Prosper de Mulder
Planning / Implementation / Main components |
Star Refrigeration Ltd. |
Refrigerant |
Carbon dioxide (CO2), secondary refrigerant Ammonia (NH3) |
System start-up |
2003 |
Prosper de Mulder, the UK's largest pet food processor, had a requirement for an efficient plate freezing system to replace the old R-22 system for their pet food production facility in Doncaster, England. |
|
Demands |
Replacement of the old refrigeration plant which used R-22 with a non ozone depleting refrigerant which would not be subject to impending F-gas regulations. |
Solution |
Installation of an environmentally friendly and highly efficient plate freezer system using carbon dioxide as the refrigerant with ammonia condensers. |
Technical data:
Type of facility |
Vertical plate freezer system |
Refrigerant |
CO2 |
Secondary Refrigerant |
NH3 |
No. of refrigeration compressors |
2 |
Refrigerant temperature |
CO2 -50 ºC, NH3 -40 ºC |
Refrigerating capacity |
1,000 kW |
Main components |
Screw compressors, surge drum/pump set, 16 plate freezers |
Special features / Comments |
The main environmental benefit is the low energy consump-tion of this system. The combination of CO2 with pressurized liquid defrost for a plate freezing system is a world first. Freezing times are 75 % of the traditional system and the system is running more efficiently at far lower temperatures without causing excessive power consumption. |
Contact:
Star Refrigeration Ltd.
David Blackhurst
Thornliebank Industrial Estate
Glasgow G46 8JW, UK
Phone: +44 (0)141 638 7916
Fax: +44 (0)141 638 8111
E-mail: dblackhurst@star-ref.co.uk