Project

  • Almaza City Center

  • Customer name: Grundfos Egypt – CCC & HAC contractors

  • Date of commissioning: July 2019

mall
cooling
pressure maintenance

Performance parameter

  • Output: Chiller plant 36 MW, ETS1 10.2 MW, ETS2 6.8 MW, ETS3 7.1 MW, ETS4 6.7 MW

  • System pressure: 5 bar

  • Temperature: 6–12°C

  • System volume: Cooling unit 576 m3, ETS1 163 m3, ETS2 109m3, ETS3 114m3, ETS4 107 m3  

Task

  • Supplying HVAC items for the cooling circuit

  • Due to the system size a special pressurisation system was required

Product solution

Dynamic pressurisation

  • 4x Variomat Giga control unit GS1.1

  • 4x Variomat Giga hydraulic unit GH 50

  • 3x Variomat Giga primary vessels GG2000

  • 1x Variomat Giga primary vessel GG3000

  • 1x Variomat Giga control unit GS 3

  • 1x Variomat Giga hydraulic unit GH 90

  • 1x Variomat Giga primary vessel GG4000

  • 1x Variomat Giga secondary vessel GF4000 

Air and dirt separation

  • 10x Exvoid air separators High Cap A350 HC

  • 1x Exvoid air separator High Cap A500 HC

Expansion vessels

  • 8x Reflex expansion vessels DE 1000/16 bar

  • 1x Reflex expansion vessel DE 3000/16 bar

Achieved goals

  • The high performance Variomat Giga ensures reliable pressurisation

  • The Exvoid air separators remove circulating free air and gas bubbles from the system and thus prevent noise, corrosion and performance degradation due to formation of larger air inclusions.

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