raw · papers · ingested 2026-06-19
Consolidated CaCl2 / expanded-graphite composite sorbents for sorption refrigeration
Source: https://www.sciencedirect.com/science/article/abs/pii/S0008622306004581
Wang group cluster; paywalled, abstract-sourced.
Key findings
- Consolidated CaCl2-expanded graphite: volumetric cooling capacity ~52% higher than pure CaCl2; SCP ~353% higher than CaCl2 powder (30 C ads / -10 C evap).
- Effective thermal conductivity 7.05-9.2 W/m.K (consolidated) vs 0.3-0.4 W/m.K (powder bed): expanded graphite solves HEAT TRANSFER, not uptake.
- CaCl2/EG-NH3 refrigerator prototype: 11.4 kW refrigerating power, COP 0.27, SCP 422.2 W/kg.
- Note: NH3 working fluid (chemisorption), graphite as conductivity scaffold: illustrates the matrix’s dual roles (capacity vs conductivity).