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<\/a>dehumidifiers 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\u00b0C.<\/p>\nIt 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.<\/p>\n
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 as 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. 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.<\/p>\n Please see details of a few of our dehumidifier models listed hereunder:<\/p>\n 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.<\/p>\n The technical details of the model VAC-PD-300 are as below:<\/p>\n The technical details of the model VAC-PD-600 are as below:<\/p>\n You can read the pdf file of Comparison Sheet of Desiccant Dehumidifiers<\/a> for the detailed comparison of dehumidifiers type.<\/p>\n<\/a><\/p>\nDesiccant dehumidifier for cold rooms<\/h2>\n
<\/a> desiccant dehumidifiers are better options in colder climates but may turn to be a bit expensive than the mechanical ones.<\/p>\nHow to control the humidity inside cold rooms, walk-in cold rooms and walk-in freezers?<\/h3>\n
\nBy 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.<\/p>\nWhy we can’t use normal condensation dehumidifiers for cold rooms, freezers & walk-in chillers?<\/h3>\n
<\/a>By 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.<\/p>\nSpecial condensation\/refrigerant dehumidifiers for cold storages and walk-in-chillers<\/h3>\n
<\/a><\/p>\nModels of dehumidifiers for cold storage rooms<\/h3>\n
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Specifications of Cold storage dehumidifier\u00a0Model VAC-PD-300<\/h4>\n
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Specifications of\u00a0 Cold storage dehumidifier\u00a0Model VAC-PD-600<\/h4>\n
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<\/a> Liter per day.<\/li>\n