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  1. Applications
  2. Storage and logistics dehumidification
  3. Dehumidification ships' holds

Dehumidifiers protect cargo and ships’ holds

Saving time and maintenance cost through drying

Dehumidifiers of the TTR series: Suitable for offshore applications due to high-stability silica gel rotors

The relative humidity of ships’ holds is always particularly high at sea: It amounts to up to 95 per cent. That is why hygroscopic cargo such as paper and print products, electronic parts, textiles and corn may be damaged. Humidity reduction in ships’ holds is thus the first priority. Not only prior to loading and during transport, but also after cleaning.

There is only one remedy for mould, microbial contamination and corrosion on cargo and ship: to supply constantly dry air with a humidity suitable for the cargo into the ship’s hold. To achieve reliable results, the dehumidification system must have been planned professionally.

Target values for the inside of ships: 40 to 60 per cent humidity depending on the cargo

For storable corn, relative humidity must be 65 per cent, for example. For paper and print products, relative humidity between 40 and 55 per cent is required for the goods to arrive well. To avoid any bacterial growth and lumping, we recommend not to allow any more than 50 per cent humidity. Non-protected steel components of the ships’ holds as well as points where the protective layer has been damaged corrode at 65 per cent humidity and above. The tamper-proof DL data loggers of the Trotec measurement technology range allow precise and reliable monitoring of the required humidity and all other climate values.

The compact mobile desiccant dehumidifiers of the TTR series are the perfect dehumidifiers for offshore conditions in ships. They can also be used for rapid drying of the holds after cleaning with water or sandblasting in the shipyard. It is obvious why they are the perfect solution for such applications: The TTR functional principle with separate supply of process and regeneration air ensures great capacities and economic efficiency. All TTR desiccant dehumidifiers are equipped with washable and reliable high-stability silica gel sorption rotors. The TTR devices have an operation range from -15 to +35 °C. They keep operating even at 100 per cent relative humidity and can be stacked. The mobile TTR devices are available in different performance classes for dehumidification of holds of different sizes: In ships, TTR 200 up to TTR 500 D are often used. Apart from that, TTR stainless steel dehumidifiers are particularly suitable for use in ships and shipyards.

Best for use in ships: Corrosion-resistant stainless steel dehumidifiers

Stationary industrial desiccant dehumidifiers also available as mobile solution with lifting lugs

If larger dryers with a higher dehumidification performance are required for dehumidification in ships, the stationary TTR 800 and TTR 1400 can be equipped with a frame to obtain a mobile solution. There are lifting lugs on the frames so that the dehumidifiers can be easily brought on board for temporary use after cleaning, for example. For hygiene-sensitive cargo, they are also available as stainless steel models.

Which dehumidifier for which hold? Contact us for consultation

The Industrial Services department of the Trotec Group makes the conception of dehumidification in ships or shipyards easy for you: Just contact us so we can find out which dehumidifiers have the right capacity for the dehumidification application in question.

Upon request, we also produce customized desiccant dehumidifiers as special models

Upon request, we will readily produce tailor-made desiccant dehumidifiers as special models “made in Germany” perfectly geared to your needs, e.g.:

  • TTR industrial desiccant dehumidifiers with hygienic design
  • TTR industrial desiccant dehumidifiers for PWIS-free dry air
  • TTR industrial desiccant dehumidifiers with extremely low dew point

Makes use of the possibility of having special models with tailored components for your individual needs planned, designed and manufactured in close consultation with our specialists.
Click here to find out more ...

Further application examples for air dehumidification

  • Dehumidifying & air cleaning in storages

    The Trotec Group provides different dehumidification solutions – from the condensation dehumidifiers of the DH series to the adsorption dryers of the TTR series. Both are available as mobile and stationary versions. We offer the right dehumidification technology for every depot or dispatch warehouse. Innovative measuring devices and data loggers complete the dehumidification concept for storage...

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  • Dehumidification in fertilizer storage facilities

    The production of hygroscopic materials in the chemical industry requires intuition and sure instincts. After all, the substances love water and readily absorb the moisture contained in the ambient air. And this can have disastrous economic consequences. As it binds water, the material starts sticking together and clumping, and may become unusable in the worst case. One example are fertilizers. If...

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  • Dehumidification in wind turbine component depots

    In the construction phase of a wind turbine, the plant’s components are sometimes stored for months in very large depots such as halls or temporary storage tents prior to assembly. To prevent damage caused by corrosion or frost during storage, a sophisticated system for humidity regulation is necessary.

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  • Dehumidification of appliance rooms

    Proper protective equipment and perfectly functioning devices are indispensable for operations by the fire brigade and the THW. Protective suits, hoses and tubes must be absolutely leakproof. Tools such as spreader forceps and bolt cutters have to be in an immaculate condition, just like technical devices such as high-performance fans, cutting torches and headlights. In order to store the whole...

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  • Dehumidification in drying rooms

    In the production of electronic equipment and semiconductors humidity can lead to electrostatic charge. For this reason, sensitive processing steps are being performed in cleanrooms and drying rooms. The mobile adsorption dryers of the TTR series are ideal for these high requirements during dehumidification.

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  • Dehumidification circuit board storages

    When storing printed circuit boards humidity can lead to electrostatic charge and patina formation or corrosion. Particularly suited for dehumidifying the PCB storage space are the mobile adsorption dryers of the TTR series – just as well as for other operating sectors in the electronics and semiconductor production.

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  • Dehumidification dispatch & transport

    In the silo as well as during transport hygroscopic bulk material is endangered by humidity – this holds true for both the chemical and the pharmaceutical industry. Humidity continues to be a problem after production, because the products are mostly packed into damageable cardboard boxes with paper inserts. Therefore, dehumidification also plays a key role for storage, dispatch and transport.

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  • Dry air storage

    The requirements in dry air storage are very much alike in many industries: Bacterial growth on foodstuffs, powders going lumpy, corrosion on metal parts – all can be prevented, when the relative humidity is constantly kept below 50 %. A value of 70 % RH suffices as mould protection. The dehumidifiers of the TTR series along with the matching data loggers represent dehumidification systems which...

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  • Dehumidification in timber yards

    In the past, when storing wood it had been rather a challenge to keep the moisture of furniture wood below the required 9 per cent, for example: If no dehumidifiers are used, seasonal temperature differences and fluctuations in air humidity cause the wood moisture to rise. This considerably affects timber quality and results in problems during processing and even in reject.

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  • Dehumidification in wine cellars

    The different temperatures at which the wines are fermented are usually set by the winemaker via the thermostats integrated in the tanks. But the use of dehumidifiers is still indispensable. If the humidity level is low, particularly red wines can develop in the best way. Furthermore, a drying device is able to fight condensation efficiently. Trotec has a series of high-performance drying devices...

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  • Dehumidifying when storing raw tobacco

    The refinement of raw tobacco is considered a fine art. Far from the major tobacco industry smaller factories produce special mixtures with highly diverse flavours. But here, too, the firms usually have to purchase the raw tobacco, coming from many parts of the world, by container load. And since in most cases the product is not processed all at once, the tobacco leaves have to be stored away...

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  • Carpet cleaning – Dehumidification in the drying room

    So the processes of cleaning and drying should be adapted to the individual fibres and material characteristics of the carpeting. As little as an incorrect drying temperature may already cause damage to the material.

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