Experimental investigation on heating performance of gas-injected scroll compressor using R32, R1234yf and their 20wt%/80wt% mixture under low ambient temperature

Xu, Shuxue; Fan, Xiusong; Ma, Guoyuan

doi:10.1016/j.ijrefrig.2017.01.010

Cited by 43 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To ensure that the heating performance of the system is relatively high under the condition of low temperature, there are two key parameters for the system: the optimal location of the vapor injection inlets and the most suitable vapor injection pressure, both the two parameters were derived from experiment and calculation suggested by Xu et al [10]. Equation (1) was used to calculate the most suitable vapor injection pressure.…”

Section: Vapor Injection Heat Pump System (Vi System)mentioning

confidence: 99%

“…They stated that a reduction in the cooling capacity of 6% to 13% approximately was noted using R1234yf instead of R134a. Xu et al [10] developed an integrated gas-injected scroll compressor heat pump system using R1234yf, R32 and its binary mixtures as a working fluid, and the results showed that a R1234yf/R32 mixture can run at an evaporating temperature of −20 °C, and it has the highest heating COP value between R1234yf and R32.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study on R1234yf heat pump at low ambient temperature and comparison with other refrigerants

Niu

2019

THERM SCI

Self Cite

View full text Add to dashboard Cite

Original scientific paper https://doi.org/10.2298/TSCI171019201XIn this paper, an integrated vapor injection compression heat pump system using R1234yf, R32, R410A, R22, and R134a as working fluids was developed, and their heating performances under low ambient temperature were quantitatively evaluated. An experimental bench was built to test the system's working performance. The condensing temperature, evaporating temperature, power input, and other variables were analyzed to evaluate the system's heating capability and energy efficiency. Test results showed that the R1234yf system can run at the evaporating temperature of -20 °C, but its heating coefficient of performance was 5% lower than R134a. The R1234yf vapor injection system provided very significant performance improvements for heating performance compared with no vapor injection: the heating capacity and heating coefficient of performance can be improved by 14. 3% and 11.7%, respectively.

show abstract

Section: Vapor Injection Heat Pump System (Vi System)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study on R1234yf heat pump at low ambient temperature and comparison with other refrigerants

Niu

2019

THERM SCI

Self Cite

View full text Add to dashboard Cite

show abstract

“…R404A is an azeotropic blend of 143a/125/134a with zero ODP, and is nonflammable, nontoxic, and operates under low pressure, but has a GWP of 3922 [52]. R407A [53], R407F [54], R407H [55], R410A [56], R442A [57], R448A [58], R449A [59], R452A [60], R453A [57], and R463A [50] were developed to be retrofitted to replace R404A, and are mixed with HCs, HFOs, R134A, and R32. This is similar to the refrigerant that was developed for R22 and R134A but does not include R463A, which is being presented as a refrigerant for comparative purposes in this research as it is composed of R744 (carbon dioxide), which is a natural refrigerant similar to R445A [61] and R455A [62].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Analysis of R463A as an Alternative Refrigerant to R404A with Lower Global Warming Potential

et al. 2020

View full text Add to dashboard Cite

This research presents the development of R463A refrigerant, a nonflammable refrigerant that was retrofitted to replace R404A. R463A is primarily composed of hydrofluorocarbons/hydrocarbons/carbon dioxide (HFCs/HCs/CO2), and has global-warming potential (GWP) of 1494. It is a nonazeotropic mixture of R32 (36%), R125 (30%), R134a (14%), R1234yf (14%), and R744 (6%). R463A is composed of polyol ester oil (POE), and it is classified as a Class A1 incombustible and nontoxic refrigerant. R463A has a higher cooling capacity (Qe) than that of R404A, as it is composed of hydrofluorocarbons (HFCs) R32 and carbon dioxide (CO2) R744, and has lower GWP than that of R404A due to the use of hydrofluoroolefins (HFOs) from R1234yf. The results of this research showed that R463A can be retrofitted to replace R404A due to its composition of POE, Class A1 incombustibility, and lower toxicity. The properties of R463A and R404A, as analyzed using 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, are in accordance with the CAN/ANSI/AHRI540 standards of the Air-Conditioning, Heating, and Refrigeration Institute (AHRI). The normal boiling point of R463A was found to be higher than that of R404A by 23%, with a higher cooling capacity and a 63% lower GWP value than that of R404A. The critical pressure and temperature of R463A were found to be higher than those of R404A; it can be used in a high-ambient-temperature environment, has higher refrigerant and heat-rejection effects, and has lower GWP than that of R404A by 52% due to the HFOs from the R1234yf component. The cooling coefficient of performance (COPc) of R463A was found to be higher than that of R404A by 10% under low-temperature applications. R463A is another refrigerant option that is composed of 7% carbon dioxide (CO2), and is consistent with the evolution of fourth-generation refrigerants that contain a mixture of HFCs, HFOs, HCs, and natural refrigerants, which are required to produce a low-GWP, zero-ozone-depletion-potential (ODP), high-capacity, low-operating-pressure, and nontoxic refrigerant.

show abstract

“…In these studies, the improvements in COP, capacity, and the extension of the work map of the systems are quantified (Ma et al, 2003;Ma and Chai, 2004;Ma and Zhao, 2008;Wang et al, 2009b;Navarro et al, 2013). Other studies have focused on the control and optimization of the system (Wang et al, 2009a and2009c;Xu et al, 2011b;Cho et al, 2012;Roh and Kim, 2011), and the use of different refrigerants in vapor-injection cycles (Feng et al, 2009;Xu et al, 2013aXu et al, , 2013bXu et al, and 2017. Moreover, the SCVI characterization methodologies have addressed by Winandy Nevertheless, scroll compressors have a fixed built-in volume ratio, which is determined by the scroll geometry.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the performance of a vapor-injection scroll compressor and a two-stage scroll compressor working with high pressure ratios

Tello-Oquendo

Navarro-Peris

Gonzálvez-Maciá

2019

Applied Thermal Engineering

View full text Add to dashboard Cite

show abstract

Experimental investigation on heating performance of gas-injected scroll compressor using R32, R1234yf and their 20wt%/80wt% mixture under low ambient temperature

Cited by 43 publications

References 25 publications

Experimental study on R1234yf heat pump at low ambient temperature and comparison with other refrigerants

Experimental study on R1234yf heat pump at low ambient temperature and comparison with other refrigerants

Investigation and Analysis of R463A as an Alternative Refrigerant to R404A with Lower Global Warming Potential

Comparison of the performance of a vapor-injection scroll compressor and a two-stage scroll compressor working with high pressure ratios

Contact Info

Product

Resources

About