Building drying

Dry air is a laboratory phenomenon. Atmospheric air will always contain moisture, often in quantities that prevent natural ventilation from providing an effective answer to drying buildings. Whether it be during construction, after fire or flood damage or even after a period of disuse, moisture will build up within buildings, often with damaging consequences. These problems can be disguised by the use of heat or ventilation (when the weather is occasionally suitable) but are unpredictable, slow, and potentially energy inefficient.

Dehumidifiers are the only method of positively removing moisture in a controllable, efficient manner from a space, and at a speed that can be dictated to suit the application.

During building construction, dehumidifiers can be used to accelerate the rate of drying wet processes such as concrete floors and plaster, not only allowing the construction work to proceed more rapidly, but in a way that ensures the drying will not encourage cracking and distortion. Further, concrete floors that are dried by dehumidifiers will always settle at the correct moisture content.

How a dehumidifier works

Porta-Dry dehumidifiers are fully contained, packaged units which incorporate a fan and a totally CFC-free refrigeration circuit. A fan draws room air through the machine which firstly passes across a refrigerated heat exchanger (evaporator) that cools and allows moisture contained within the air to condense. The cooled, dry air then passes across a warm heat exchanger (condenser) where it is reheated as a result of the dehumidification process, before being returned to the room in a dry, warm state. Moisture removed from the air is collected in a reservoir where it is fed away to waste.

Cost savings

Due to the unique nature of a refrigeration circuit, energy removed from the air during dehumidification process is converted into usable heat. Typically for every 1kW of energy that a dehumidifier consumes, it will give out 2.5kW of heat; by removing the moisture from the air rather than heating it to a high temperature, Porta-Dry dehumidifiers will dry in a gentle and more controllable manner, alleviating possible material shrinkage and cracking problems associated with heating methods.

As well as Dantherm and Calorex mobile products we can also offer Master and Aerial units for rental and general purpose drying. These units come in a range of styles and sizes andf are a great addition to the groups range.

The Dantherm Group manufacture mobile dehumidifiers in a range of sizes to suit any space. Whatever you need, Calorex, Dantherm, Aerial and Master have the solution.

All products are supported by an in-house applications department and nationwide service network.

Associated products

PD 300-600

Porta-Dry dehumidifiers are specifically designed for mobile dehumidification and are built… more

DH 26-92

Highly efficient dehumidifiers designed to for professional rental use. Their robust design… more

AD 740

These units are produced to a high class finish and are used in building and water damage… more

DHP 65

Highly efficient dehumidifiers designed to for professional rental use. Their robust design… more

DH 752-772

Highly efficient dehumidifiers designed to for professional rental use. Their robust design… more

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Contact (UK)

Rae Major

Rae Major

Mobile Equipment
Direct: +44 (0)1275 876 851
Mobile: +44 (0)7391 868 832
Contact Rae

Contact (International)

+44 (0)1621 856 611
International Enquiries

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