Adsorbent coatings for heat pumping applications: Verification of hydrothermal and mechanical stabilities

作者：Freni Angelo^*; Frazzica Andrea; Dawoud Belal; Chmielewski Stefanie; Calabrese Luigi; Bonaccorsi Lucio

来源：Applied Thermal Engineering, 2013, 50(2): 1658-1663.

DOI：10.1016/j.applthermaleng.2011.07.010

• Adsorption heat pump
• Adsorbent coating
• Hydrothermal stability
• Mechanical stability

This paper presents novel experimental methods for verification of both hydrothermal and mechanical stabilities of adsorbent coatings. Experiments have been carried out on zeolite-based coatings over aluminum substrates, prepared by a dip-coating technique developed at CNR-ITAE. Hydrothermal aging of several adsorbent coatings is ongoing. Adsorption and structural stability of some samples under test was successfully verified after 35000 aging cycles by isobars measurement and XRD analysis. Mechanical properties of coatings have been evaluated by applying different typologies of static and dynamic mechanical stresses. Results obtained have been compared with those achieved by subjecting adsorbent coatings prepared by Mitsubishi Plastic Incorporation (MPI) to the same characterization protocol. The comparison between the two types of coating returned that MPI coatings posses similar thermal stability and better mechanical strength than CNR-ITAE coatings.

• 出版日期2013-2