he activity reported in the present deliverable concerns the overall development of the sorption module and the custom heat pump that represent the cascade unit within SolBio- Rev project, whose main aim is to guarantee an efficient operation of the heat pump for delivery of comfort conditions in Mediterranean climates even during the warmest months. The sorption module is based on the patented Fahrenheit technology for in-situ crystallization of the sorbent. The process was optimized by UNIME by focusing on the calcination step. To this aim an experimental campaign was carried out to assess mechanical, chemo-physical and adsorption performances of samples with different calcination processes. A new washing treatment procedure in a Pd-based catalyst based bath was evaluated, to allow not only an higher template removal but also a reduction in the calcination temperature or time with considerable optimization both in adsorber performance and manufacturing costs. Results indicated that new procedure allows both to maximize the adsorption performance of the coating and to limit the maximum calcination temperature (with relative reduction of the cost of the process). A further campaign was carried out, aimed to evaluate the effect of a thermal treatment at 340 °C for different times in an oxygen environment (and not hydrogen environment as Pd based treatment approach). The purpose is to favor the calcination of the zeolite at lower temperatures, compared to the current standard of the Fahrenheit partner, and with better performances in terms of adsorbed water vapor. The proposed sample treatment allows to increase the maximum water uptake from 25.9% up to 33.8%, almost similar to pure SAPO-34 powder (34.1 %). This maximizes the sorption capacity of the coated HEX for the sorption module.

SolBio-Rev Deliverable 2.3 - Cascade chiller with heat pump

Valeria Palomba;Andrea Frazzica;Angelo Freni;Fabio Costa;Davide La Rosa;Luigi Calabrese;Elpida Piperopoulos;
2023

Abstract

he activity reported in the present deliverable concerns the overall development of the sorption module and the custom heat pump that represent the cascade unit within SolBio- Rev project, whose main aim is to guarantee an efficient operation of the heat pump for delivery of comfort conditions in Mediterranean climates even during the warmest months. The sorption module is based on the patented Fahrenheit technology for in-situ crystallization of the sorbent. The process was optimized by UNIME by focusing on the calcination step. To this aim an experimental campaign was carried out to assess mechanical, chemo-physical and adsorption performances of samples with different calcination processes. A new washing treatment procedure in a Pd-based catalyst based bath was evaluated, to allow not only an higher template removal but also a reduction in the calcination temperature or time with considerable optimization both in adsorber performance and manufacturing costs. Results indicated that new procedure allows both to maximize the adsorption performance of the coating and to limit the maximum calcination temperature (with relative reduction of the cost of the process). A further campaign was carried out, aimed to evaluate the effect of a thermal treatment at 340 °C for different times in an oxygen environment (and not hydrogen environment as Pd based treatment approach). The purpose is to favor the calcination of the zeolite at lower temperatures, compared to the current standard of the Fahrenheit partner, and with better performances in terms of adsorbed water vapor. The proposed sample treatment allows to increase the maximum water uptake from 25.9% up to 33.8%, almost similar to pure SAPO-34 powder (34.1 %). This maximizes the sorption capacity of the coated HEX for the sorption module.
2023
Istituto di Tecnologie Avanzate per l'Energia - ITAE
Rapporto intermedio di progetto
heat pump
sorption chiller
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/516429
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