Cold Link Africa January/February 2021 | Page 23

INCORPORATING COLD CHAIN

PROJECT

-9 ° C and 0 ° C suction conditions . It also uses heat reclaim to supply a portion of the building ’ s hot water requirements . The plant includes the following components :

• evaporators

• refrigerant piping

• plate heat exchangers

• secondary pumps

• wiring and controls

The plant comprises a three-stage ammonia system with six reciprocating compressors and two evaporative condensers . Heat recovery is done from the discharge gas . There is pumped overfeed to the low-stage and glycol secondary cooling on the high-stage . From an execution point of view , the main challenge was been trying to coordinate between multiple services that have to do installations in an existing building . Building Information Modelling ( BIM ) has been of great assistance in minimising the number of clashes .

The plant comprises a threestage ammonia system with six reciprocating compressors and two evaporative condensers .

“ The challenges forced us to be innovative around pipe-routing and optimising the layout of the plant room in the space that was made available to us ,” Kriel adds . “ Not only is the client satisfied with the solution and the installation , the quality of workmanship has left them very impressed .” The heat recovery from the plant is also proving sufficient to provide the entire site with sufficient hot water for all domestic requirements .

LIST OF PROFESSIONALS :

CLA

A close-up of the accumulator valve stations .

Project name : Project Makhi Owner

Dr Oetker Developer Dr Oetker Architect / Designer Capex Projects

The remote panel pods .

Project manager

Consulting engineer

Contractors

Compressors Condensers Evaporators NH3 Pumps Glycol + CHW Pumps Insulation Valves Vessels Electrical Panels

Capex Projects

Grasso / GEA BAC HC Hermetic Grundfos Intertherm & Moz Insulation Danfoss & Herl Viola IMC