Please choose your delivery country and your customer group
Work performed at Brookhaven National Laboratory on Union Carbide Nuclear Division, ORNL contract number 19Y-14279V, Encapsulation of Phase Change Materials (PCM) in Concrete Masonry Construction, is summarized. Due to program termination, the report also constitutes the final report of the program. Thermal analysis of the system Na sub 2 CO sub 3 .10H sub 2 O has shown that after separation upon melting, the heat of fusion is considerably higher than Na sub 2 SO sub 4 .10H sub 2 O. The system NaCO sub 3 -K sub 2 CO sub 3 -H sub 2 O has been found to be unsuitable for PCM use. A eutectic in the MgCl sub 2 -CaCl sub 2 -H sub 2 O is under consideration. It exhibits a high heat of fusion and low transition temperature range. Cylindrical shells have been cast using polymer concrete. The shells were subsequently filled with PCM and thermally cycled. No leaking of PCM occurred. Thermal measurements on PCM composite materials were continued. (ERA citation 05:012071)