| Title | Empowering CO2 Eco-Refrigeration With Colossal Breathing-Caloric-Like Effects in MOF-508b |
|---|---|
| ID_Doc | 8465 |
| Authors | Gelpi, M; García-Ben, J; Rodríguez-Hermida, S; López-Beceiro, J; Artiaga, R; Baaliña, A; Romero-Gómez, M; Romero-Gómez, J; Zaragoza, S; Salgado-Beceiro, J; Walker, J; Mcmonagle, CJ; Castro-García, S; Sanchez-Andújar, M; Señarís-Rodríguez, MA; Bermúdez-García, JM |
| Title | Empowering CO2 Eco-Refrigeration With Colossal Breathing-Caloric-Like Effects in MOF-508b |
| Year | 2023 |
| Published | |
| Abstract | Today, approximate to 20% of the electric consumption is devoted to refrigeration; while, approximate to 50% of the final energy is dedicated to heating applications. In this scenario, many cooling devices and heat-pumps are transitioning toward the use of CO2 as an eco-friendly refrigerant, favoring carbon circular economy. Nevertheless, CO2 still has some limitations, such as large operating pressures (70-150 bar) and a critical point at 31 degrees C, which compromises efficiency and increases technological complexity. Very recently, an innovative breathing-caloric mechanism in the MIL-53(Al) compound is reported, which implies gas adsorption under CO2 pressurization boosted by structural transitions and which overcomes the limitations of stand-alone CO2. Here, the breathing-caloric-like effects of MOF-508b are reported, surpassing by 40% those of MIL-53(Al). Moreover, the first thermometry device operating at room temperature and under the application of only 26 bar of CO2 is presented. Under those conditions, this material presents values of Delta T approximate to 30 K, reaching heating temperatures of 56 degrees C and cooling temperatures of 10 degrees C, which are already useful for space heating, air-conditioning, food refrigeration, and freezing applications. |
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