SHORT TERM PARAFFIN WAX STORAGE FOR AIR COLLECTOR SPACE HEATING SYSTEMS
A pilot test facility with a low void fraction paraffin wax storage in slab geometry and a large heat transfer surface per unit volume is built and connected to computer controlled physical simulators of the air collector array and the heat distribution system of the dwelling. Measurements in different climatological sequences are performed and a one-dimensional simulation model for a paraffin wax storage validated. The model is shown to have acceptable accuracy for integrated energy balance but not for temperature distribution. The validated model is implemented in the modular simulation program EMGP 2 and a comparative system study of an air collector system for space heating and hot water production with rock bed storage and with paraffin wax storage is performed for three European test reference years. The comparative storage volume reduction factor of a paraffin wax storage equals 2.6 for equal energetic system performance. The volume reduction factor based on the present annual energy cost savings is however only a factor of 2 as compared to a rock bed system with equal present annual energy cost savings.
Bibliographic Reference: EUR 9883 EN (1985) MF, 487 P., BFR 750, BLOW-UP COPY BFR 2435, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989124004600 / Last updated on: 1987-01-01
Available languages: en