Unilever / Czech Republic
Planning / Implementation / Main components |
Bohemiachlad spol. s.r.o. |
Refrigerant |
Ammonia (NH3) |
System start-up |
2003 |
Unilever, one of the world’s largest vendors of everyday consumer goods, needed to expand the production capacity at its Czech headquarters near Prague. The contractor Bohemiachlad built a refrigeration system that uses the natural refrigerant ammonia. |
|
Demands |
Unilever needed to increase the refrigerant capacity up to 3 MW at short notice for the extended production. The aim was to minimise the refrigerant charge while maximising the cooling output. |
Solution |
Bohemiachlad installed a central dry expansion ammonia system with a refrigerant volume of just 100 kilograms in circuit of one plate heat exchanger. The secondary refrigerant is chilled by the heat exchangers. The refrigerating system chills cold water from 10°C to 3°C. The refrigerant evaporating temperature is about 0°C, and the condensation temperature is 35°C. The plant has a refrigerating capacity of 3 MW, making it one of the largest systems with dry expansion in Europe. |
Technical data:
Type of facility |
Dry expansion ammonia system |
Refrigerant |
NH3 |
Refrigerant volume |
100 kg |
Secondary refrigerant |
Chilled water |
Refrigerating capacity |
3 MW |
Main components |
3 screw compressors controlled by 3 frequency converters, 3 plate heat exchangers, 2 condensers |
Special features / Comments |
All of the processes are monitored and centrally controlled by a computerised control system. |
Contact:
Bohemiachlad spol. s.r.o.
Josef Šrámek
Možného 17
CZ-16100 Prague 6
Czech Republic
Phone: +420 274 773 546
Fax: +420 274 773 546
E-mail: info@bohemiachladpraha.cz