Grain cooling equipment

Grain cooling with FrigorTec GmbH cooling units provides natural conservation of grain, corn, rice, paddy and oilseeds.
Since 1963, the grain cooling unit GRANIFRIGOR ™ has been manufactured at FrigorTec and successfully used in over 70 countries for many years. The GRANIFRIGOR™ process was developed by FrigorTec GmbH (formerly product devision of Axima and Sulzer Escher Wyss) in co-operation with the Dusseldorf University and the Bundesforsc-hungsanstalt fur Getreide (Federal Grain Research Institute) in Detmold and since 1963 manufactured..

Why should corn be cooled?
Spontaneous heating of the grain often causes great damage. Systematic hygiene regulations and the call for natural treatment of the produce grain without chemical substances are standards that must be attained. We have an answer for all these demands: GRANIFRIGOR™. The GRANIFRIGOR™ cooling device is used to cool down grain immediately after the harvest, independent of the weather. This effective method prevents the spoiling of freshly harvested grains, which heats up spontaneously due to its cellular respiration. Carbon dioxide, water and heat are released by this respiration – with extensive consequences: Loss of dry substance as well as the development of insects, microbes and mildew. Spontaneous heating depends on the grain's moisture and temperature. The principle is also valid for oil seeds such as rapeseed. Since we know how grain “functions”, the GRANIFRIGOR™ operates according to two successful principles:

1. Prompt cooling to below +13 °C once the grain has been stored in: This puts insects into diapause so that they have no chance to multiply (see illustration below). Additionally the development of mildew is effectively prevented, respiration losses are minimised, and drying expenditures are also reduced by the drying effect of the cooling.
2. No ventilation with non-conditioned outside air: Grain seeds are hygroscopic. This means that depend-ing on the temperature an equilibrium develops bet-ween the moisture content of the seeds and the relative humidity of the ambient air. Moisture develops if dry grain is exposed to humid air. The grain begins to spoil. Therefore aeration by fans is completely dependent on the weather. Furthermore, the ambient temperature during harvest time is usually much too high.

Mode of operation:
The fan of a GRANIFRIGOR™ grain cooler draws in the sur-rounding air (see illustration below). This air is cooled by an air conditioner (evaporator) to the desired temperature. The following HYGROMAT ™ unit warms the cold air again automatically. This lowers the relative humidity and adapts to the conditions of the bulk grain. No moisturizing can occur, which would be rather damaging. This cooled and dried air is fed through the air distribution of the warehouse or the silo system and is forced through the grain. The air is then released to the outside through the exhaust vents of the storage facility. The outgoing air extracts the absorbed heat and moisture.
Nowadays, the series has 14 sizes, which are calculated for different cooling performance 16-730 t / day.

Nowadays, the series has 14 sizes, which are calculated for different cooling performance 16-730 t / day. Below you will find the descriptions of the Europe and Tropic units.