A study of cooling rate of the supercooled water inside of cylindrical capsules

Sergio Leal Braga; Juan José Milón Guzmán; Hugo Guillermo Jimenez Pacheco

doi:10.1016/j.ijrefrig.2008.10.014

A study of cooling rate of the supercooled water inside of cylindrical capsules

Sergio Leal Braga, Juan José Milón Guzmán, Hugo Guillermo Jimenez Pacheco

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

An experimental apparatus was developed to investigate the supercooling phenomenon of pure water inside cylindrical capsules used for cold storage process. The Phase Change Material (PCM) used was distilled water. The external coolant material was a water-alcohol mixture (50% vol.), controlled by a constant temperature bath (CTB) in four fixed values (-4 °C, -6 °C, -8 °C, and -10 °C). Temperatures varying with time were measured inside and outside the capsule. Cylindrical capsules with internal diameter of 30 mm, 45 mm, and 80 mm, with 1.5 mm wall thickness were made in aluminum, bronze or acrylic materials. The Cooling Rate (CR) was investigated for different positions on the internal wall of the capsule, for different external coolant temperatures (T_c), different capsules diameters and different materials. The results showed that the cooling rate is a strong function of the angular position on the internal wall, the coolant temperature, the capsule material, and the capsule's diameter.

Original language	English
Pages (from-to)	953-959
Number of pages	7
Journal	International Journal of Refrigeration
Volume	32
Issue number	5
DOIs	https://doi.org/10.1016/j.ijrefrig.2008.10.014
State	Published - Aug 2009
Externally published	Yes

Bibliographical note

Funding Information:
This paper was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq of Brazil. The authors also wish to thank the agreement between Pontifical Catholic University of Rio de Janeiro, Brazil and San Pablo Catholic University, Peru for motivating this research.

Keywords

Capsule
Experiment
Material
Performance
Phase change
Supercooling
Thermal storage
Water

Access to Document

10.1016/j.ijrefrig.2008.10.014

Cite this

@article{a80560b2151b44a699e31a150b25c608,

title = "A study of cooling rate of the supercooled water inside of cylindrical capsules",

abstract = "An experimental apparatus was developed to investigate the supercooling phenomenon of pure water inside cylindrical capsules used for cold storage process. The Phase Change Material (PCM) used was distilled water. The external coolant material was a water-alcohol mixture (50% vol.), controlled by a constant temperature bath (CTB) in four fixed values (-4 °C, -6 °C, -8 °C, and -10 °C). Temperatures varying with time were measured inside and outside the capsule. Cylindrical capsules with internal diameter of 30 mm, 45 mm, and 80 mm, with 1.5 mm wall thickness were made in aluminum, bronze or acrylic materials. The Cooling Rate (CR) was investigated for different positions on the internal wall of the capsule, for different external coolant temperatures (Tc), different capsules diameters and different materials. The results showed that the cooling rate is a strong function of the angular position on the internal wall, the coolant temperature, the capsule material, and the capsule's diameter.",

keywords = "Capsule, Experiment, Material, Performance, Phase change, Supercooling, Thermal storage, Water",

author = "Braga, {Sergio Leal} and {Mil{\'o}n Guzm{\'a}n}, {Juan Jos{\'e}} and {Jimenez Pacheco}, {Hugo Guillermo}",

note = "Funding Information: This paper was supported by the Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico – CNPq of Brazil. The authors also wish to thank the agreement between Pontifical Catholic University of Rio de Janeiro, Brazil and San Pablo Catholic University, Peru for motivating this research.",

year = "2009",

month = aug,

doi = "10.1016/j.ijrefrig.2008.10.014",

language = "Ingl{\'e}s",

volume = "32",

pages = "953--959",

journal = "International Journal of Refrigeration",

issn = "0140-7007",

publisher = "Elsevier Ltd.",

number = "5",

}

TY - JOUR

T1 - A study of cooling rate of the supercooled water inside of cylindrical capsules

AU - Braga, Sergio Leal

AU - Milón Guzmán, Juan José

AU - Jimenez Pacheco, Hugo Guillermo

N1 - Funding Information: This paper was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq of Brazil. The authors also wish to thank the agreement between Pontifical Catholic University of Rio de Janeiro, Brazil and San Pablo Catholic University, Peru for motivating this research.

PY - 2009/8

Y1 - 2009/8

N2 - An experimental apparatus was developed to investigate the supercooling phenomenon of pure water inside cylindrical capsules used for cold storage process. The Phase Change Material (PCM) used was distilled water. The external coolant material was a water-alcohol mixture (50% vol.), controlled by a constant temperature bath (CTB) in four fixed values (-4 °C, -6 °C, -8 °C, and -10 °C). Temperatures varying with time were measured inside and outside the capsule. Cylindrical capsules with internal diameter of 30 mm, 45 mm, and 80 mm, with 1.5 mm wall thickness were made in aluminum, bronze or acrylic materials. The Cooling Rate (CR) was investigated for different positions on the internal wall of the capsule, for different external coolant temperatures (Tc), different capsules diameters and different materials. The results showed that the cooling rate is a strong function of the angular position on the internal wall, the coolant temperature, the capsule material, and the capsule's diameter.

AB - An experimental apparatus was developed to investigate the supercooling phenomenon of pure water inside cylindrical capsules used for cold storage process. The Phase Change Material (PCM) used was distilled water. The external coolant material was a water-alcohol mixture (50% vol.), controlled by a constant temperature bath (CTB) in four fixed values (-4 °C, -6 °C, -8 °C, and -10 °C). Temperatures varying with time were measured inside and outside the capsule. Cylindrical capsules with internal diameter of 30 mm, 45 mm, and 80 mm, with 1.5 mm wall thickness were made in aluminum, bronze or acrylic materials. The Cooling Rate (CR) was investigated for different positions on the internal wall of the capsule, for different external coolant temperatures (Tc), different capsules diameters and different materials. The results showed that the cooling rate is a strong function of the angular position on the internal wall, the coolant temperature, the capsule material, and the capsule's diameter.

KW - Capsule

KW - Experiment

KW - Material

KW - Performance

KW - Phase change

KW - Supercooling

KW - Thermal storage

KW - Water

UR - http://www.scopus.com/inward/record.url?scp=67349173675&partnerID=8YFLogxK

U2 - 10.1016/j.ijrefrig.2008.10.014

DO - 10.1016/j.ijrefrig.2008.10.014

M3 - Artículo

AN - SCOPUS:67349173675

VL - 32

SP - 953

EP - 959

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

IS - 5

ER -

A study of cooling rate of the supercooled water inside of cylindrical capsules

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this