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

Product overview


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


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


GC 450 Desert

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 over 55 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.

FrigorTec Tandem Luftanschluss

How grain coolers work


The best cooling strategy for your grain storage method

FrigorTec GRANIFRIGOR™ Raiff Niedersachsen

How you protect your grain from fungi and pests

Economical introduction and operation of grain cooling

Commissioning and maintenance of grain cooling devices

Combining grain coolers for a flexible solution

Safe storage conditions no matter the weather

Advantages with FrigorTec grain cooling units

FrigorTec grain cooling units are based on a sophisticated modular system and offer the following features:

  • Fully automatic Siemens S7 controller
  • Remote-controlled operation via FrigorTec app
  • Rigid, welded frame construction
  • Partially soundproofed housing UV-resistant external cable
  • Eyelets for lashing on every housing corner
  • Pressure-stable cooling air high pressure fans
  • Filters for the cooling air supplied to the grain
  • Compressors, for example from Bitzer/Germany
  • Multi-coated steel parts
  • All FrigorTec grain coolers are "Made in Germany" and complete a factory test run before delivery.

Arrange a consultation appointment

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

Arrange an appointment