Characterization of a vapor injection scroll compressor as a function of low, intermediate and high pressures and temperature conditions

Navarro, E.; Redón, A.; Gonzálvez-Maciá, José; Martínez-Galván, I; Corberán, José M.

doi:10.1016/j.ijrefrig.2013.04.022

Cited by 54 publications

(16 citation statements)

References 13 publications

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“…The theoretical suction volume flow rate was defined as the product of the maximum volume of the suction process V disp and the compressor rotation rate N c . The isentropic efficiency was defined as the ratio of the actual compressor power consumption to the power consumption needed for an adiabatic and reversible process from the suction port to the discharge port as shown in Equation (4). The isentropic injection specific enthalpy h inj,isen was defined assuming isentropic compression from the suction state to the intermediate pressure.…”

Section: Mapping Of Resultsmentioning

confidence: 99%

Performance Measurements and Mapping of a R-407C Vapor Injection Scroll Compressor

Lumpkin¹,

Spielbauer

Groll³

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Environmental conditions significantly define the performance of HVAC&R systems. Vapor compression systems in hot climates tend to operate at higher pressure ratios, leading to increased discharge temperatures. Higher discharge temperatures can lead to higher irreversibilities in the compression process, lower specific enthalpies differences across the evaporator, and possibly a reduction in the compressor life due to the breakdown of the oil used for lubrication. To counter these effects, the use of economized, vapor injection compressors is proposed for vapor compression systems in high temperature climates. Such compressors are commercially available for refrigeration applications, in particular, supermarket refrigeration systems.However, compressor maps for vapor injection compressors are limited and none exist for R-407C. Through calorimeter testing, a compressor map for a single-port vapor injection compressor using R-407C was developed. A standard correlation for mapping single-port vapor injection compressors is proposed and validated using the compressor test results. The system and compressor performance with and without vapor injection was considered. As expected, with vapor injection there was a reduction in compressor discharge temperatures and an increase in the system coefficient of performance. The proposed dimensionless correlation is more accurate than the AHRI polynomial for mapping the injection ratio, discharge temperature, and compressor heat loss. The predicted volumetric efficiency values from the dimensionless correlation is within 1% of the measured valued. Similarly, the predicted isentropic efficiency values are within 2% of the measured values.

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Section: Mapping Of Resultsmentioning

confidence: 99%

Performance Measurements and Mapping of a R-407C Vapor Injection Scroll Compressor

Lumpkin¹,

Spielbauer

Groll³

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…This arbitrary expression represent the ideal power consumption of compressor when the refrigerant coming from suction port and injection ports is compressed to the discharge pressure in isentropic process divided by real indicated compressor work. According to Wang, et al, (2009) andNavarro, et al, (2013), based on experimental results, the equation (4) describes suitably the efficiency parameter.…”

Section: Comparative Study Of the Performance Of The Scvi And The Tsrcmentioning

confidence: 99%

“…In addition, the compressor discharge temperature could be controlled below 100°C. Navarro, et al, (2013) analyzed a SCVI working on wide range of operating conditions; the study included a compressor characterization, a comparison of performance with a single-stage compressor of similar volume, and the determination of the influence of the intermediated conditions on the compressor performance.…”

Section: Introductionmentioning

confidence: 99%

Performance of a scroll compressor with vapor-injection and two-stage reciprocating compressor operating under extreme conditions

Tello-Oquendo

Navarro-Peris

Macia

et al. 2016

International Journal of Refrigeration

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ElsevierTello Oquendo, FM.; Navarro-Peris, E.; Gonzálvez Maciá, J.; Corberán Salvador, JM. (2016). Performance of a scroll compressor with vapor-injection and two-stage reciprocating compressor operating under extreme conditions. ABSTRACTThe current paper presents a comparative study between a vapor-injection scroll compressor (SCVI) and a two-stage reciprocating compressor (TSRC) operating under extreme conditions. The present work is divided into two parts: on the first one, both compressors are compared in terms of compressor efficiency, volumetric efficiency, COP, and cooling capacity using R407C refrigerant; on the second part, the seasonal performances of both compressors working in cooling and heating modes are estimated and analyzed. As a result, the SCVI presents better efficiency and COP, compared to TSRC, for pressure ratios below 7.5. This compressor can be used in air conditioning systems and heat pumps, which work under moderate temperature conditions. For higher pressure ratios, the TSRC has better efficiency which subsequently gives higher system COP. This type of compressors can be used in domestic hot water systems operating under severe climates and low temperature freezing systems (under -20°C).

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“…Mathison et al [8] examined the performance limit for economized cycles with continuous refrigerant injection and concluded that implementing a compressor with continuous refrigerant injection would require a much clearer understanding of the physical injection process in the compressor. Other studies have been also reported on refrigerant vapor injection and its applications [9,10]. It is evident that with further development of the vapor injection technology, more relevant applications in the ASHPs can be broadly seen in the near future.…”

Section: Introductionmentioning

confidence: 98%

Performance analysis of a new ejector enhanced vapor injection heat pump cycle

Wang

Xing

2015

Energy Conversion and Management

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Characterization of a vapor injection scroll compressor as a function of low, intermediate and high pressures and temperature conditions

Cited by 54 publications

References 13 publications

Performance Measurements and Mapping of a R-407C Vapor Injection Scroll Compressor

Performance Measurements and Mapping of a R-407C Vapor Injection Scroll Compressor

Performance of a scroll compressor with vapor-injection and two-stage reciprocating compressor operating under extreme conditions

Performance analysis of a new ejector enhanced vapor injection heat pump cycle

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