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Buffermetry

Status and current activity

Abstract

Introduction

Fundamentals of moisture buffering

Properties of hygroscopic materials

Diffusion enhanced materials and structures

Experimental: Sorption experiments

Experimental: Diffusion experiments

Diffusion rate discussion

Incorporating the buffer in the construction

Whole room simulations and experiments

Experiment in the Passys environmental room

Whole building considerations

Conclusions

Acknowledgements

Appendices - instruments and procedures
Tinman instructions and results

Bibliography and references


Page for discussion


Wiki howto

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Current tex

Passus cell description

Proposal for development of unfired perforated brick as a humidity buffer in museum stores and archives, and possibly in exhibition halls.

1. How to make a 4m high wall of unfired bricks, attached to a wall in concrete or fired brick. The usual cavity wall building practice needs modification to take account of the weakness of the unfired bricks and the difficulty of gluing them together. (see article by Walker in the bibliography).

2. Develop a nice looking surface which is porous to water vapour. It must smooth over the perforations while allowing enough vapour penetration that the large internal surface area of the bricks is brought into play.

3. Work out a building design which gives a natural indoor temperature about 5C above ambient, to reduce the average indoor RH to around 55%. Consider using ground heat and solar heating.

4. Consider an alternative RH control by under-dimensioned dehumidification backed by RH buffering from the bricks.

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Page last modified on August 29, 2010, at 09:54 PM