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Uploaded on:
13/02/2009 05:50:14
Type:
Digital Asset
File Size:
227.73 KB
Dimensions:
1000 x 757 pixels
2659 views 4 downloads
P number: P000190
Old photograph number: OSLPlate7
Caption: Scottish oil-shale processing 5. Ammonia coolers for the refrigeration of oil used for the extraction of solid paraffin.
Description: Scottish oil-shale processing 5. Ammonia coolers for the refrigeration of oil used for the extraction of solid paraffin. A single cooler is a cast iron casing 20 feet long and 20.5 inches in diameter placed horizontally, containing within a steel tube 15 inches in diameter. The annular space between the two is for the circulation of liquid ammonia from a compressor. In the centre of the inner tube a 4 inch diameter shaft with attached scrapers removes the frozen oil from the cooler. The coolers are typically arranged in banks of four and are capable of cooling 11,000 gallons from 70 degrees F. to 32 degrees F. in 24 hours. The next stage is the filter press.
Date taken: 01/01/1927
Photographer: Unknown
Copyright statement: NERC
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
Orientation: Landscape
Size: 227.73 KB; 1000 x 757 pixels; 85 x 64 mm (print at 300 DPI); 265 x 200 mm (screen at 96 DPI);
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