Experimental study on CO2/R32 blends in a water-to-water heat pump system

Sun, Zhili; Cui, Qi; Wang, Qifan; Ning, Jinghong; Guo, Jiangfeng; Liu, Yongqiang; Xu, Yinlong

doi:10.1016/j.applthermaleng.2019.114303

Cited by 43 publications

(17 citation statements)

References 30 publications

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“…R744 operates under high pressure, and is highly toxic and flammable [14][15][16]. Following the second generation, third-generation refrigerants were composed of chlorofluorocarbons (CFCs) [17][18][19] and hydrochlorofluorocarbon (HCFCs) [20][21][22], which are easy to use, can operate under low pressure, and are nontoxic. However, they have high GWP and ODP, contributing to ozone depletion and global warming.…”

Section: Introductionmentioning

confidence: 99%

Development of Environmentally - Friendly and Energy Efficient Refrigerant for Medium Temperature Refrigeration Systems

Saengsikhiao¹,

Taweekun²,

Maliwan³

et al. 2020

ARMS

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This research presents the development of environmentally-friendly and energy efficient refrigerant for medium temperature refrigeration systems that new azeotropic refrigerant mixture of hydrofluorocarbons and hydrocarbon that can retrofit in the refrigeration system using R404A. The medium back pressure refrigeration testing standard that follow CAN/ANSI/AHRI540 standard air-conditioning, heating, and refrigeration institute (AHRI) and The properties of refrigerants and refrigeration simulation system that used national institute of standards and technology (NIST) reference fluid thermodynamic and transport properties database (REFPROP) software and NIST vapor compression cycle model accounting for refrigerant thermodynamic and transport properties (CYCLE_D-HX) software. The methodology use decision tree function in datamining by rapid minor software that first of KDnuggets annual software poll that showed new azeotropic refrigerant mixture had cooling capacity, refrigerant effect, GWP and boiling point were lower than R404A but work and pressure for medium temperature refrigeration system of azeotropic refrigerant mixture were higher than R404A. The artificial intelligence (AI) by data mining technic can predictive environmentally-friendly and energy efficient refrigerant for medium temperature refrigeration. The result of refrigerant mixed by R134A, R32, R125 and R1270 and is consistent with the evolution of fourth-generation refrigerants that contain a mixture of HFCs and HCs which are required to produce a low-GWP, zero-ozone-depletionpotential (ODP), high-capacity, low-operating-pressure, and nontoxic refrigerant.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of Environmentally - Friendly and Energy Efficient Refrigerant for Medium Temperature Refrigeration Systems

Saengsikhiao¹,

Taweekun²,

Maliwan³

et al. 2020

ARMS

View full text Add to dashboard Cite

show abstract

“…R744 operates under high pressure, and is highly toxic and flammable (Figure 5) [14][15][16]. Following the second generation, third-generation refrigerants were composed of chlorofluorocarbons (CFCs) [17][18][19] and hydrochlorofluorocarbon (HCFCs) [20][21][22], which are easy to use, can operate under low pressure, and are nontoxic. However, they have high GWP and ODP, contributing to ozone depletion and global warming.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Analysis of Green Refrigerant Zero ODP as an Alternative Refrigerant Lower Cost and GWP

Saengsikhiao

Taweekun

Maliwan

2021

Preprint

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This research presents the results of investigation and analysis of the environmentally friendly refrigerant for R22 replacement. All refrigerant properties in this research were based on results from the REFPROP and CYCLE_D-HX software of NIST under CAN/ANSI/AHRI540. The results of this work show that HCs R170, R290, R600, R600a, R601, R601a, R1150 and R1270 can be mixed in HFCs R417A, R417B, R422A, R422B, R422C, R422D, R424A, R437A, R438A and R453A and able to be further developed in the future. All refrigerants are non-flammable refrigerants, non-toxic and zero ODP. The R453A mixed with HCs R600 (0.6%) and R601a (0.6%) and is COPc refrigerant close to that of R22 refrigerant. In conclusion, it can be used as an environmentally friendly and energy efficiency replacement for R22. All refrigerants are also refrigerants that are matched with the 4th generation refrigerants with the use of natural refrigerants.

show abstract

“…R744 operates under high pressure and is highly toxic and flammable [14][15][16]. Following the second generation, third-generation refrigerants are composed of chlorofluorocarbons (CFCs) [17][18][19] and hydrochlorofluorocarbons (HCFCs) [20][21][22], which are easy to use, can operate under low pressure, and are non-toxic. However, they have high GWP and ODP, contributing to ozone depletion and global warming.…”

Section: Introductionmentioning

confidence: 99%

The Data Mining Technique Using RapidMiner Software for New Zeotropic Refrigerant

Saengsikhiao

Taweekun

2021

ARFMTS

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This research presents the development of environmentally-friendly and energy efficient refrigerant for medium temperature refrigeration systems that new azeotropic refrigerant mixture of hydrofluorocarbons and hydrocarbon that can retrofit in the refrigeration system using R404A. The medium back pressure refrigeration testing standard that follow CAN/ANSI/AHRI540 standard air-conditioning, heating, and refrigeration institute (AHRI) and The properties of refrigerants and refrigeration simulation system that used national institute of standards and technology (NIST) reference fluid thermodynamic and transport properties database (REFPROP) software and NIST vapor compression cycle model accounting for refrigerant thermodynamic and transport properties (CYCLE_D-HX) software. The methodology uses decision tree function in datamining by rapid minor software that first of KDnuggets annual software poll that showed new azeotropic refrigerant mixture had cooling capacity, refrigerant effect, GWP and boiling point were lower than R404A but work and pressure for medium temperature refrigeration system of azeotropic refrigerant mixture were higher than R404A. The artificial intelligence (AI) by data mining technic can predictive environmentally-friendly and energy efficient refrigerant for medium temperature refrigeration. The result of refrigerant mixed by R134A, R32, R125 and R1270 and is consistent with the evolution of fourth-generation refrigerants that contain a mixture of HFCs and HCs which are required to produce a low-GWP, zero-ozone-depletion-potential (ODP), high-capacity, low-operating-pressure, and nontoxic refrigerant.

show abstract

Experimental study on CO2/R32 blends in a water-to-water heat pump system

Cited by 43 publications

References 30 publications

Development of Environmentally - Friendly and Energy Efficient Refrigerant for Medium Temperature Refrigeration Systems

Development of Environmentally - Friendly and Energy Efficient Refrigerant for Medium Temperature Refrigeration Systems

Investigation and Analysis of Green Refrigerant Zero ODP as an Alternative Refrigerant Lower Cost and GWP

The Data Mining Technique Using RapidMiner Software for New Zeotropic Refrigerant

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