Reliability evaluation of scroll compressor for system air conditioner

Chang, Mu-Seong; Park, Jong-Won; Choi, Young Cheol; Park, Tae-Kook; Choi, Byung-Oh; Shin, Chang Hoon

doi:10.1007/s12206-016-0912-0

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…where Eff represents the efficiency of the compressor unit; H o is the energy obtained by the natural gas per day (kJ/day), which can be calculated by Equation (17); and H c is the energy consumed by the compressor unit per day (kJ/day), which can be calculated based on the amount of natural gas consumption or power consumption by the compressor unit.…”

Section: For Degradation Failurementioning

confidence: 99%

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A Data-Driven Methodology for the Reliability Analysis of the Natural Gas Compressor Unit Considering Multiple Failure Modes

Zheng²,

Huang

et al. 2022

Energies

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In this study, a data-driven methodology for the reliability analysis of natural gas compressor units is developed, and both the historical failure data and performance data are employed. In this methodology, firstly, the reliability functions of the catastrophic failure and degradation failure are built. For catastrophic failure, the historical failure data are collected, and the rank regression model is utilized to obtain the reliability function of the catastrophic failure. For degradation failure, a support-vector machine is employed to predict the unit’s performance parameters, and the reliability function of the degradation failure is determined by comparing the performance parameters with the failure threshold. Finally, the reliability of the compressor unit is assessed and predicted by integrating the reliability functions of the catastrophic failure and the degradation failure, and both their correlation and competitiveness are considered. Furthermore, the developed methodology is applied to an actual compressor unit to confirm its feasibility, and the reliability of the compressor unit is predicted. The assessment results indicate the significant impact of the operating conditions on the precise forecasting of the performance parameters. Moreover, the effects of the value of the failure threshold and the correlation of the two failure modes on the reliability are investigated.

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Section: For Degradation Failurementioning

confidence: 99%

“…The reliability of a scroll compressor was evaluated in Ref. [17], and its lifetime was estimated by using the data of zero-failure accelerated life testing.…”

Section: Introductionmentioning

confidence: 99%

A Data-Driven Methodology for the Reliability Analysis of the Natural Gas Compressor Unit Considering Multiple Failure Modes

Zheng²,

Huang

et al. 2022

Energies

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“…In order to predict and evaluate the ventilation system quickly and accurately, Liu et al [3] has proposed an improved RNG k-e model, and verified the reliability of the model through simulation. Chang et al [4] adopted failure mode and effect analysis (FMEA) to analyze the failure of scroll compressor for system air conditioning, and evaluated the reliability of scroll compressor through design of experiments (DOE). Mostafa et al [5] studied the reliability of the vapor compression refrigeration system (VCRS) components and optimized the overall reliability of the system by using the reliability block diagram (RBD) method and singleobjective genetic algorithm (GA).…”

Section: Introductionmentioning

confidence: 99%

Air conditioning reliability analysis based on dynamic Bayesian network and Markov model

Xu,

Wang,

Zhou

et al. 2024

Int. J. Metrol. Qual. Eng.

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With the popularization of the air conditioning, its reliability during operation has gradually become a focus of attention. However, due to the uncertainty in the reliability analysis process, the accuracy of the results will be affected. To overcome this challenge, a method for air conditioner reliability analysis combining Dynamic Bayesian Network (DBN) and Markov Model (MM) is proposed. Firstly, orthogonal defect classification (ODC) is used to statistic and analyze the defect data of the air conditioning system, and the network structure of the DBN is determined based on the results of the analysis. Then, the state transfer probability of each node is obtained by MM, and then the reliability, steady state availability, and maintainability of the air conditioning system are analyzed. Finally, the effectiveness of the method is verified by a case study of air conditioning failure data. The results show that the steady state availability of the air conditioning system in this case is 0.996.

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“…However, the time required for climate control system components, including compressors, to reach degraded states under typical field usage is excessively long (Staino, Abou-Eid, Rojas, Fitzgerald, & Basu, 2019). The standard reliability determination test, which is typically used to estimate product life under various accelerated test conditions, also requires a long test time (Chang, et al, 2016). This paper presents a new testing methodology to degrade electric scroll compressor in an accelerated manner to the end of its useful life using controlled continuous liquid slugging at various degrees of refrigerant quality.…”

Section: Introductionmentioning

confidence: 99%

Accelerated Degradation Test on Electric Scroll Compressor Using Controlled Continuous Liquid Slugging

Ramadhan,

Wong,

Bani Milhim

et al. 2023

PHM_CONF

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Refrigerant-based electric scroll compressors are known for their reliability, efficiency, and quiet operation. They are often used in heat pump systems due to their ability to efficiently handle varying levels of load conditions, both for heating and cooling modes of operation. As electric compressors are considered the heart of the heat pump system, being able to determine degradation of compressors prior to failure is of paramount importance for the health of this system. Typical failures for electric scroll compressors range from electrical faults, refrigerant leaks, to mechanical failures and overheating. Specifically, one of the primary failure modes for an electric scroll compressor is mechanical damage due to the high stress effects of refrigerant liquid slugging. These stresses are due to excessively high internal pressures exhibited on the compressor scrolls, which are generated by compressing liquid refrigerant at the suction side of the compressor. This paper provides a new testing methodology that introduces liquid slugging at various degrees of refrigerant quality to degrade a compressor to near the end of useful life. Furthermore, this test aims to determine specific operating conditions and signals that can indicate early compressor degradation. This fault injection configuration consists of a modified heat pump system with the addition of two low pressure heat exchangers added in parallel (with respective electronically controlled expansion valve for each heat exchanger) used to control the refrigerant quality during compressor operations. For a given refrigerant quality, the heat pump system was operated at a fixed compressor performance conditions to sustain liquid slugging for a fixed duration. Afterwards, refrigerant was controlled to be pure vapor at the compressor suction side and the compressor was controlled at several different performance conditions (i.e., fixed compressor suction superheat temperature and compressor pressure ratios, at various compressor speeds), so as to duplicate conditions known to us from the compressor component data sheet for an ideal electric scroll compressor. Through these tests, the results show that the severity of scroll failures depend heavily on the refrigerant quality and the amount of liquid slugging exposure time. Furthermore, symptoms of compressor degradation are detected using the following signals: i) temperature and pressure at the compressor suction side, ii) temperature and pressure at the compressor discharge side, and iii) electric compressor speed and power consumption. To further aid in determining the compressor degradation ground truth, complete compressor teardown was performed to identify sections within the compressor that exhibited significant amounts of wear as compared to a stock compressor.

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Reliability evaluation of scroll compressor for system air conditioner

Cited by 10 publications

References 2 publications

A Data-Driven Methodology for the Reliability Analysis of the Natural Gas Compressor Unit Considering Multiple Failure Modes

A Data-Driven Methodology for the Reliability Analysis of the Natural Gas Compressor Unit Considering Multiple Failure Modes

Air conditioning reliability analysis based on dynamic Bayesian network and Markov model

Accelerated Degradation Test on Electric Scroll Compressor Using Controlled Continuous Liquid Slugging

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