Temperature control control of automated crop storage.
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The function of heaters and evaporatorsº in storage systems for potatoes, onions or other crops, is to add or remove energy from the internal air.

Heaters, evaporators (for cooling), and the innovative Vacc Tek, to control the temperature of your facility.

The function of heaters and evaporatorº is to raise or lower the temperature of your produce, and that of the internal air in your facility; this is achieved by adding or removing heat from the internal air.

º Cooling systems have two parts:

1. The evaporators, where the refrigerant is evaporated in the evaporators and during this process extracts heat from the area to be cooled. (extracting heat)
2. The condenser, or compressor, where the evaporated refrigerant is compressed (condensed) back into liquid. (generating heat)
Therefore the evaporators are inside and the condenser or compressor is outside the facility.

This principle is the bases of the efficiency of the Vacc Tek.

potato box storage with the evaporators for cooling  hanging from roof

Box-stored potatoes, with a suction system, and evaporators (for cooling) hanging from the roof.

onion box storage with the evaporators for cooling  hanging from roof

Box storage facility, with a pressure system, and evaporators (for cooling) hanging from the roof.

potato bulk storage with the evaporators for cooling  hanging from roof

Bulk storage facility, with the evaporators for cooling hanging from the roof.

Onion storage with heaters directing the warm air directly into the intake of the turbines.

Heaters directing the warm air directly into the intake of the turbines.

Potato storage with heaters directing the warm air directly into the intake of the turbines.

Heaters directing the warm air directly into the intake of the turbines.

A Vacc Tek system being mounted. A condense dryer for onion crops in humid and hot climates

A Vacc Tek system being mounted. Vacc Tek is the latest in climate control for crop storage. Since it directly regulates the relative humidity within the storage facility, it has a tremendous drying capacity. This is especially useful for long-term storage of onions.

For more on Vacc Tek, see: Drying onions in different climates and Vacc Tek.

Agrovent BV provides a large range of air heaters.

Using air heaters in combination with the Multiserver can provide optimal results for drying and heating your produce.

  1. Propane gas air heaters
  2. Diesel air heaters

Propane gas air heaters are switched on and off in a modulated manner.

The modulated method is preferred since the gas pressure is gradually controlled, resulting in the correct temperature at all times.

The relation between heat (warmth) management and the science of drying and climate control.

Normally these heating and cooling units are bought locally and connected to the Multiserver, which controls them with a simple open or closed connection.

º The evaporator works the opposite of the condenser, here refrigerant liquid is converted to gas, absorbing heat from the air in the compartment.


To mechanise your post harvest processes:
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