Case Studies >> project
 
     


  Lundbeck Pharmaceuticals  
  
Planning / Implementation / Main components Star Refrigeration Ltd.
Refrigerant Ammonia (NH3)
System start-up 2001

The Danish pharmaceuticals group Lundbeck Pharmaceuticals operates a medicine-manufacturing plant in Seal Sands, England. Star Refrigeration assisted the company with extending its production capacity.

Demands

Lundbeck Pharmaceuticals needed to expand its capacity due to increasing demand. The production processes require very specific temperature patterns, with temperatures varying widely from -85 to 260°C. Therefore, a refrigeration solution was required that is both high-performance and environmentally friendly.

Solution

Star Refrigeration developed two custom air-cooled ammonia systems with a modular design that minimized onsite assembly and start-up, and that each supply one circuit with cold energy. The regular 5°C temperature cycle chills 400 m³ of the coolant Therminol D12 per hour, with a refrigeration output of 1,400 kW. The low-temperature cycle chills 50 m³ Therminol D12 to -25°C, with a refrigeration output of 220 kW. Both cycles use soundproof screw compressors and high-performance fully welded plate and shell evaporators, which allows for minimizing the ammonia charges.



Technical specifications:
Type of facility air-cooled ammonia plant
Refrigerant NH3
Refrigerating volume 700 kg
Secondary refrigerant Therminol D12
Refrigerating capacity 1.4 MW + 220 kW
Refrigerants volume 400 m³ + 50 m³
Main components Soundproof screw compressors, fully welded plate and shell evaporators, air cooled condensers, tanks for the liquid coolant
Special features / Comments The refrigeration systems are equipped with accumulator tanks for the liquid coolant, which ensures the compressors do not short-cycle and facilitates maintenance. Star Refrigeration equipped the system with state-of-the-art controls and ammonia detectors. The plant's modular structure allows for easy and cost-effective extensions.


Contact:

Star Refrigeration Ltd.
David Blackhurst
Thornliebank Industrial Estate
UK-Glasgow G46 8JW

Phone: +44 (0)141 638 7916
Fax: +44 (0)141 638 8111
E-mail: dblackhurst@star-ref.co.uk