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Quick freezing technology for fruit
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the industry-previews-research • the industry-previews-research the industry Maintenance-free cryopump compressor CTI-Cryogenics is introducing Model 8500, its first three year maintenance-free cryopump compressor. The 8500 is the first of CTI-Cryogenics' new Series 8000 product line. The 8500 compressor blends today's technology with fieldproven components to give reliability and high productivity. For the Model 8500 compressor, the most reliable components were selected based on substantial field experience. Currently CTI-Cryogenics users are accumulating an estimated 10 million hours of operation each month. This experience has led to a product which users can be confident will need no maintenance for three years, a level of reliability long sought by high-vacuum users. The new compressor is compatible with all CTI-Cryogenics products now in use. It can be retrofitted to the thousands of
Quick freezing technology for fruit Raspberries in many of the desserts appearing on UK meal tables this Winter will have come from Scotland's Tay Valley. And this year, much of the crop from the UK's prime raspberry growing area has been frozen using the latest liquid nitrogen technology from Air Products Limited. Out of a total 12 000 ton crop from the 30 square mile area to the North of Dundee, the best 10% of the fruit are individually quick frozen using Cryo Quick liquid nitrogen food freezing units. They are supplied to m a n u f a c t u r e r s of fruit pies, yoghurt, cheesecakes, etc. where it is important to have a whole,
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existing CTI systems world-wide, or can be specified with new systems purchased. Other key features of the Model 8500 compressor are: its small footprint (19.25 x 21 in); up to three Cryo-Torr ® eight high vacuum pumps can be operated from one Model 8500 compressor; the remote start-stop capability enables users to control the compressor and the pumps from a user-selected remote location; and it is suitable for world-wide power requirements. In addition, all Series 8000 pro ducts are backed by GUTS ®, CTICryogenics' unique 1 h rapid response support programme. Through GUTS (guaranteed up- Model8500 three year maintenance-free t i m e s u p p o r t ) , if any h ~ h cyropump compressor vacuum system goes down, users call a free 24 h a day service. A vacuum system expert answers the telephone and works tion within an hour to get a part, through the problem with the pump or a service technician on client, usually solving it on the the way to get the system up and spot. In the few cases where a running. (CTI-Cryogenics, 266 telephone solution is impossible, Second Avenue, PO Box 9171, CTI-Cryogenics guarantees acWaltham, MA 02254-9171, USA)
undamaged, top quality fruit. Air Products Cryo Quick freezers, four of which are in operation in the Dundee area, comprise a bath of liquid nitrogen the depth of which is microprocessor controlled for efficiency and e c o n o m y - and a tunnel in which the liquid nitrogen vaporizes, still at -196°C and passes over the raspberries which are moving through the machine the whole time on a conveyor belt. The raspberries emerge frozen at -20°C at the rate of up to 4 ton h -1. Air Products freezing techniques offer the advantage over more conventional blast freezing methods that the fruit can be individually quick frozen (IQF). Fresh fruit is frozen solid and
remains separate, sustaining little damage through formation of large ice crystals, thus avoiding drip loss on thawing which can result in flavour, colour and aroma draining away. During a complete season, the four 52 ton liquid nitrogen tanks that serve the freezing machines are kept charged by road tankers, supplying the fruit buying companies with some 2000 tons of liquid nitrogen in total. The freezing technology and the machines themselves are adaptable for other food products: vegetables, fruit, fish and even whole meals can be handled to produce top quality food perfectly preserved. (Air Products Limited, Hersham Place, Molesey Road, Walton-onThames, Surrey KT12 4RZ, UK)
the industry-previews-research • the industry-previews-research the industry Maintenance-free cryopump compressor CTI-Cryogenics is introducing Model 8500, its first three year maintenance-free cryopump compressor. The 8500 is the first of CTI-Cryogenics' new Series 8000 product line. The 8500 compressor blends today's technology with fieldproven components to give reliability and high productivity. For the Model 8500 compressor, the most reliable components were selected based on substantial field experience. Currently CTI-Cryogenics users are accumulating an estimated 10 million hours of operation each month. This experience has led to a product which users can be confident will need no maintenance for three years, a level of reliability long sought by high-vacuum users. The new compressor is compatible with all CTI-Cryogenics products now in use. It can be retrofitted to the thousands of
Quick freezing technology for fruit Raspberries in many of the desserts appearing on UK meal tables this Winter will have come from Scotland's Tay Valley. And this year, much of the crop from the UK's prime raspberry growing area has been frozen using the latest liquid nitrogen technology from Air Products Limited. Out of a total 12 000 ton crop from the 30 square mile area to the North of Dundee, the best 10% of the fruit are individually quick frozen using Cryo Quick liquid nitrogen food freezing units. They are supplied to m a n u f a c t u r e r s of fruit pies, yoghurt, cheesecakes, etc. where it is important to have a whole,
166
Cryogenics 1987 Vol 27 March
existing CTI systems world-wide, or can be specified with new systems purchased. Other key features of the Model 8500 compressor are: its small footprint (19.25 x 21 in); up to three Cryo-Torr ® eight high vacuum pumps can be operated from one Model 8500 compressor; the remote start-stop capability enables users to control the compressor and the pumps from a user-selected remote location; and it is suitable for world-wide power requirements. In addition, all Series 8000 pro ducts are backed by GUTS ®, CTICryogenics' unique 1 h rapid response support programme. Through GUTS (guaranteed up- Model8500 three year maintenance-free t i m e s u p p o r t ) , if any h ~ h cyropump compressor vacuum system goes down, users call a free 24 h a day service. A vacuum system expert answers the telephone and works tion within an hour to get a part, through the problem with the pump or a service technician on client, usually solving it on the the way to get the system up and spot. In the few cases where a running. (CTI-Cryogenics, 266 telephone solution is impossible, Second Avenue, PO Box 9171, CTI-Cryogenics guarantees acWaltham, MA 02254-9171, USA)
undamaged, top quality fruit. Air Products Cryo Quick freezers, four of which are in operation in the Dundee area, comprise a bath of liquid nitrogen the depth of which is microprocessor controlled for efficiency and e c o n o m y - and a tunnel in which the liquid nitrogen vaporizes, still at -196°C and passes over the raspberries which are moving through the machine the whole time on a conveyor belt. The raspberries emerge frozen at -20°C at the rate of up to 4 ton h -1. Air Products freezing techniques offer the advantage over more conventional blast freezing methods that the fruit can be individually quick frozen (IQF). Fresh fruit is frozen solid and
remains separate, sustaining little damage through formation of large ice crystals, thus avoiding drip loss on thawing which can result in flavour, colour and aroma draining away. During a complete season, the four 52 ton liquid nitrogen tanks that serve the freezing machines are kept charged by road tankers, supplying the fruit buying companies with some 2000 tons of liquid nitrogen in total. The freezing technology and the machines themselves are adaptable for other food products: vegetables, fruit, fish and even whole meals can be handled to produce top quality food perfectly preserved. (Air Products Limited, Hersham Place, Molesey Road, Walton-onThames, Surrey KT12 4RZ, UK)