A review on expanders and their performance in vapour compression refrigeration systems

Murthy, Anarghya Ananda; Subiantoro, Alison; Norris, Stuart; Fukuta, Mitsuhiro

doi:10.1016/j.ijrefrig.2019.06.019

Cited by 65 publications

(12 citation statements)

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“…elastocaloric (Qian et al, 2016) and solar cooling (Al-Alili et al, 2014)) down to component-level reviews (e.g. expanders (Murthy et al, 2019) and control methods (Xu et al, 2018)). Second, in the handful of available comparative reviews between active cooling technologies (Fischer et al, 1994;Bansal et al, 2012;Goetzler et al, 2014;Brown and Domanski, 2014), the comparisons on technological maturity are mostly performed based on qualitative expert judgement in categorising the development status of a technology, e.g.…”

Section: Introductionmentioning

confidence: 99%

Patent landscape of not-in-kind active cooling technologies between 1998 and 2017

Renaldi

Miranda

Khosla

et al. 2021

Journal of Cleaner Production

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Section: Introductionmentioning

confidence: 99%

Patent landscape of not-in-kind active cooling technologies between 1998 and 2017

Renaldi

Miranda

Khosla

et al. 2021

Journal of Cleaner Production

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“…For instance, Zhang et al [58] showed a gain of about 25-30% of the compressor input power with CO2 as refrigerant by using an expander. Also, the performance of such systems increases up to 30% for CO2-based systems and up to 10% for non CO2-based systems [59]. However, expanders are not yet commercially available and most studies conducted on expanders are based on numerical analysis.…”

Section: Research Challengesmentioning

confidence: 99%

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Cattin¹,

Jonnalagedda²,

Makoliso³

et al. 2020

Preprint

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Vaccines need to be continuously stored between 2°C to 8°C, from their production to administration to beneficiaries. Every year, more than 25% of vaccines are wasted. One of the main reasons for this wastage is the lack of cold chain continuity in low-income settings, where electricity is scarce. Recently, several advances have been made in cooling technologies to store and transport vaccines. The current paper presents a review of refrigeration technologies based on scientific publications, industry white papers and other grey literature. For each refrigeration method, we describe its working principle, the best performing devices available as well as the remaining research challenges in order to obtain a very high degree of performance enhancement. Finally, we comment on their applicability for vaccine transport and storage.

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“…Scroll-type compressors/expanders are Positive Displacement (PD) machines largely adopted in refrigeration systems, heat pumps, and power units. As an example, Murthy et al [1] performed a review on expanders types used in vapor compression refrigeration systems while Fukuta et al [2] presented an investigation aimed to recover the throttling loss in trans-critical CO 2 refrigeration cycles. Byrne et al [3] and Legros et al [4] presented a thermodynamically based model to design the scroll compressor for heat pumps and Organic Rankine Cycles (ORCs), respectively.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Inner Fluid-Dynamics of Scroll Compressors and Comparison between CFD Numerical and Modelling Approaches

Cavazzini¹,

Giacomel²,

Benato³

et al. 2021

Advances in Energy Research

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Scroll compressors are widely adopted machines in both refrigeration systems and heat pumps. However, their efficiency is basically poor and constitutes the main bottleneck for improving the overall system performance. In fact, due to the complex machine fluid dynamics, scroll design is mainly based on theoretical and/or semi-empirical approaches. Designs strategies that do not guarantee an in-depth analysis of the machine behavior can be supplemented with a Computation Fluid Dynamics (CFD) approach. To this purpose, in the present work, the scroll compressor inner fluid dynamics is numerically analyzed in detail using two CFD software and two different modelling strategies for the axial gap. The analysis of the fluid evolution within the scroll wraps reveals unsteady phenomena developing during the suction and discharge phases, amplified by the axial clearance with negative impact on the main fluid flow (e.g., −13% of average mass flow rate for an axial gap of 30 µ) and on the scroll performance (e.g., +26% of average absorbed power for an axial gap of 30 µ). In terms of accuracy, the k-ε offers good performance on the estimation of average quantities but proves to be inadequate for capturing the complexity of the unsteady phenomena caused by the axial gap (e.g., −19% of the absorbed power in case of perfect tip seal). The need for Advances in Energy Research: 2 nd Edition 3 www.videleaf.com considering specific geometric details in design procedures is highlighted, and guidelines on the choice of the most suitable numerical model are provided depending on the analysis needs.

show abstract

A review on expanders and their performance in vapour compression refrigeration systems

Cited by 65 publications

References 100 publications

Patent landscape of not-in-kind active cooling technologies between 1998 and 2017

Patent landscape of not-in-kind active cooling technologies between 1998 and 2017

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Analysis of the Inner Fluid-Dynamics of Scroll Compressors and Comparison between CFD Numerical and Modelling Approaches

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