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ML Princess spray head

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In-room high pressure humidifiers

HMF Group optimised production and achieved payback in under one year

Stable humidity transformed paint quality and production efficiency

HMF Group is one of Europe's leading manufacturers of truck-mounted cranes, supplying advanced lifting solutions to customers worldwide. To ensure a durable, high-quality surface finish, the company relies on tightly controlled environmental conditions throughout its paint process.

During the winter months, however, extremely dry indoor air caused serious production challenges. Relative humidity in the paint shop dropped to as low as 7% RH, resulting in poor paint adhesion, inconsistent surface quality and a high reject rate. In one production batch, 21 out of 23 crane arms required rework due to defects caused by the low humidity.

To eliminate these issues, HMF partnered with Condair to install a high-pressure humidification system designed to maintain a stable indoor humidity of approximately 45% RH throughout the year.

The solution immediately stabilised production conditions and virtually eliminated humidity-related paint defects. Consistent humidity now ensures reliable paint quality while reducing waste, rework and production downtime.

Improved product quality with lower operating costs

Beyond improving paint quality, the Condair system also contributes to a more energy-efficient production environment.

By integrating high-pressure humidification into the paint shop, the system provides evaporative cooling that helps offset heat gains from the curing process. This reduces the demand on the ventilation system during the heating season and lowers the building's overall energy consumption.

HMF achieved energy savings of up to 50% on heating and ventilation during winter while significantly improving production consistency. The combined operational savings and quality improvements resulted in a payback period of less than one year.

"Since installing the Condair humidification system, we have experienced virtually no humidity-related painting defects. The system has improved product quality, reduced waste and delivered significant energy savings. It paid for itself in less than a year."

Christian Myrhøj

Production Manager, Paint Department, HMF Group

Condair ML high pressure humidifier

System specifications

Technology: High-pressure humidification system

Pump: MLP 500

Humidification: modules 13 × Princess 2

Capacity: 395 l/h

Target humidity:45% RH

Installation: 2011

Today, HMF benefits from stable year-round humidity control that has virtually eliminated humidity-related paint defects and created a more reliable production process. Reduced scrap, less rework and lower production downtime have improved overall efficiency, while evaporative cooling has cut heating and ventilation energy consumption by up to 50% during winter. Together, these operational and energy savings delivered a payback period of less than one year.

Condair in action

Projects and references

ARoS Aarhus Art Museum, Aarhus

Condair DL hybrid humidifiers ensure optimal indoor humidity at The ARoS Aarhus Art Museum, protecting over 1,100 paintings and 400 sculptures.

Jydsk Aluminium Industri

Jydsk Aluminium Industri installed a Condair adiabatic cooling system to maintain a stable production temperature of 22°C while significantly reducing energy consumption. The solution reduced electricity used for cooling from approximately 350,000 kWh to less than 25,000 kWh per year, while improving employee comfort and ensuring consistent production quality.

TERMA

Terma saves 150,000 kWh annually Terma is an international manufacturer of high-tech equipment for customers within the aviation, defence, space and monitoring system industries. Condair's humidification solution provides free evaporative cooling while offering Terma considerable energy savings. Broad product range meets strict requirements Terma requires excellent air quality and accurate humidity control in its production areas, which e.g.involves protection against electrostatic discharge that may potentially interfere with processes and damage electronic components. Energy savings through evaporative coolingAnother focus area for Terma is the company's energy consumption. Terma has opted for a humidification solution with evaporative cooling for direct room humidification - the absolutely least expensive alternative compared with other humidification systems. Wherever possible in the production areas, Terma is gradually switching to Condair's evaporative cooling and humidification solutions, which has contributed to considerable energy savings. In less urgent areas, or where previously chosen ventilation solutions exist, Terma continues to use Condair's steam humidifiers, which represent the appropriate solution for these particular purposes. Advantages Saves more than 150,000 kWh annually Reduces electrostatic discharges (ESD) Utilises free evaporative cooling Ensures compliance with product tolerances Increases employee well-being System specifications Pumps: MLP 300 with RO Modules: 7 x Princess 2 Capacity: 250 l/h Installed: 2013 "An energy seminar at Condair opened our eyes to new opportunities of reducing our energy consumption through evaporative cooling. At the same time, our indoor climate is now considerably better, which of course is popular with the employees." Terma Facilities, Gert Jorgensen

NRGi

At energy utility NRGi, both staff and visitors notice the effects of a healthier indoor climate and proper air humidity. Discomforts caused by dry mucous membranes, static electricity and dryness of eyes are things of the past. NRGi's iconic office building in Aarhus Nord is characterised by its unique design and vast glass facades. Energy consultant Claus Ankjæro tells how the utility's goal is to ensure the healthiest, most energy-efficient indoor climate possible. Achieving this is impossible without both a ventilation system and humidification. This is also why NRGi has benefited from having a healthy indoor climate both summer and winter since 2015.

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