Experimental performance of carbon dioxide compressor with parallel compression

Bella, B; Kaemmer, Norbert

doi:10.1533/9780857095350.5.231

Cited by 2 publications

(2 citation statements)

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“…Bella and Kaemmer [26] presented the experimental evaluation of a reciprocating prototype working with CO2 with parallel compression. The compressor is a semi-hermetic four cylinders compressor with one compression chamber.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression

Nebot‐Andrés

Sánchez

Calleja-Anta

et al. 2021

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression

Nebot‐Andrés

Sánchez

Calleja-Anta

et al. 2021

Applied Thermal Engineering

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“…An alternative to the system with auxiliary compressor is the one which uses a single compressor with vapour injection at intermediate pressure. This solution was compared experimentally to that with dedicated auxiliary compressor by Bella and Kaemmer (2011). The assessment was conducted ranging the intermediate and the high pressures and keeping the evaporating temperature equal to -10 °C.…”

Section: Introductionmentioning

confidence: 99%

Energy and environmental performance assessment of R744 booster supermarket refrigeration systems operating in warm climates

Gullo

Elmegaard

Cortella

2016

International Journal of Refrigeration

156

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This paper presents a theoretical comparison among different commercial refrigeration systems in terms of annual energy consumption and environmental impact. Eight configurations were studied: a R744/R134a cascade refrigeration system (baseline), a conventional and an improved R744 booster system, two R744 booster solutions with dedicated mechanical subcooling, a R744 booster with parallel compression and two solutions which combined the parallel compression and the mechanical subcooling. The evaluation was based on the weather data in Valencia (Spain) and in Athens (Greece), as well as on the running modes of a conventional European supermarket. A transition zone, which occurred between subcritical and transcritical operations, was adopted.\ud The results showed that all the enhanced configurations may achieve a comparable energy saving to the one of the baseline in both the selected locations. Furthermore, they allow reducing the Total Equivalent Warming Impact (TEWI) by at least 9.6% beside the cascade solution

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The theoretical and experimental research on the thermodynamic process in transcritical carbon dioxide piston compressor

Song

Sun

Yang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part E:

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The general mathematical model of the transcritical CO2 compressor was presented to assess the compressor efficiencies including isentropic efficiency and volumetric efficiency based on the thermodynamic theories and compressor structures. Furthermore, the prototype of the transcritical CO2 system was established and relative measurements were carried out to evaluate the precision of the simulation. Results showed that the volumetric efficiency of the compressor kept decreasing while the isentropic efficiency increased first and then kept almost constant and even declined with the increase in the pressure ratio. Besides, the indicated efficiency and volumetric efficiency declined slightly with the decrease in the suction density corresponding to the increase in suction superheating. As for the effects of compressor structures on the performances, the indicated efficiency increased sharply and then decreased gradually, while the volumetric efficiency kept declining with the increase in the cylinder diameter-to-height ratio, respectively.

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Experimental performance of carbon dioxide compressor with parallel compression

Cited by 2 publications

References 1 publication

Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression

Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression

Energy and environmental performance assessment of R744 booster supermarket refrigeration systems operating in warm climates

The theoretical and experimental research on the thermodynamic process in transcritical carbon dioxide piston compressor

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