These five hydrocarbon-based chillers

Presents the ability to specify cooling for its new plant, and conscious of the shortcomings DX Direct Expansion (DX) cooling system the client was determined to ensure that any future system should provide the best in the field of energy efficiency, flexibility, reliability and reducing long-term environmental impacts refrigerant HFC gases with a high GWP.

The company's food production at the plant was subject to the CCL (Climate Change Levy) taxes levied in the UK, which is heavily influenced by its cost of production and had to be kept to a minimum. Furthermore, the company was in a very competitive market and, therefore, allowable capital costs envelope for the whole installation was tightly controlled, and is a serious problem, meet specified criteria.

Storage capacity of20 FM 000 MT of the new building consists of refrigerated food preparation areas and various cold chill service operations, which have reduced parameters of the system, which fully satisfy the requirement the specifications of the client. Options considered traditional cooling systems, designed on the DX, which is used refrigerant HFC R-404A or natural refrigerant ammonia (NH3). However, the alternative, which was eventually selected indirect cooling system with propylene as a refrigerant in the chiller.

Because Refrigerants now in accordance with the new European Union F-Gas Regulation in some sectors is now becoming a reluctance to use these synthetic gases due to pressure to ensure their sustainability. In addition, in the perspective of EU Directives imposing increased restrictions on the use of such synthetic refrigerants encourages the industry to further consider the use of secondary engineering systems with refrigerant.

Ammonia (NH3) is considered one of the most effective natural refrigerants are available, but there are some problems. It is toxic and harmful, and therefore sometimes not considered as convenient as CFC/HCFC/HFC. Ammonia systems also have additional requirements (which vary depending on the country) address of the refrigerant in the Flammability.

After careful consideration of all the pros and cons, the choice of indirect system gave a food mill owner (F.W. Mansfield and Son) ability to fulfil the criteria, which they considered important, such as:

• The potential to reduce energy consumption by choosing state-of-the-art chillers - in this case, the standard of hydrocarbon chillers with a COP 3.5 7C output of water and 30C ambient temperature were used, manufactured by Frigadon, Sweden.
• Reduce operating costs compared with DX systems.
• The operation of ecologically clean refrigeration system.
• The possibility of use of natural hydrocarbon refrigerants such as R-1270.
• With five standard hydrocarbon chillers, allowing low charge in the circuit, careful control of temperature and redundancy in case one system stops.
• The possibility of using biodegradable, non-toxic fluids, in the case of food, Hycool fluid was used.
• Minimizing emissions of carbon dioxide.
• The ability to demonstrate an environmental liability system for their clients.

Introduction of hydrocarbon chillers facilitated by the fact that the installer offers a holistic fashion design, with all the necessary requirements to use the system is safe and economical use of energy. Each of the five hydrocarbon chillers has four refrigerant circuits with 5.5 kg R-1270 each. Each block has a cooling capacity of 235 kW at a temperature of 32C (ambient temperature) and from 0 to -4C (brine)...