– Humidity problems solved in cold stores

Munters ice dry in cold stores

In smaller cold stores used by laboratories, catering facilities and restaurants, the naturally high relative atmospheric humidity is often the cause of problems.

These chill and cold stores are high traffic areas with frequent door opening. Subsequently warmer air constantly penetrates into the room, causing the relative atmospheric humidity to rise.

In laboratories, evaporation from Petri dishes and test tubes also occurs, which is often unwelcome due to the risk of condensation forming in the tubes as well as the need to provide the incubated cultures with air.

Where a cold or chill room is used for the storage of vegetables and meat for example, more moisture is brought into the room and the relative atmospheric humidity increases. Refrigeration of warm products in the room also further increases condensation.

When cold surfaces are surrounded by moist air, water vapour will condense on the surface. A typical example is a cold beer glass in the summertime. The problems are resolved by dehumidifying the air so that condensation and subsequent mold and fungus growth do not occur. The need for defrosting is reduced in low temperature cold stores as forming of frost on the evaporators is reduced. Thereby, unwelcome temperature variations caused by defrosting are avoided.


Munters dehumidifierMunters IceDry® desiccant dehumidifiers are specially designed for installation in cold stores and freezer systems and is a Food Technology and Health & Safety Award-winning system.

The unit can be installed either outside or within the actual store as it excels in functioning independently of the ambient air temperature – in contrast with cooling dehumidifiers which work at reduced capacity from approximately + 15°C. This also makes dehumidification within freezer departments a possibility. 


Munters has created a complete concept for small cold and chill stores. The solution requires no adjustment to be made to the construction of the building and the dehumidifier itself can be placed within or outside the cold room. Similarly, adjustment and readings of the current relative atmospheric humidity in the store can take place in the same place as temperature readings.



SMAC distributer for Munters in Africa

Six cold stores at the University of Copenhagen provide storage and cultivation of algae cultures in nutrient-rich water for research and educational purposes. Previously, problems were experienced with mold and fungus growth on walls, curtains and test tubes and the labels became illegible. Six Munters’ dehumidifiers were fitted outside the cold stores, blowing the dehumidified air into the rooms. The relative atmospheric humidity is now kept constant and the above mentioned problems are avoided.



Catering centres

Cold room Munters IceDry unit

At Novo Nordisk’s training facility at Hvidøre in Klampenborg, a cold store is used for storage of homemade products and for maturing meat. The desire here is to purchase whole animals for maturing in order to ensure optimal quality, however the hung animals began to spoil prematurely due to excessively high relative atmospheric humidity. Munters installed a smaller dehumidifier in the actual cold store, which now ensures that the relative atmospheric humidity remains and that the meat matures under correct hygienic conditions.


Cold Stores

Cold room Munters IceDry unit

Condensation control in larger coldstores is a common application for Munters. Ice and frost is caused when moist air enters the cold store. When it comes into contact with cold surfaces such as floors, walls and evaporator coils the water vapour in the air condenses to form water then freezes to form ice. If the cold store has a loading dock, it may remain as condensate but will result in wet floors and surfaces.

Cold store case study:  Munters IceDry® dehumidification unit improves operation and safety at Coldstar by instantly redirecting dry air to the required areas. Read more … 


Munters IceDry® key features:

– Specially developed for cold store installation
– Automatic defrosting function
– Increased efficiency of evaporators
– Safer cold stores, no slippery floors
– Reduced need for defrosting cold store
– No ice on products, secures the quality of frozen goods
– Less mechanical failures, reduced maintenance costs


Not sure how to select the size of the correct dehumidifier for my cold room or cold store? Contact a Munters Specialist at SMAC Enterprises today for advice and pricing on the best suited Munters desiccant dehumidifier unit for your application.


SMAC ENTERPRISES: info@airtreatment.co.za

SMAC distributer for Munters in Africa

We are sole distributors in South Africa representing Munters AirTech, we assist clients throughout South Africa: Gauteng, Cape Town, Durban, Port Elizabeth, East London, Bloemfontein etc as well as the entire Southern Africa region. We supply both commercial and industrial Munters dehumidifiers for all industries and applications that have humidity problems.