Simple methods to measure air exchange rates and detect leaks in display and storage enclosures
| Main Authors: | , , , |
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| Format: | Book Chapter |
| Language: | English Slovak |
| ISBN: | ISBN 1-84407-253-3 |
| Online Access: | http://www.viks.sk/chk/14tmh_62.doc |
| Abstract: | SUMMARIES. Industry-standard measurement techniques of air exchange using tracer gas decay have been adapted for use with low cost gas detectors and portable tracer gas delivery systems. The experimental and practical application has led to the production of a recommended protocol and data analysis spreadsheet freely available on the Internet. Using these tools it is relatively simple to calculate the air exchange rates of display cases, picture frames and storage units. A range of leak detection equipment has been evaluated to support the use of low air exchange enclosures as an important preventive conservation tool. CONCLUSIONS. Since experimentation began, we have undertaken over 100 individual AER measurements for pollution research, display and storage enclosure installations and for detector comparisons. We have shown that the AER of enclosures, an important factor for preventive conservation, can be easily calculated using low cost gas detectors. By using a combination of leak detectors and AER measurements during enclosure installation, performance specifications are more likely to be met or any defects rectified more readily. Where compliance with a performance specification is required for contractual purposes, an independent validation of a sample of enclosures is still recommended. It is encouraging that several manufacturers of display cases have expressed an interest in using the test methods, and it is hoped the adoption of these techniques by manufacturers and clients during prototyping, fabrication and installation will ensure greater compliance in the future. |
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| ISBN: | ISBN 1-84407-253-3 |
