Experimental study on electronic expansion valve failure of a R290 room air conditioner during heating-defrosting process

Du, Yijun; Wu, Jiang; Che, Wang; Li, Jinbo

doi:10.1016/j.applthermaleng.2019.114432

Cited by 13 publications

(2 citation statements)

References 30 publications

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“…The foregoing has not been encountered when using hydrofluorocarbon (HFC) and hydrochlorofluorocarbon (HCFC) air conditioners. These phenomena were attributed to 1) the high mass ratio of the oil to refrigerant due to charge reduction and 2) the high refrigerant migration sensitivity due to the low refrigeration share in heat exchangers, relative to that in compressors [32]. A control strategy based on the optimization of the profiles of electronic expansion valves has been proposed to control the migration of refrigerants and lubrication, thereby reducing the probability of oil blockages [33].…”

Section: Challenges Hindering Wider Application Of Propane Heat Pumpmentioning

confidence: 99%

A thermal network model for hydrocarbon heat pump systems: A coupling analysis of configuration, working condition, and refrigeration distribution

Liang

Zhu

Sun

et al. 2022

Energy Conversion and Management

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Section: Challenges Hindering Wider Application Of Propane Heat Pumpmentioning

confidence: 99%

A thermal network model for hydrocarbon heat pump systems: A coupling analysis of configuration, working condition, and refrigeration distribution

Liang

Zhu

Sun

et al. 2022

Energy Conversion and Management

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“…The excess mineral oil distribution in the pipe line of HC-290 system caused the blocking of electronic expansion valve (EEV) at low evaporation temperature. 24 Tyczewski and Zwierzycki 25 carried out the frictional behavior of a compressor piston surface (aluminium and cast iron) using HC-290 with mineral oil. There was no change in frictional behavior while using HC-290 in the place of HCFC-22 and it did not affect the compressors' material tribological properties.…”

mentioning

confidence: 99%

Performance, environment, and cost‐benefit analysis of a split air conditioning unit usingHC‐290 andHCFC‐22

Saravanan¹,

Prabakaran

Sidney

et al. 2021

Env Prog and Sustain Energy

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A widely used hydrochlorofluorocarbon (HCFC) refrigerant HCFC-22 in the split air conditioner (AC) is being phased out in all countries under the Montreal Protocol.Propane (HC-290) is a favorable substitute for HCFC-22. The performance, environment impact and cost-benefit analysis of a split AC unit operated with HCFC-22 and HC-290 has been carried out experimentally under different test conditions prescribed by IS 1391. The results showed that the variation in system performance was more significant for HCFC-22 than for that of HC-290 while varying the refrigerant charge. The experienced optimum charges that represent the maximum coefficient of performance (COP) was varied with the working environment and it was realized that, generally the optimum charge for HC-290 was 50% lesser than that of HCFC-22. The COP of the AC unit with HC-290 was observed to be 5% more than that of HCFC-22. However, the system capacity diminished by 7.8%. The operation of a split AC unit with HC-290 produced up to 15.9% lesser CO 2 emission than that of HCFC-22 under all the test conditions. The use of HC-290 in an existing HCFC-22 split AC system can save up to 12.22% of the life time total cost. Finally, it was inferred that the replacement of HCFC-22 with HC-290 in the split AC unit showed dominance in all aspects such as performance, emission, and life time total cost.

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Experimental Investigation on Off-Design Characteristics of R290 Rolling Piston Compressor

Dai

Qiu

Han³

2021

Arab J Sci Eng

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Experimental study on electronic expansion valve failure of a R290 room air conditioner during heating-defrosting process

Cited by 13 publications

References 30 publications

A thermal network model for hydrocarbon heat pump systems: A coupling analysis of configuration, working condition, and refrigeration distribution

A thermal network model for hydrocarbon heat pump systems: A coupling analysis of configuration, working condition, and refrigeration distribution

Performance, environment, and cost‐benefit analysis of a split air conditioning unit usingHC‐290 andHCFC‐22

Experimental Investigation on Off-Design Characteristics of R290 Rolling Piston Compressor

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