Development and experimental study of the characteristics of a prototype miniature vapor compression refrigerator

Yuan, Wenzhen; Yang, Bo; Yang, Yufei; Ren, Kexian; Xu, Jiefeng; Liao, Yibing

doi:10.1016/j.apenergy.2015.01.001

Cited by 20 publications

(8 citation statements)

References 31 publications

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“…System, weighing 2.85 kg provided 300 W of cooling capacity with COP of 2.4 at evaporating temperature of 7 °C and condensation temperature of 40 °C. Yuan et al [27] developed a prototype of man-portable refrigeration system using refrigerant R134a. The design cooling capacity was 260 W with evaporating temperature of 24 °C.…”

Section: Micro Vapour-compression In Other Applicationsmentioning

confidence: 99%

State of the art of micro vapour-compression systems

Blatnik,

Klinar,

Kitanovski

2024

J. Phys.: Conf. Ser.

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Thermal management is becoming more challenging due to the increasing compactness and computational power of appliances. Affordable and efficient solutions include active liquid cooling methods, thermoelectric cooling, and the use of heat pipes. From these, vapour-compression technologies achieve the highest power density. However, the downscaling of vapour-compression for cooling of personal computers or workstations is rather problematic from several different reasons. The first problem concerns the low second law efficiency of miniature vapour-compression systems. The second problem concerns the available space occupation of such a cooling system. Moreover, miniature and high-power density condensers and evaporators have not yet been adequately researched and developed to date. In this review, we present several vapour-compression refrigeration systems that are based in some way on the miniaturisation of systems or individual components – evaporators, condensers, and compressors. These are presented and compared in terms of cooling power, COP, and the second law efficiency. At the end of the manuscript, guidelines for future improvements and the implementation of miniature vapour-compression systems are presented.

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Section: Micro Vapour-compression In Other Applicationsmentioning

confidence: 99%

State of the art of micro vapour-compression systems

Blatnik,

Klinar,

Kitanovski

2024

J. Phys.: Conf. Ser.

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“…The system was assembled in a backpack-type configuration with a total mass of 5.3 kg and measuring 318 × 273 × 152 mm 3 . The authors found that the system can provide 178 W of cooling for 5.7 h in an ambient temperature of 43.3 • C. An even more compact wearable system was proposed by Yuan et al [63] with 190 × 190 × 100 mm 3 overall dimensions and 2.75 kg in weight. The system includes a liquid cooling vest and therefore demands an additional pump, and yet the system is lighter and more compact.…”

Section: Personal Coolingmentioning

confidence: 99%

A Review of Small-Scale Vapor Compression Refrigeration Technologies

Silva-Romero,

Belman-Flores,

Aceves

2024

Applied Sciences

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The study and development of miniature refrigeration and climate conditioning systems based on vapor compression for small-scale applications have received wide interest in recent years due to their advantages compared with other available technologies, both active and passive. This paper identifies different applications and areas of opportunity, including electronic components and personal cooling, where small-scale vapor compression refrigeration systems are anticipated to play a key role in technological development. This paper presents the current state of the art, including applications, component designs, operating conditions, experiments, published results, etc. to describe the current status of small-scale vapor compression refrigeration and illustrate a perspective for the future of this technology.

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“…Wu and Du [10] investigated the effect of refrigerant charge and compressor speed on the performance of a miniature VCR system with cooling capacity of 200 W. Their results indicated that the COP of the system depends on the refrigerant charge and compressor speed and its value varied from 2.7 to 3.4 (the compressor consumes 58.8 -74 W or 29.4 -37 % of the cooling load). Yuan et al [11] investigated the performance of a miniature VCR system for personal cooling applications. Their system achieved a maximum cooling capacity of 260 W with a COP value of 1.62, i.e.…”

Section: Applicationsmentioning

confidence: 99%

Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

Karayiannis

Mahmoud

2018

International Heat Transfer Conference 16

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Flow boiling in mini to micro passages located at the heat source, and as part of a thermal management system, has been identified as a possible way to remove the increasing high heat fluxes generated by high power electronic devices due to their capability of high heat transfer rates with small surface temperature variations. However, some still unresolved fundamental issues hinder the possible full adoption of this technology. These relate to the prevailing flow patterns, heat transfer rates and pressure drop in such geometries, and their dependence on key parameters. The possible major applications of flow boiling in microchannels are first mentioned in this paper, highlighting the requirements and the challenges of the thermal management of each application. The paper then presents new experimental research by the present authors as well as research reported in the literature on flow boiling in single tubes and rectangular multi microchannels to help elucidate the following fundamental issues: the definition of a microchannel, prevailing flow patterns, heat transfer mechanisms, flow instability and reversal and their effect on heat transfer rates, effect of channel material and surface characteristics (including latest research in coatings), effect of different fluid properties, and its relation to channel material, effect of channel length and aspect ratio. An appreciation of the above can help explain the interpretation of the prevailing fluid flow and heat transfer phenomena and the data scatter and discrepancies observed in past studies. In addition, models and correlations predicting flow patterns and heat transfer rates are presented.

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Development and experimental study of the characteristics of a prototype miniature vapor compression refrigerator

Cited by 20 publications

References 31 publications

State of the art of micro vapour-compression systems

State of the art of micro vapour-compression systems

A Review of Small-Scale Vapor Compression Refrigeration Technologies

Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

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