Natural Freeze-drying of Water-degraded Timber Structures: Feasibility Study
The objectives of this project were: To gather data from a small scale experimental freeze-drying unit, using natural local conditions, with a view to extending the experiment to a larger scale installation sufficient to deal with timbers from archaeological shipwrecks and other timber constructions...
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| Format: | Dataset |
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Australian Antarctic Data Centre
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| Online Access: | https://researchdata.ands.org.au/natural-freeze-drying-feasibility-study/699714 https://doi.org/10.4225/15/55ED1B3E444FB https://data.aad.gov.au/metadata/records/ASAC_156 http://nla.gov.au/nla.party-617536 |
| Summary: | The objectives of this project were: To gather data from a small scale experimental freeze-drying unit, using natural local conditions, with a view to extending the experiment to a larger scale installation sufficient to deal with timbers from archaeological shipwrecks and other timber constructions. The climate of the Vestfold Hills at Davis Base is exceptionally dry and, apart from a short summer period, the temperature is below freezing. The dryness and the low temperature of the area makes it a theoretically ideal location to naturally freeze-dry large water-logged wooden items. A small 2m3 container housing a selection of waterlogged wood has been installed below ground level. Water vapour from the frozen samples is extracted by a wind driven venturi system. Changes in temperature, sample weight, and air pressure are logged and the data are transferred regularly to Canberra. The fields in this dataset are: Date Time Temperature Atmospheric Pressure Ice Weight Wood Weight Windspeed |
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