Development of a tube-based elastocaloric regenerator loaded in compressionDallʹOlio, Stefano (Avtor) Ahčin, Žiga (Avtor) Žerovnik, Andrej (Avtor) Kabirifar, Parham (Avtor) Brojan, Miha (Avtor) Tušek, Jaka (Avtor) elastocaloric effectshape memory alloysbucklingelastocaloric regeneratorfatigue lifecoolingheat pumpsIn recent years, devices based on the elastocaloric effect (eCE) have emerged as one of the most promising alternatives to vaporcompression cooling and heating systems. After a brief overview of elastocaloric materials and elastocaloric devices developed to date, this paper reviews our recent activities in the development of tube-based elastocaloric regenerators loaded in compression. These include the evaluation of novel elastocaloric thermodynamic cycles, the characterization of the elastocaloric and fatigue behavior of Ni–Ti tubes, the thermo-hydraulic evaluation of a tubebased geometry to be applied as an elastocaloric regenerator, the buckling analysis of Ni–Ti tube in compression, and finally the development, numerical modeling, and testing of a tube-based elastocaloric regenerator in both cooling and heat-pumping modes. The developed regenerator shows a durable operation with more than 300,000 cycles, a maximum temperature span of more than 31 K at zero thermal load, and a heating power of more than 60 W at a temperature span of 10 K using only 13.7 g of elastocaloric material. In addition, further improvements of the tube-based elastocaloric regenerators related to a lower thermal mass of the regenerator’s housing are shown and discussed.20242024-09-10 10:04:38Članek v reviji161359sl