operation; a permanent connection is optionally available for continuous operation over multiple shifts.
| Model | Airflow | Area | Power consumption | Tank capacity | Noise level |
|---|---|---|---|---|---|
| OKM 05 | 5,000 m³/h | approx. 50 m² | on request | 90 l | 53 to 63 dB |
| OKM 12 | 12,000 m³/h | 80 to 150 m² | 500 W | 70 l | 54 to 63 dB |
| OKM 22 | 22,000 m³/h | 150 to 250 m² | 750 W | 130 l | under 70 dB |
| OKM 30 | 30,000 m³/h | 200 to 400 m² | 1,110 W | 200 l | under 70 dB |
| OKM 48 | 48,000 m³/h | up to approx. 600 m² | 1,200 W | 350 l | 73 to 78 dB |
For particularly large halls, we recommend our most powerful model, the OKM 48, with a range of up to 600 m². The unit also features an integrated UV lamp to reduce microorganisms in the water, automatic refilling via a float valve, and a corrosion-resistant, UV-stabilized plastic housing.
Applications
Our OKM cooling systems are suitable for workshops, warehouses, logistics centers, production and assembly halls, as well as marquee halls and event tents, sports halls, garages and temporary work areas.
Maintenance and water hygiene
Since our cooling systems use a water tank, regular cleaning is important. Without proper care, biofilm, limescale deposits, odors and microorganisms can form in the water circuit. For maintenance, we recommend our probiotic cleaning and care concentrate. It combines conventional cleaning action with beneficial microorganisms that sustainably colonize the cooler surfaces, thereby providing protection against renewed microbial contamination for several days, without disassembling the unit.
| Model | Tank size | Dosage |
|---|---|---|
| OKM 12 | 70 l | 50 ml |
| OKM 22 | 130 l | 100 ml |
| OKM 30 | 280 l | 200 ml |
| OKM 48 | 350 l | approx. 175 to 350 ml |
As a general guideline, use approximately 0.5 to 1 ml of concentrate per liter of tank volume; for heavy soiling, the amount can be doubled.
Try before you buy
Unsure whether a model is suitable for your hall? We offer a one-month trial rental with no obligation, and the rental costs are credited toward the purchase price if you subsequently buy the unit.
Frequently asked questions about adiabatic cooling systems
How much can the room temperature be reduced?
Depending on the outside temperature, humidity and hall size, the temperature can be reduced by up to around 10°C.
Does the cooling increase the humidity in the room?
Yes, the evaporation process increases the humidity by approximately 2 to 5 percent.
How long does one tank filling last?
For our models, one tank filling is designed to last approximately one 8- to 10-hour work shift in continuous operation. For continuous multi-shift operation, a permanent water connection is optionally available.
How often does the unit need to be cleaned?
We recommend regular cleaning with our probiotic care concentrate, which is applied directly via the water tank without disassembly and provides protection against biofilm, limescale and odors for several days.
Can I test a model before purchasing?
Yes, we offer a one-month trial rental with no obligation, which is credited toward the purchase price if you subsequently buy the unit.
Is a refrigerant required for operation?
No, our OKM cooling systems work exclusively with water and evaporation, completely without refrigerants and the associated maintenance and reporting obligations.
