Advanced phase-change intermediate heat exchanger development for multistage thermoelectric heat pumps
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Gobierno de Navarra//PC066-067-068 Gobierno de Navarra//PC116-117-118
Impacto
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10.1016/j.tsep.2023.102298
Resumen
The need to reach a full energy decarbonisation is well known. Heating and cooling consumption is almost half of the global energy end-use. Thus, development of low-carbon and highly efficient power-to-heat technologies must be developed. In this work, the use of thermoelectric technology working as a heat pump is proposed to heat up an airflow of 38 m3/h. Two different prototypes of multistage t ...
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The need to reach a full energy decarbonisation is well known. Heating and cooling consumption is almost half of the global energy end-use. Thus, development of low-carbon and highly efficient power-to-heat technologies must be developed. In this work, the use of thermoelectric technology working as a heat pump is proposed to heat up an airflow of 38 m3/h. Two different prototypes of multistage thermoelectric heat pumps have been developed and compared based on monophasic and phase-change intermediate heat exchangers. The reduced thermal resistance obtained for the novel phase-change heat exchanger increases the heat flux supplied to the airflow and reduces the consumed power of the system, outperforming the operation of the monophasic thermoelectric heat pump between a 30 and a 67 %. The novel multistage phase-change heat pump obtains experimental COP values between 3.25 and 1.26 when the airflow rises its temperature from 3.5 °C to 23.5 °C. Additionally, this experimental study proves a new methodology to calculate the supplied heat flux to the airflow. The validation of this technology proves a discrepancy of ± 9 % when this novel technology is compared to the conventional one based on the airflow temperature rise. [--]
Materias
Thermoelectric heat pump,
Multistage,
Heat exchanger,
Thermal resistance, COP enhancement
Editor
Elsevier
Publicado en
Thermal Science and Engineering Progress 47, (2024), 102298
Departamento
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
The authors would like to acknowledge the support of the Government of Navarre, as part of the “Grants to SINAI agents for the realization of collaborative R&D projects” under the PC066-067-068 FlexORCStorage projects and PC116-117-118 MASS-STORAGE projects. Open access funding provided by Universidad Pública de Navarra.