Author, as appears in the article.: Bellanco, I; Belio, F.; Valles, M.; Gerber, R.; Salom, J.;
Department: Enginyeria Mecànica
URV's Author/s: Bellanco Bellanco, Ivan / Vallès Rasquera, Joan Manel
Keywords: Variable speed Variable refrigerant flow system Valve leakage System Refrigerants Refrigerant flow Pumps Performance Natural refrigerants Mode Heat pumps Heat pump systems Global warming Flow systems Fault effect Fault detection and diagnosis Fault detection Failure analysis Evaporators Energy utilization Diagnostics Common faults
Abstract: The European heat pump market is growing every year as European legislation moves towards the use of natural refrigerants that have less global warming potential than conventional refrigerants. Even though heat pumps are very efficient, the appearance of hard-to-detect faults increases energy consumption. The present study emulated some of the most common faults on a variable-speed heat pump charged with propane. The faults tested were evaporator fouling, compressor valve leakage, liquid line restriction and refrigerant overcharge. The effect of these faults on performance and several heat pump features are described. Evaporator fouling was the fault with least COP degradation and compressor valve leakage with the most (7% and 56% COP reduction, respectively). The results are compared with the results from a comparable study. The heat pump covered the demand generated by nearly all the faults at the expense of increasing the power consumption. The features of each fault are summarized in a chart, which could be used as table for diagnosing faults.
Thematic Areas: Thermodynamics Química Mechanical engineering Materiais Interdisciplinar Engineering, mechanical Engenharias iv Engenharias iii Engenharias ii Ciência de alimentos Building and construction Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: ivan.bellanco@estudiants.urv.cat manel.valles@urv.cat
Author identifier: 0000-0002-0748-1287
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.sciencedirect.com/science/article/pii/S0140700721004114#:~:text=The%20present%20study%20emulated%20some,heat%20pump%20features%20are%20described.
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: International Journal Of Refrigeration-Revue Internationale Du Froid. 133 259-266
APA: Bellanco, I; Belio, F.; Valles, M.; Gerber, R.; Salom, J.; (2022). Common fault effects on a natural refrigerant, variable-speed heat pump. International Journal Of Refrigeration-Revue Internationale Du Froid, 133(), 259-266. DOI: 10.1016/j.ijrefrig.2021.10.017
Article's DOI: 10.1016/j.ijrefrig.2021.10.017
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV