EXPERIMENTAL ANALYSIS OF THE INFLUENCE OF FAN SPEED ON FROST GENERATION AND ITS IMPACT ON A HEAT PUMP
DOI:
https://doi.org/10.21134/8d2deh11Palabras clave:
heat pump, frost suppression, defrost, energy efficiencyResumen
The phenomenon of frost on the heat exchanger surfaces penalizes the performance of the heat pump, one of the operating parameters that influences the evaporation temperature, this is transferred to the formation of frost, and its impact is the amount of air passing through the evaporator, in that sense, an air-water heat pump has been experimented at different fan speeds and environmental conditions inside a climatic chamber. The results allow to obtain different parameters to characterize the frost formation process and to make an effective comparison between them. The lower the fan speed, the lower the air flow rate, the lower the heating time, and the higher the number of defrost cycles required for the same environmental conditions. In this way, some correlations could be developed to predict how the frosting process is affected by the fan speed in more conditions that are not tested. The aim is to determine to what level frost formation can be suppressed by achieving different fan speeds whether it is technically and economically feasible and what implications imposes on the heat pump performance.
Referencias
Zhang Q., et al., Techno-economic analysis of air source heat pump applied for space heating in northern China, Applied Energy, 2017, 207: 533-542.
Zhang G., et al. Review of experimentation and modeling of heat and mass transfer performance of fin-and-tube heat exchangers with dehumidification. Applied Thermal Engineering, 2019, 146: 701-717.
Song M., et al., An experimental study on even frosting performance of an air source heat pump unit with a multi-circuit outdoor coil, Appl. Energy, 2016, 164: 36–44.
Zhu, J.H., et al., Developing a new frosting map to guide defrosting control for air-source heat pump units, Applied Thermal Engineering, 2015, 90: 782-791.
Liu S., et al., Developing condensing-frosting performance maps for a variable speed air source heat pump (ASHP) for frosting suppression, Applied Thermal Engineering, 2022, 211: 118397.
Lemmon, E.W., et al., NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 10.0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2018.
Bell, I., et al., Pure and pseudo-pure fluid thermophysical property evaluation and the open-source thermophysical property library CoolProp, Ind. Eng. Chem. Res.2014, 53: 2498−2508
Descargas
Publicado
Número
Sección
Licencia
Derechos de autor 2024 XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias Técnicas del Frío

Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.