Operation of a portable cooling system integrated with thermal storage using a natural refrigerant

Rohit Dhumane; Yiyuan Qiao; Jiazhen Ling; Jan Muehlbauer; Vikrant Aute; Reinhard Radermacher

doi:10.18462/iir.gl.2018.1158

Operation of a portable cooling system integrated with thermal storage using a natural refrigerant

Rohit Dhumane, Yiyuan Qiao, Jiazhen Ling, Jan Muehlbauer, Vikrant Aute, Reinhard Radermacher

Thermal Energy Storage

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Buildings have been identified as one of the most promising sectors for energy saving. An innovative portable cooling system (PCS) using vapor compression cycle is being developed to reduce building energy consumption in the range of 10-30%. The present article focuses on understanding the performance of this PCS with R290 as the refrigerant, in comparison to R134a which is currently used in the prototype. The condenser heat is stored in a helical coil heat exchanger embedded in PCM. The resultant processes of melting and solidification in PCM involve varying effects of natural convection and conduction. Empirical heat transfer coefficient (within 10% uncertainty) for melting is measured experimentally and then used in a dynamic Modelica-based model of the PCS, which is validated with experimental data. The model is then used to predict the operation with R290 to identify benefits and shortcomings of switching the refrigerant.

Original language	English
Title of host publication	13th IIR Gustav Lorentzen Conference on Natural Refrigerants
Subtitle of host publication	Natural Refrigerant Solutions for Warm Climate Countries, Proceedings
Publisher	International Institute of Refrigeration
Pages	328-336
Number of pages	9
ISBN (Electronic)	9782362150265
DOIs	https://doi.org/10.18462/iir.gl.2018.1158
State	Published - 2018
Event	13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries - Valencia, Spain Duration: Jun 18 2018 → Jun 20 2018

Publication series

Name	Refrigeration Science and Technology
Volume	2018-June
ISSN (Print)	0151-1637

Conference

Conference	13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
Country/Territory	Spain
City	Valencia
Period	06/18/18 → 06/20/18

Funding

The authors are grateful to the Advanced Research Projects Agency-Energy (ARPA-E) for funding the project with Award Number DE-AR0000530. The contributions of the Center for Environmental Energy Engineering at the University of Maryland is also acknowledged.

Keywords

Helical coil
PCM
Propane
R290
Thermal storage

Access to Document

10.18462/iir.gl.2018.1158

Cite this

Dhumane, R., Qiao, Y., Ling, J., Muehlbauer, J., Aute, V., & Radermacher, R. (2018). Operation of a portable cooling system integrated with thermal storage using a natural refrigerant. In 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings (pp. 328-336). (Refrigeration Science and Technology; Vol. 2018-June). International Institute of Refrigeration. https://doi.org/10.18462/iir.gl.2018.1158

Dhumane, Rohit ; Qiao, Yiyuan ; Ling, Jiazhen et al. / Operation of a portable cooling system integrated with thermal storage using a natural refrigerant. 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings. International Institute of Refrigeration, 2018. pp. 328-336 (Refrigeration Science and Technology).

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title = "Operation of a portable cooling system integrated with thermal storage using a natural refrigerant",

abstract = "Buildings have been identified as one of the most promising sectors for energy saving. An innovative portable cooling system (PCS) using vapor compression cycle is being developed to reduce building energy consumption in the range of 10-30\%. The present article focuses on understanding the performance of this PCS with R290 as the refrigerant, in comparison to R134a which is currently used in the prototype. The condenser heat is stored in a helical coil heat exchanger embedded in PCM. The resultant processes of melting and solidification in PCM involve varying effects of natural convection and conduction. Empirical heat transfer coefficient (within 10\% uncertainty) for melting is measured experimentally and then used in a dynamic Modelica-based model of the PCS, which is validated with experimental data. The model is then used to predict the operation with R290 to identify benefits and shortcomings of switching the refrigerant.",

keywords = "Helical coil, PCM, Propane, R290, Thermal storage",

author = "Rohit Dhumane and Yiyuan Qiao and Jiazhen Ling and Jan Muehlbauer and Vikrant Aute and Reinhard Radermacher",

note = "Publisher Copyright: {\textcopyright} 2018 International Institute of Refrigeration. All rights reserved.; 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries ; Conference date: 18-06-2018 Through 20-06-2018",

year = "2018",

doi = "10.18462/iir.gl.2018.1158",

language = "English",

series = "Refrigeration Science and Technology",

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Dhumane, R, Qiao, Y, Ling, J, Muehlbauer, J, Aute, V & Radermacher, R 2018, Operation of a portable cooling system integrated with thermal storage using a natural refrigerant. in 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings. Refrigeration Science and Technology, vol. 2018-June, International Institute of Refrigeration, pp. 328-336, 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Valencia, Spain, 06/18/18. https://doi.org/10.18462/iir.gl.2018.1158

Operation of a portable cooling system integrated with thermal storage using a natural refrigerant. / Dhumane, Rohit; Qiao, Yiyuan; Ling, Jiazhen et al.
13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings. International Institute of Refrigeration, 2018. p. 328-336 (Refrigeration Science and Technology; Vol. 2018-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Dhumane, Rohit

AU - Qiao, Yiyuan

AU - Ling, Jiazhen

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AU - Aute, Vikrant

AU - Radermacher, Reinhard

PY - 2018

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N2 - Buildings have been identified as one of the most promising sectors for energy saving. An innovative portable cooling system (PCS) using vapor compression cycle is being developed to reduce building energy consumption in the range of 10-30%. The present article focuses on understanding the performance of this PCS with R290 as the refrigerant, in comparison to R134a which is currently used in the prototype. The condenser heat is stored in a helical coil heat exchanger embedded in PCM. The resultant processes of melting and solidification in PCM involve varying effects of natural convection and conduction. Empirical heat transfer coefficient (within 10% uncertainty) for melting is measured experimentally and then used in a dynamic Modelica-based model of the PCS, which is validated with experimental data. The model is then used to predict the operation with R290 to identify benefits and shortcomings of switching the refrigerant.

AB - Buildings have been identified as one of the most promising sectors for energy saving. An innovative portable cooling system (PCS) using vapor compression cycle is being developed to reduce building energy consumption in the range of 10-30%. The present article focuses on understanding the performance of this PCS with R290 as the refrigerant, in comparison to R134a which is currently used in the prototype. The condenser heat is stored in a helical coil heat exchanger embedded in PCM. The resultant processes of melting and solidification in PCM involve varying effects of natural convection and conduction. Empirical heat transfer coefficient (within 10% uncertainty) for melting is measured experimentally and then used in a dynamic Modelica-based model of the PCS, which is validated with experimental data. The model is then used to predict the operation with R290 to identify benefits and shortcomings of switching the refrigerant.

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KW - Propane

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BT - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants

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Dhumane R, Qiao Y, Ling J, Muehlbauer J, Aute V, Radermacher R. Operation of a portable cooling system integrated with thermal storage using a natural refrigerant. In 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings. International Institute of Refrigeration. 2018. p. 328-336. (Refrigeration Science and Technology). doi: 10.18462/iir.gl.2018.1158

Operation of a portable cooling system integrated with thermal storage using a natural refrigerant

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Keywords

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