Guinness Brewery / Ireland
Planning / Implementation / Main components |
Star Refrigeration Ltd. |
Refrigerant |
Ammonia (NH3) |
System start-up |
2005 |
The Guinness Brewery in Dublin planned to increase the production volume of its world-famous Guinness Stout beer to twelve million barrels per year. The necessary extension of its refrigeration system was handled by Star Refrigeration. |
|
Demands |
The objective was to expand the existing ammonia-glycol refrigeration system within six months, minimising any impact on production. |
Solution |
Star Refrigeration extended the 5 megawatts system up to 8.9 megawatts, which complements the existing facilities perfectly. A new suction side collector and two plate heat exchangers work with gravity feed alongside the four existing shell-and-tube evaporators. The refrigeration specialists installed six additional variable speed drive glycol pumps and increased the condenser capacity. The modernized system now has a refrigeration capacity of 8.9 megawatts at an evaporating temperature of -4.5 degrees Celsius, without noticeably increasing the ammonia refrigerant charge in the system. |
Technical data:
Type of facility |
Central refrigeration system |
Refrigerant |
NH3 |
Refrigerant volume |
8,000 kg |
Refrigerant |
Glycol |
Refrigerant capacity |
8.9 MW |
Refrigerant temperature |
Evaporating temperature: -4.5 C° |
Main components |
Two new compressor units with one screw compressor each, four existing screw compressor packs, suction side collector, plate heat exchangers, condenser, three other variable speed drive glycol pumps |
Special features / Comments |
A computer-based monitoring system optimises all processes and handles the temperature controls. Its efficiency and environmental friendliness earned the project the RAC Cooling Industry Award 2005 for “Installation of the Year.” |
Contact:
Star Refrigeration Ltd.
David Blackhurst
Thornliebank Industrial Estate
Glasgow G46 8JW
United Kingdom
Tel.: +44 (0)141 638 7916
Fax: +44 (0)141 638 8111
E-mail: dblackhurst@star-ref.co.uk
www.star-ref.co.uk