The special grain cooling units for hot dry countries of the GRANIFRIGOR™ Desert series are performance- and energy consumption-optimised for hot desert climates.

Fields of application

  • Reliable grain cooling in very hot countries - Safe control of air humidity due to HYGROMAT™ automatic
  • Complete suitability and reliable operation even at extremely high outside temperatures due to safety refrigerants
  • Standard medium-pressure version - also ideal for tower silos
Grain cooling at high temperatures

Product overview

Cooling grain in desert regions


  • Storage size 12.000 t
  • Cools 340-560 tons in 24 hours
  • Up to 12,000 tons in 3 weeks
Grain cooling at high temperatures


  • Storage size 25.000 t
  • Cools 650-1100 tons in 24 hours
  • Up to 25.000 tons in 3 weeks


Cooling grain in desert regions

GC 450 Desert

Grain cooling at high temperatures

GC 650 Desert

Storage size upto12.000 t25.000 t
Cooling performance in 24 hours340 – 560 t/Day650 - 1100 t/Day
Refrigerating capacity compressor165 kW320 kW
Volume flow25.000 m 3/h26.000 m 3/h
Pressure maximum6.000 Pa6.000 Pa
Output (average)75 kW105 kW
Max. current consumption215 A300 A
Electrical connection250 A300 A
∅ Connections cold air hose600 mm600 mm
Condensation water runoff average100 l/h150 l/h
∅ Condensation water runoff hose3/4 Zoll3/4 Zoll
With Tyres3.950 x 2.130 x 2.900 mm4.400 x 2.130 x 2.900 mm
With swivelling casters3.740 x 2.130 x 2.690 mm4.200 x 2130 x 2.690 mm
With Tyres3.000 kg3.950 kg
With swivelling casters2.750 kg3.700 kg

Product description

Handling and operation

  • Particularly powerful compressors and large heat exchangers for desert conditions
  • Quiet normal running due to frequency-controlled fans and sound-optimised compressors
  • Different operating modes due to fully automatic Siemens S7 controller: very quiet (whisper mode - often used during the night), rapid cooling (booster mode ), ventilation operation (only air) and normal operation
  • Efficient, large-area filters with integrated filter monitoring
  • Increased safety through counter pressure display
  • Optimal control through viewing windows in the air cooler
  • Effective device protection through integrated phase and undervoltage monitoring
  • Reliable start-up even at low outside temperatures due to four speed-controlled condenser fans
  • Simple and thorough cleaning due to good accessibility, e.g. by heat exchangers with wide fin spacings, housing doors, manholes and inspection openings in the air duct

Energy and environmental balance

  • Economical solution due to low power consumption
  • Energy-efficient design due to frequency controls and the latest motors
  • Environment friendly safety refrigerant - without CFCs and without HCFCs
  • Additional energy savings through winter and summer thermostats
  • Permanent compliance and monitoring of desired cooling air humidity and temperature with HYGROTHERM™
  • Integrated sound insulation

Workmanship and quality

  • HYGROTHERM™ heating coil as standard
  • Robust construction due to stainless steel condensate tray
  • Corrosion protection through coated heat exchangers
  • Extra safe chassis equipment with puncture-proof solid rubber tyres, optionally swivel castors
  • Multi-stage quality control with factory test run
  • Easy maintenance Large, fully panelled doors
  • Robust industrial design
  • Depending on the design, large TÜV-tested refrigerant collectors and subcoolers
  • CE-compliant design


  • High pressure blower (HP) for slimline silo cells
  • Protective grille against animals
  • Parking supports
  • Forklift pockets for easy device transport using a forklift
  • Alarm modem (notification by SMS/email) for permanent monitoring
  • Modem for remote diagnosis/remote display (app, LAN, WiFi/WLAN, GSM)
  • Sound-proof cabin for -15 to -20 dB(A)
  • Additional heating for seeds and/or brewer's malt
  • Rotary field monitoring for effective device protection
  • Signalling light for convenient remote device monitoring
  • Fully automatic cool stop function
  • FrigorTec app


With about 60 years of experience in grain cooling, we have acquired extensive specialist knowledge in all areas. We look forward to bringing this know-how to bear on your grain storage challenges.

Technical and functional merits of a grain cooling unit

How grain coolers work

What you need to keep in mind for setting up grain cooling units

The best cooling strategy for your grain storage method

Protect grain against fungi and pests

How you protect your grain from fungi and pests

Grain cooling units are economical

Economical introduction and operation of grain cooling

Installing, configuring, and operating a grain cooling unit

Commissioning and maintenance of grain cooling devices

Successful cooling strategy for grain, whole grain rice, and white rice

Combining grain coolers for a flexible solution

For conserving grain independent of the weather

Safe storage conditions no matter the weather


  • Fully automatic Siemens S7 controller
  • Remote-controlled operation via FrigorTec app
  • Low power consumption
  • Large area filter
  • Pressure-stable cooling air high pressure fans
  • Rigid, welded frame construction
  • Multi-coated steel parts
  • Partially soundproofed housing UV-resistant external cable
  • Eyelets for lashing on every housing corner
  • Compressor from renowned manufacturer, e.g. Bitzer
  • Many options available
  • Factory test run before delivery
  • Made in Germany

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Our experts will be happy to advise you on the planning and implementation of your projects. Together we will find a perfect customised solution.

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