Experimental investigation of PCM location in a commercial display cabinet cooled by a transcritical CO2 system

Yılmaz, Deniz; Mançuhan, Ebru; Yılmaz, Barış

doi:10.1016/j.ijrefrig.2020.09.006

Cited by 18 publications

(6 citation statements)

References 15 publications

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“…Minimization of temperature and maximization of RH inside the storage chamber was the objective of present study, and from results, it is evident that the incorporation of experimental PCM could attain the objective of the study. Similar kind of observations have been reported by Goudbudaga et al (2018), Manivel et al (2019), Yilmaz et al (2020) and Leungtongkum et al (2022) for PCM based storage container, domestic refrigerator, display cabinet and insulated box, respectively demonstrating the efficacy of PCM in improving the storage conditions.…”

Section: Resultssupporting

confidence: 84%

“…By virtue of the excellent thermal properties, PCMs have proven their acceptance at various applications. They are used in packaging, cold storage, refrigerators, refrigerated containers, medicine containers, ice‐cream containers, hot food storage, and so on (Gin & Farid, 2010; Goudbudaga et al, 2018; Hassan & Lund, 2021; Leungtongkum et al, 2022; Manivel et al, 2019; Raj & Goswami, 2018; Sathishkumar et al, 2020; Sebastin, 2018; Sharma & Buddhi, 2013; Yilmaz et al, 2020). It is evident from the reports that some refrigerators and cold chambers have been equipped with PCM embedded walls to reduce temperature fluctuations during power failure.…”

Section: Introductionmentioning

confidence: 99%

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Low‐cost inorganic phase change material improves the storage conditions of on‐farm storage chamber

Kale¹,

Indore

Nath

et al. 2023

J Food Process Engineering

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Efficacy of low‐cost inorganic phase change material (PCM) in improving storage conditions of on‐farm storage chamber was investigated. Before fabrication, thermal analysis of chamber was conducted using ANSYS (2021 R2). Results indicated that PCM proved its potentiality to maintain inside temperature. After thermal analysis, prototype of chamber was fabricated with outer and inner dimensions as 450 mm× 360 mm × 360 mm and 330 mm × 250 mm × 250 mm, respectively. PCM requirement, determined through one‐dimensional heat transfer analysis, was found as 2.41 kg. Subsequently, low‐cost, inorganic PCM was prepared from inorganic salt of Na2SO4∙NaCl∙10H2O in proportion of 37:16:47 and packed in pouches. On‐farm experiments were conducted to evaluate efficacy of experimental PCM under three cases, no‐PCM, with‐PCM no‐load, and with‐PCM full‐load. In third case, 14 kg vegetables were kept inside chamber as well as same quantity was kept outside the chamber. Results evidenced that PCM improved storage conditions, in terms of lower temperature (21.5–30.5°C) and increased RH (71.9%–88.6%), of chamber. Vegetables kept outside showed drastic weight loss (up to 80%), while that within chamber had meager losses (up to 10%). Thus, study concluded that low‐cost inorganic PCM is effective in improving storage conditions of on‐farm storage chamber and reduce weight loss of stored produce.Practical applicationsOn‐farm storage/transit‐storage/precooling of perishable commodities, such as fruits and vegetables is very important in order to reduce the postharvest losses of these commodities. Storage conditions comprising of low temperature and high humidity are capable of reducing the losses to large extent. However, attaining these conditions in on‐farm storage structures is cost intensive and cannot be afforded by large number of fruit‐vegetable growers of the developing countries. In this context, findings of present study would be useful in designing and developing the low‐cost PCM based on‐farm cold storage rooms/structures that would serve the purpose of reducing the postharvest losses.

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Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Low‐cost inorganic phase change material improves the storage conditions of on‐farm storage chamber

Kale¹,

Indore

Nath

et al. 2023

J Food Process Engineering

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“…Despite several efforts to explore the utilization of sprouted grains, limited products have been produced and introduced into the market. Thus, it is required to conduct more research and incorporate seed sprouts into different food industries to introduce them into the food chain (Liu et al, 2017;Yilmaz et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Technological Advancements for Processing and Preservation of Fruits and Vegetables

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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“…They showed that temperature remains lower when PCMs are placed compared to the case without PCMs. Yilmaz et al (Yilmaz, Mancuhan, and Yılmaz 2020) observed the influence of PCM locations in the cabinet and found that placement on the shelves keeps cabinet temperature more homogeneous and results in energy saving. PCMs have been put in different places in a refrigerator, for example, Azzous et al (Azzouz, Leducq, and Gobin 2009) used PCM on the back side of the evaporator, and they found that the integration of PCM reduces the number of the compressor on/off cycles, increases COP of the system by 5-15% and keeps the fridge cold for extra 5-9 hr.…”

Section: Introductionmentioning

confidence: 99%

Development and testing of a PCM enhanced domestic refrigerator with use of miniature DC compressor for weak/off grid locations

Riffat

Kutlu

Tapia-Brito

et al. 2021

International Journal of Green Energy

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This paper presents the development of a sustainable and affordable domestic refrigerator for rural areas where grid setting is weak or non-existent. The refrigerator uses a miniature refrigeration unit based on a micro direct current (DC) compressor, which can adjust its speed according to photovoltaic output variation with solar radiation intensity, in order to maximize cooling production. The experimental investigation aims to define the cooling capacity management of the refrigerator through the use of phase change materials (PCMs). PCM packs in the fridge are charged during the period of high solar radiation and, afterward, melting of PCM releases cooling to maintain a cold temperature for extra hours when solar radiation is low or not available. The paper presents the design and construction of an experimental refrigerator with a miniature refrigeration unit of a finned tube heat exchanger for the fridge cabinet; PCM selection and, particularly, the effect of heat transfer enhancement at the condenser are discussed. Lab-scale tests were carried in the UK and field tests were carried out in Ghana in a collaboration project. In lab-scale tests, it is found that a condenser modification can decrease the transient power consumption by up to 26%. In contrast, the field-testing results show that the daily power consumption can be reduced only from 0.9 to 0.84 kWh. Additionally, field testing results show that the cabinet temperature of the PCM-enhanced refrigerator rose from 7°C to 11°C after a period of 5 hr power outage.

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Experimental investigation of PCM location in a commercial display cabinet cooled by a transcritical CO2 system

Cited by 18 publications

References 15 publications

Low‐cost inorganic phase change material improves the storage conditions of on‐farm storage chamber

Low‐cost inorganic phase change material improves the storage conditions of on‐farm storage chamber

Technological Advancements for Processing and Preservation of Fruits and Vegetables

Development and testing of a PCM enhanced domestic refrigerator with use of miniature DC compressor for weak/off grid locations

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