Refrigerant charge fault detection and diagnosis algorithm for water-to-water heat pump unit

Samuel Boahen; Kwang Ho Lee; Jong Min Choi

doi:10.3390/en12030545

Refrigerant charge fault detection and diagnosis algorithm for water-to-water heat pump unit

Samuel Boahen, Kwang Ho Lee, Jong Min Choi

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of ±4.5% and ±1.1% in cooling mode and heating mode respectively.

Original language	English
Article number	545
Journal	Energies
Volume	12
Issue number	3
DOIs	https://doi.org/10.3390/en12030545
Publication status	Published - 2019 Feb 10
Externally published	Yes

Bibliographical note

Funding Information:
This research was funded by the Korea Government Ministry of Trade, Industry & Energy [No. 20163010111840]. This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 20163010111840, Development of a high density and capacity geothermal heating and cooling system adopting SCWs for residential cluster homes).

Publisher Copyright:
© 2019 by the authors.

Keywords

Algorithm
Fault detection and diagnosis
Heat pump
Outdoor entering water temperature
Refrigerant charge

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Energy (miscellaneous)
Control and Optimization
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/en12030545

Cite this

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title = "Refrigerant charge fault detection and diagnosis algorithm for water-to-water heat pump unit",

abstract = "Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of ±4.5% and ±1.1% in cooling mode and heating mode respectively.",

keywords = "Algorithm, Fault detection and diagnosis, Heat pump, Outdoor entering water temperature, Refrigerant charge",

author = "Samuel Boahen and Lee, {Kwang Ho} and Choi, {Jong Min}",

note = "Funding Information: This research was funded by the Korea Government Ministry of Trade, Industry & Energy [No. 20163010111840]. This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 20163010111840, Development of a high density and capacity geothermal heating and cooling system adopting SCWs for residential cluster homes). Publisher Copyright: {\textcopyright} 2019 by the authors.",

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AU - Boahen, Samuel

AU - Lee, Kwang Ho

AU - Choi, Jong Min

N1 - Funding Information: This research was funded by the Korea Government Ministry of Trade, Industry & Energy [No. 20163010111840]. This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 20163010111840, Development of a high density and capacity geothermal heating and cooling system adopting SCWs for residential cluster homes). Publisher Copyright: © 2019 by the authors.

PY - 2019/2/10

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N2 - Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of ±4.5% and ±1.1% in cooling mode and heating mode respectively.

AB - Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of ±4.5% and ±1.1% in cooling mode and heating mode respectively.

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KW - Outdoor entering water temperature

KW - Refrigerant charge

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Refrigerant charge fault detection and diagnosis algorithm for water-to-water heat pump unit

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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