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Sea trial results show benefits of freezers
Industrial n e w s
Nouvelles de I'industrie to offer its customers this option. boiling point alcohols such as Mike Stanley, Chairman and isopropanol and ethanol creates a Managing Director, said: 'As the highly effective solvent for flux UK's fastest growing refrigeration removal. This non-azeotropic blend contractors, we believe it is essential of chemicals typically contains 25 % to promote these "safe" systems to of the alcohol by weight and as such our customers. Whilst it is not is still non-flammable. possible to offer refrigerant 22 During the cleaning process, systems without some cost implicahowever, the CFC 113 diffuses into tions, in many cases, the actual the atmosphere more quickly than increase is very small'. the alcohol, causing the remaining 'We are also working very closely solvent to become richer in alcohol, with our trade association, the and so pushing up the temperature of Refrigeration Unit Air Conditioning the vapour. In Europe, where these Group of the Heating and Ventinon-azeotropic blends are most lating Contractors' Association, to commonly used, it is the usual promote good practise in the practice to use an automatic cut out handling of refrigeration, ensuring switch on the heating system of the that loss and wastage are kept to a plant to prevent the temperature of minimum'. the mixture posing a potential fire Stanley Refrigeration Limited, risk threat. For example, CFC 113/isopropanUnit 3, Elmdon Trading Estate, ol mixtures are considered flammable Bickenhill Lane, Birmingham at 70°C. Shut down is normally B37 7EZ, UK. triggered at 56°C, to ensure safe working conditions. Similar shut down procedures are used in the distillation of used solvent for recovery. Typically, the residual solvent will contain about 45 % CFC Sea trial results show 113, which is slightly more than with azeotropic blends of the same benefits of freezers chemicals. Chlor-Chemicals, ICI Chemicals Torry research vessel the Lancella and Polymers Limited, PO Box 14, returned home after its 20 day The Heath, Runcorn, Cheshire charter, approving the 15 station WA7 4QG, UK. plate freezer developed by Marine & ............tndmtPud;:. Refrigeration (MIR) Limited. Torry tests resulted in a report on the benefits of this radically new design of freezer. The freezers were on loan to Torry who have been investigating various methods of at-sea fish freezing. The Environmentally safe
refrigeration systems As concern increases about the effect of CFC refrigerants on the Earth's ozone layer, Stanley Cooling and Freezing is offering environmentally safe refrigeration plant as a standard option on all future installations. Stanley will be redesigning many of its refrigeration Systems to use refrigerant R22 which has been proved to be safe. The company is the first major refrigeration contractor
Modular fishfreezingpackage from MIR
trip was the culmination of several years research and development including continuous freeze trials on different products. The MIR 10/15 series plate freezer proved its benefits in operation, engineering and shipbuilding during sea trials. Because the freezers are fitted with roller double skin curtains each side, the freezer trays or frames can be loaded in a straight-through manner. The incoming trays push out the frozen trays, allowing continuous freezing. Wash down is another benefit due to the sea water resistant aluminium and stainless steel construction. Additionally, benefits include controls of the entirely automatic refrigeration plant which can hold a load in the plates overnight to suit work patterns. The only operational control is a single lever to start the hydraulic pump to open or close the plates. Despite all the functionalities, the unit is extremely quiet in operation, being totally clad in acoustic lined stainless steel. Ship spares become much less expensive and more comprehensive because the system operates with a direct expansion refrigerant with a patent pending liquid injection device, maximizing the heat exchange rate. The compressor is rotary vane and very robust considering it is one third . the size of .the, equivalent piston compressor. The high quality marine shell and tube condensors make removal for cleaning easy. Each MIR unit is fully wired with its own control panel and requires only 20kVA 3 phase 415V, 50Hz supply (other voltages available). An equivalent capacity plant on secondary pumped refrigerant would use as much as three times the electrical load. Shipbuilder and vessel installation is designed for flexibility. The freezer installation, removal or resitement can also be accomplished in around four days. Marine & Industrial Refrigeration (Yorkshire) Limited, Unit BT514, Bergen Way, Sutton Fields Industrial Estate, Hull HU8 0XN, UK.
Rev. Int. Froid 1989 Vol 12 Janvier
53
Nouvelles de I'industrie to offer its customers this option. boiling point alcohols such as Mike Stanley, Chairman and isopropanol and ethanol creates a Managing Director, said: 'As the highly effective solvent for flux UK's fastest growing refrigeration removal. This non-azeotropic blend contractors, we believe it is essential of chemicals typically contains 25 % to promote these "safe" systems to of the alcohol by weight and as such our customers. Whilst it is not is still non-flammable. possible to offer refrigerant 22 During the cleaning process, systems without some cost implicahowever, the CFC 113 diffuses into tions, in many cases, the actual the atmosphere more quickly than increase is very small'. the alcohol, causing the remaining 'We are also working very closely solvent to become richer in alcohol, with our trade association, the and so pushing up the temperature of Refrigeration Unit Air Conditioning the vapour. In Europe, where these Group of the Heating and Ventinon-azeotropic blends are most lating Contractors' Association, to commonly used, it is the usual promote good practise in the practice to use an automatic cut out handling of refrigeration, ensuring switch on the heating system of the that loss and wastage are kept to a plant to prevent the temperature of minimum'. the mixture posing a potential fire Stanley Refrigeration Limited, risk threat. For example, CFC 113/isopropanUnit 3, Elmdon Trading Estate, ol mixtures are considered flammable Bickenhill Lane, Birmingham at 70°C. Shut down is normally B37 7EZ, UK. triggered at 56°C, to ensure safe working conditions. Similar shut down procedures are used in the distillation of used solvent for recovery. Typically, the residual solvent will contain about 45 % CFC Sea trial results show 113, which is slightly more than with azeotropic blends of the same benefits of freezers chemicals. Chlor-Chemicals, ICI Chemicals Torry research vessel the Lancella and Polymers Limited, PO Box 14, returned home after its 20 day The Heath, Runcorn, Cheshire charter, approving the 15 station WA7 4QG, UK. plate freezer developed by Marine & ............tndmtPud;:. Refrigeration (MIR) Limited. Torry tests resulted in a report on the benefits of this radically new design of freezer. The freezers were on loan to Torry who have been investigating various methods of at-sea fish freezing. The Environmentally safe
refrigeration systems As concern increases about the effect of CFC refrigerants on the Earth's ozone layer, Stanley Cooling and Freezing is offering environmentally safe refrigeration plant as a standard option on all future installations. Stanley will be redesigning many of its refrigeration Systems to use refrigerant R22 which has been proved to be safe. The company is the first major refrigeration contractor
Modular fishfreezingpackage from MIR
trip was the culmination of several years research and development including continuous freeze trials on different products. The MIR 10/15 series plate freezer proved its benefits in operation, engineering and shipbuilding during sea trials. Because the freezers are fitted with roller double skin curtains each side, the freezer trays or frames can be loaded in a straight-through manner. The incoming trays push out the frozen trays, allowing continuous freezing. Wash down is another benefit due to the sea water resistant aluminium and stainless steel construction. Additionally, benefits include controls of the entirely automatic refrigeration plant which can hold a load in the plates overnight to suit work patterns. The only operational control is a single lever to start the hydraulic pump to open or close the plates. Despite all the functionalities, the unit is extremely quiet in operation, being totally clad in acoustic lined stainless steel. Ship spares become much less expensive and more comprehensive because the system operates with a direct expansion refrigerant with a patent pending liquid injection device, maximizing the heat exchange rate. The compressor is rotary vane and very robust considering it is one third . the size of .the, equivalent piston compressor. The high quality marine shell and tube condensors make removal for cleaning easy. Each MIR unit is fully wired with its own control panel and requires only 20kVA 3 phase 415V, 50Hz supply (other voltages available). An equivalent capacity plant on secondary pumped refrigerant would use as much as three times the electrical load. Shipbuilder and vessel installation is designed for flexibility. The freezer installation, removal or resitement can also be accomplished in around four days. Marine & Industrial Refrigeration (Yorkshire) Limited, Unit BT514, Bergen Way, Sutton Fields Industrial Estate, Hull HU8 0XN, UK.
Rev. Int. Froid 1989 Vol 12 Janvier
53