Numerical evaluation of ejector-assisted mechanical compression systems for refrigeration applications

Mansour, Ridha Ben; Ouzzane, Mohamed; Aidoun, Zine

doi:10.1016/j.ijrefrig.2014.04.010

Cited by 48 publications

(21 citation statements)

References 27 publications

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“…Mansour et al [153] compared a conventional vapor-compression refrigeration system, a boosted assisted ERS and a combined CERS at fixed evaporation, condensation and boiling temperatures. Considering nominal conditions of cooling capacity equal to 5 kW, the boosted ERS and the cascade CERS show interesting performance: the compression ratio substantially decreased with work decreasing early by 24% and 35%, respectively.…”

Section: Tablementioning

confidence: 99%

Ejector refrigeration: A comprehensive review

Besagni

Mereu

Inzoli

2016

Renewable and Sustainable Energy Reviews

407

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a b s t r a c tThe increasing need for thermal comfort has led to a rapid increase in the use of cooling systems and, consequently, electricity demand for air-conditioning systems in buildings. Heat-driven ejector refrigeration systems appear to be a promising alternative to the traditional compressor-based refrigeration technologies for energy consumption reduction. This paper presents a comprehensive literature review on ejector refrigeration systems and working fluids. It deeply analyzes ejector technology and behavior, refrigerant properties and their influence over ejector performance and all of the ejector refrigeration technologies, with a focus on past, present and future trends. The review is structured in four parts. In the first part, ejector technology is described. In the second part, a detailed description of the refrigerant properties and their influence over ejector performance is presented. In the third part, a review focused on the main jet refrigeration cycles is proposed, and the ejector refrigeration systems are reported and categorized. Finally, an overview over all ejector technologies, the relationship among the working fluids and the ejector performance, with a focus on past, present and future trends, is presented.

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Section: Tablementioning

confidence: 99%

Ejector refrigeration: A comprehensive review

Besagni

Mereu

Inzoli

2016

Renewable and Sustainable Energy Reviews

407

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“…(11)(12)(13) the ideal velocity at the end of the ideal mixing process in the mixing chamber (V 4i ) can be expressed as:…”

Section: Mixing Process In the Mixing Chambermentioning

confidence: 99%

“…To boost ERC usage, further development is required to improve their performance and to increase its competitiveness [12].…”

mentioning

confidence: 99%

Performance analysis and working fluid selection for ejector refrigeration cycle

Saleh

2016

Applied Thermal Engineering

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“…1) is able to provide a combined effect of compression, mixing and entrainment with nomoving parts and without limitations concerning working fluids. For these reasons, ejector refrigeration systems can be used in buildings, in distributed tri-generation systems and for the waste heat recover from industrial processes (Ben Mansour et al, 2014;Godefroy et al, 2007;Little and Garimella, 2011). Nevertheless, the ejector refrigeration has not been able to penetrate the market because of the low coefficient of performance (Sarkar, 2012): this is because the efficiency of the whole system is highly influenced by ejector performances, which significantly depends on the geometry, working fluid and operating conditions (Kasperski and Gil, 2014;Selvaraju and Mani, 2006;Varga et al, 2009a;Yapıcı et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

A study of working fluids for heat driven ejector refrigeration using lumped parameter models

Besagni

Mereu

Leo

et al. 2015

International Journal of Refrigeration

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COP Entrainment ratio Ejector refrigeration Ejector efficiencies a b s t r a c tThis paper studies the influence of working fluids over the performance of heat driven ejector refrigeration systems performance by using a lumped parameter model. The model used has been selected after a comparison of different models with a set of experimental data available in the literature. The effect of generator, evaporator and condenser temperature over the entrainment ratio and the COP has been investigated for different working fluids in the typical operating conditions of low grade energy sources. The results show a growth in performance (the entrainment ratio and the COP) with a rise in the generator and evaporator temperature and a decrease in the condenser temperature. The working fluids have a great impact on the ejector performance and each refrigerant has its own range of operating conditions. R134a is found to be suitable for low generator temperature (70e100 C), whereas the hydrocarbons R600 is suitable for medium generator temperatures (100e130 C) and R601 for high generator temperatures (130e180 C). i n t e r n a t i o n a l j o u r n a l o f r e f r i g e r a t i o n 5 8 ( 2 0 1 5 ) 1 5 4 e1 7

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Numerical evaluation of ejector-assisted mechanical compression systems for refrigeration applications

Cited by 48 publications

References 27 publications

Ejector refrigeration: A comprehensive review

Ejector refrigeration: A comprehensive review

Performance analysis and working fluid selection for ejector refrigeration cycle

A study of working fluids for heat driven ejector refrigeration using lumped parameter models

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