Dynamic Energy Storage in the Building Fabric
This report provides guidance on the use of building fabric as a storage medium for heating and cooling energy transported by circulating air. Particular attention is paid to the use of concrete slabs for storage of free cooling available from low ambient overnight air temperature. This work includes an introduction to the concept of fabric energy storage and a discussion of design considerations. Information is provided on the general performance of the systems in terms of maintaining comfortable temperatures in the occupied space, incorporating the expected variation with key parameters including - thermal mass, thermal linking between the fabric and the circulating air, ventilation rate and climate. The information provided is based on case studies and simulation modeling. Capital and energy consumption/cost data is also provided.
- Paperback | 28 pages
- 210 x 297mm
- 01 Jul 1994
- Bracknell, United Kingdom
- tables, figures, references
Table of contents
Part 1 Systems: system A - exposed slab; system B - faalse floor void, plus partially exposed slab; system C - hollow cores, plus exposed slab. Part 2 Fabric energy storage as a cooling option: performance; external environment; energy consumption; costs - capital costs, energy costs (/annum), maintenance costs (/annum). Part 3 Air supply rate. Part 4 Internal heat gains. Part 5 External heat gains. Part 6 Fan pick-up. Part 7 Thermal performance of the fabric storage element: surface resistance; thermal properties; element thickness. Part 7 Thermal linking. Part 8 Control strategy for night cooling. Part 9 Heat recovery. Part 10 Variable air volume. Part 11 Location. Part 12 Humidity and condensation. Part 13 Design procedure. Part 14 The use of fabric energy storage in conjunction with mechanical cooling. Part 15 Storage of heat energy. Appendices: site A monitoring and modelling (exposed coffered slab); site B monitoring and modelling (false floor void, plus partially exposed troughed slab); site C monitoring and modelling (hollow cores, plus exposed slab); thermal simulation software; surface heat transfer coefficients; thermal properties of concrete; storage efficiency.