Numerical and experimental investigation of liquid blowing agent and pentane blowing agent effects on the insulation of a household refrigerator

Gizem Duru; Dilek Kumlutas; Hasan Avci; Utku Alp Yucekaya; Ozgun Ozer

doi:10.1080/23744731.2021.1881412

Numerical and experimental investigation of liquid blowing agent and pentane blowing agent effects on the insulation of a household refrigerator

Gizem Duru, Dilek Kumlutas, Hasan Avci, Utku Alp Yucekaya, Ozgun Ozer

Mechanical and Aeronautical Engineering Division L5

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

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Abstract

Refrigerators are the most energy demanding household devices since they are working 7/24. Improving insulation material is crucial for reducing this demand. One of the promising ways to improve insulation materials is to develop better-blowing agents.
In this study, the effects of Liquid Blowing Agent (LBA) and Pentane Blowing Agent (PBA) on whole refrigerator insulation were investigated by experimental and numerical methods. The thermal conductivities of the insulation materials were measured by the hotwire method. The experimental results show that LBA has a 32.08% lower thermal conductivity regarding conventional polyurethane
with PBA. These experimental results utilized as boundary conditions for CFD model of the refrigerator. The numerical analysis suggests that LBA can decrease the refrigerators' heat loss between 5.52% and 19.34%

Original language	English
Pages (from-to)	832-842
Number of pages	11
Journal	Science and Technology for the Built Environment
Volume	27
Issue number	6
DOIs	https://doi.org/10.1080/23744731.2021.1881412
Publication status	Published - 3 Jul 2021

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title = "Numerical and experimental investigation of liquid blowing agent and pentane blowing agent effects on the insulation of a household refrigerator",

abstract = "Refrigerators are the most energy demanding household devices since they are working 7/24. Improving insulation material is crucial for reducing this demand. One of the promising ways to improve insulation materials is to develop better-blowing agents. In this study, the effects of Liquid Blowing Agent (LBA) and Pentane Blowing Agent (PBA) on whole refrigerator insulation were investigated by experimental and numerical methods. The thermal conductivities of the insulation materials were measured by the hotwire method. The experimental results show that LBA has a 32.08% lower thermal conductivity regarding conventional polyurethanewith PBA. These experimental results utilized as boundary conditions for CFD model of the refrigerator. The numerical analysis suggests that LBA can decrease the refrigerators' heat loss between 5.52% and 19.34%",

author = "Gizem Duru and Dilek Kumlutas and Hasan Avci and Yucekaya, {Utku Alp} and Ozgun Ozer",

note = "Funding Information: Dr. {\"O}zg{\"u}n {\"O}ZER , He completed his BA, MSC and PhD studies at Dokuz Eylul University, The Graduate School of Natural and Applied Sciences Mechanical Engineering, Energy Department. During his graduate education, he worked as a researcher at the University-industrial cooperation projects which were supported by {"}Ministry of Science, Industry and Technology{"} and {"}The Scientific and Technological Research Council of Turkey{"}. Additionally, he has a bachelor's degree in philosophy and an associate degree in Photography from Anadolu University. He worked as a lecturer of photography between 2005 and 2019 at the Izmir Chamber of Photographers. He was the Education Director of the same foundation between 2016 and 2019. He has been a research associate at the University of Manchester since 2019. Publisher Copyright: {\textcopyright} Copyright {\textcopyright} 2021 ASHRAE.",

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doi = "10.1080/23744731.2021.1881412",

language = "English",

volume = "27",

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T1 - Numerical and experimental investigation of liquid blowing agent and pentane blowing agent effects on the insulation of a household refrigerator

AU - Duru, Gizem

AU - Kumlutas, Dilek

AU - Avci, Hasan

AU - Yucekaya, Utku Alp

AU - Ozer, Ozgun

N1 - Funding Information: Dr. Özgün ÖZER , He completed his BA, MSC and PhD studies at Dokuz Eylul University, The Graduate School of Natural and Applied Sciences Mechanical Engineering, Energy Department. During his graduate education, he worked as a researcher at the University-industrial cooperation projects which were supported by "Ministry of Science, Industry and Technology" and "The Scientific and Technological Research Council of Turkey". Additionally, he has a bachelor's degree in philosophy and an associate degree in Photography from Anadolu University. He worked as a lecturer of photography between 2005 and 2019 at the Izmir Chamber of Photographers. He was the Education Director of the same foundation between 2016 and 2019. He has been a research associate at the University of Manchester since 2019. Publisher Copyright: © Copyright © 2021 ASHRAE.

PY - 2021/7/3

Y1 - 2021/7/3

N2 - Refrigerators are the most energy demanding household devices since they are working 7/24. Improving insulation material is crucial for reducing this demand. One of the promising ways to improve insulation materials is to develop better-blowing agents. In this study, the effects of Liquid Blowing Agent (LBA) and Pentane Blowing Agent (PBA) on whole refrigerator insulation were investigated by experimental and numerical methods. The thermal conductivities of the insulation materials were measured by the hotwire method. The experimental results show that LBA has a 32.08% lower thermal conductivity regarding conventional polyurethanewith PBA. These experimental results utilized as boundary conditions for CFD model of the refrigerator. The numerical analysis suggests that LBA can decrease the refrigerators' heat loss between 5.52% and 19.34%

AB - Refrigerators are the most energy demanding household devices since they are working 7/24. Improving insulation material is crucial for reducing this demand. One of the promising ways to improve insulation materials is to develop better-blowing agents. In this study, the effects of Liquid Blowing Agent (LBA) and Pentane Blowing Agent (PBA) on whole refrigerator insulation were investigated by experimental and numerical methods. The thermal conductivities of the insulation materials were measured by the hotwire method. The experimental results show that LBA has a 32.08% lower thermal conductivity regarding conventional polyurethanewith PBA. These experimental results utilized as boundary conditions for CFD model of the refrigerator. The numerical analysis suggests that LBA can decrease the refrigerators' heat loss between 5.52% and 19.34%

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DO - 10.1080/23744731.2021.1881412

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JF - Science and Technology for the Built Environment

SN - 2374-4731

IS - 6

ER -

Numerical and experimental investigation of liquid blowing agent and pentane blowing agent effects on the insulation of a household refrigerator

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