Porosity; Self assembly; Heat exchanger; Adsorption; Templating
Ammann Jens, Ruch Patrick, Michel Bruno, Studart André R. (2018), Quantification of heat and mass transport limitations in adsorption heat exchangers: Application to the silica gel/water working pair, in International Journal of Heat and Mass Transfer
, 123, 331-341.
Couck Sarah, Cousin-Saint-Remi Julien, Van der Perre Stijn, Baron Gino V., Minas Clara, Ruch Patrick, Denayer Joeri F.M. (2018), 3D-printed SAPO-34 monoliths for gas separation, in Microporous and Mesoporous Materials
, 255, 185-191.
Radu A.I., Defraeye T., Ruch P., Carmeliet J., Derome D. (2017), Insights from modeling dynamics of water sorption in spherical particles for adsorption heat pumps, in International Journal of Heat and Mass Transfer
, 105, 326-337.
Minas Clara, Carnelli Davide, Tervoort Elena, Studart André R. (2016), 3D Printing of Emulsions and Foams into Hierarchical Porous Ceramics, in Advanced Materials
, 28(45), 9993-9999.
High rates of adsorption and desorption are desirable to deliver large cooling or heating power per unit mass of sorbent in thermally driven heat pumps. However, the sorption speed is limited by the rate of heat and mass transport within the porous material. The simultaneous optimization of both of these parameters is a complex materials challenge. Dense materials tend to exhibit high thermal conductivities but low effective diffusion coefficients of the sorbate. Macroporous materials with pore sizes typically >1 µm feature facile vapor transport and high diffusion coefficients, but have a low sorbate capacity due to low surface area. Micro- and mesoporous sorbents with pore sizes typically <10 nm have larger surface areas, but the sorbate diffusion to this inner surface is slow. Therefore, hierarchical porous materials with tailored porosity at different length scales combine fast transport of vapor with high adsorption capacity.The goal of this sub-project is to design and fabricate hierarchical porous materials that could fulfill the combined fast mass transport and high surface areas required for adsorption heat pump applications.