Dehumidifier for Cold Storage Rooms

Dehumidifiers for cold storages and walk-in cold rooms reduce the humidity inside such rooms. Cold storage probably won’t appear as though it would be affected by humidity issues. All things considered, everything is frozen, right? The cold truth is that humidity can be a major issue in cold storage facilities, which can create a wide range of issues. Humidity control in storage zones and cold storage is key to dispensing product harm and keeping up a safe workplace.

Cold storage rooms such as meat storage, pharmaceutical storage, food storage, storage of fruits and vegetables, etc. need to maintain certain humidity levels. The challenge in such environments is that condensation dehumidifiers freeze up, requiring us to do a manual de-icing of them to make them work. Condensation Walk in freezer dehumidifier TTR400Ddehumidifiers work in the principle of condensing the atmospheric moisture content. However, this will not work when the temperature of the room and the intake air is lower than approximately 10°C.

It is possible to do de-icing of dehumidifiers so that it can work at low temperatures. However, it is laborious to do this de-icing of the dehumidifiers. There are dehumidifiers having auto anti-icing systems that shut the compressor off if ice is detected, and thereby stopping the dehumidification process itself. And many models are also having a heating facility so that it can work continuously. It turns out to be a higher investment without the value of having a dehumidifier in colder climates or extremely cold rooms.

Dehumidifier Capacity Calculation

Desiccant dehumidifier for cold rooms

One way to overcome this challenge is to invest in a dehumidifier that works by absorption and not mechanically requiring it to heat the condenser coil. The absorption dehumidifiers which are known asCold storage dehumidifier TTR500D desiccant dehumidifiers are better options in colder climates but may turn to be a bit expensive than the mechanical ones.

How to control the humidity inside cold rooms, walk-in cold rooms and walk-in freezers?

Desiccant dehumidifiers take the intake air and pass through a rotary disc consisting of an adsorbent like silica gel. For this reason, it is also known as a rotary dehumidifier. The intake air is processed and converted into two streams of air viz. wet air and dry air. The dry air is recirculated within the same area and the wet air is to be thrown out of the room. Thus the moisture is removed out of the room through the wet air. The silica gel works for 2-3 years after which it needs to be replaced.
By principle in the condensation types, there is only one intake and one outlet airflow. The outlet airflow is dry air since the moisture content has been converted into water. But in desiccant type, there is one intake and two outlet airflow.

Why we can’t use normal condensation dehumidifiers for cold rooms, freezers & walk-in chillers?

Cold room dehumidifier TTR200By principle, condensation is cooling down the air and during this process, the moisture content of the air is converted into water. However in a cold environment, whether it is inside a cold room, chiller or in extreme winter conditions, the air is already cold and it is not possible to further cool down the air to convert the moisture content into the water. Hence the economically viable option is to use desiccant dehumidifiers in such areas.

Special condensation/refrigerant dehumidifiers for cold storages and walk-in-chillers

We supply special types of condensation type dehumidifiers manufactured by Calorex, UK. These models are PD-300 and PD-600 having special defrost features so that they can work in cold storages as well. If ice forms on the coils, the defrosting circuit gets actives and melts the same. Hence we can use these in cold storages above zero Deg C. However we cannot use these units below zero Deg C.

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Models of dehumidifiers for cold storage rooms

Please see details of a few of our dehumidifier models listed hereunder:

  1. Specifications of Cold storage dehumidifier Model VAC-PD-300

    Calorex-cold-storage-dehumidifier

    These are under the brand name Porta-dry dehumidifiers by Calorex. These are portable heavy duty machines. They are suitable for cold storages, walk-in cold rooms, cold rooms etc.

    The technical details of the model VAC-PD-300 are as below:

    1. It has a maximum dehumidification capacity of 53 Liter per day.
    2. The dehumidification capacity at 20°C ambient temperature and 70%RH is 31 Liter per day.
    3. The dehumidification capacity of this dehumidifier for cold storages at 20°C ambient temperature and 80%RH is 46 Liter per day.
    4. It has an airflow of 380 Cubic Meter per hour.
    5. It has two models in terms of power supply. The model AX takes power supply of 230V, 50Hz Single Phase. ALX models are dual voltage options at 230V & 110 V, 50 Hz, Single Phase.
    6. The dimension of this model of cold storage dehumidifier is 82 cm x 51 cm x 48 cm.
    7. The weight of the unit is 45 kg.
  2. Specifications of  Cold storage dehumidifier Model VAC-PD-600

    The technical details of the model VAC-PD-600 are as below:

    1. It has a maximum dehumidification capacity of 100 Liter per day.
    2. The dehumidification capacity of this dehumidifier for cold storages at 20°C ambient temperature and 70%RH is 46Calorex-walk-in-chiller-dehumidifier-UAE-Saudi-Oman-Qatar-Bahrain-Kuwait-Nigeria-Kenya-Tanzania Liter per day.
    3. The dehumidification capacity at 20°C ambient temperature and 80%RH is 70 Liter per day.
    4. It has an airflow of 750 Cubic Meter per hour.
    5. It has two models in terms of power supply. The model AX takes power supply of 230V, 50Hz Single Phase. ALX models are dual voltage options at 230V & 110 V, 50 Hz, Single Phase.
    6. The dimension of this model of cold storage dehumidifier is 102 cm x 63 cm x 58.5 cm.
    7. The weight of the unit is 65 kg.

You can read the pdf file of Comparison Sheet of Desiccant Dehumidifiers for the detailed comparison of dehumidifiers type.

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In the Middle East, we supply dehumidifier for cold storages, walk-in cold rooms and freezer rooms in the United Arab Emirates, Kingdom of Saudi Arabia, Oman, Qatar, Bahrain, Iraq, Lebanon, Syria, Egypt, Jordan, Libya, Tunisia, etc.
In Africa, we supply dehumidifier for cold storages, walk-in cold rooms and freezer rooms in countries including Kenya, Algeria, Tanzania, Djibouti, Chad, Ghana, Rwanda, Uganda, Nigeria, Ethiopia, Morocco, Angola, South Africa, etc.

Also, we supply dehumidifier for cold storages, walk-in cold rooms and freezer rooms  in India, Bangladesh, Pakistan, Afghanistan, Kazakhstan, Srilanka, Maldives, and Cyprus.