STRESS AND FATIGUE ANALYSIS OF AIR-TO-REFRIGERANT HEAT EXCHANGERS WITH NON-ROUND TUBE SHAPES

Mingkan Zhang; Yoram Shabtay; James Tancabel; Zhenglai Shen; Daniel Bacellar; Vikrant Aute

STRESS AND FATIGUE ANALYSIS OF AIR-TO-REFRIGERANT HEAT EXCHANGERS WITH NON-ROUND TUBE SHAPES

Mingkan Zhang, Yoram Shabtay, James Tancabel, Zhenglai Shen, Daniel Bacellar, Vikrant Aute

Research output: Contribution to journal › Conference article › peer-review

Abstract

Air-to-refrigerant heat exchangers are fundamental components in Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC&R) systems. Recent research has shown that heat exchangers utilizing small hydraulic diameter, non-round, shape-optimized tubes to be promising next design update. Such tubes can improve performance, reduce material and lower refrigerant charge. However, such tube designs may be more susceptible to fatigue issues. Therefore, stress and fatigue analyses of such heat exchangers are critical to ensure structural integrity, reliability, and manufacturability. In the present work, a mechanical model is developed to obtain the stress distributions in heat exchangers with round, ellipse, and airfoil-shaped tubes. The results indicate that under 3.45 MPa internal pressure, the maximum stresses don't surpass 190 MPa.

Original language	English
Pages (from-to)	517-524
Number of pages	8
Journal	Proceedings of the Thermal and Fluids Engineering Summer Conference
Volume	2023-March
State	Published - 2023
Event	8th Thermal and Fluids Engineering Conference, TFEC 2023 - Hybrid, College Park, United States Duration: Mar 26 2023 → Mar 29 2023

Funding

This work was sponsored by the U. S. Department of Energy’s Building Technologies Office. The authors would like to acknowledge Mr. Antonio Bouza, the Technology Manager with the Department of Energy (DOE) Building Technologies Office (BTO) for his support. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
U.S. Department of Energy
Building Technologies Office

Keywords

Fatigue analysis
Heat exchanger
Non-round shapes
Stress analysis

Cite this

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title = "STRESS AND FATIGUE ANALYSIS OF AIR-TO-REFRIGERANT HEAT EXCHANGERS WITH NON-ROUND TUBE SHAPES",

abstract = "Air-to-refrigerant heat exchangers are fundamental components in Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC&R) systems. Recent research has shown that heat exchangers utilizing small hydraulic diameter, non-round, shape-optimized tubes to be promising next design update. Such tubes can improve performance, reduce material and lower refrigerant charge. However, such tube designs may be more susceptible to fatigue issues. Therefore, stress and fatigue analyses of such heat exchangers are critical to ensure structural integrity, reliability, and manufacturability. In the present work, a mechanical model is developed to obtain the stress distributions in heat exchangers with round, ellipse, and airfoil-shaped tubes. The results indicate that under 3.45 MPa internal pressure, the maximum stresses don't surpass 190 MPa.",

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AU - Zhang, Mingkan

AU - Shabtay, Yoram

AU - Tancabel, James

AU - Shen, Zhenglai

AU - Bacellar, Daniel

AU - Aute, Vikrant

PY - 2023

Y1 - 2023

N2 - Air-to-refrigerant heat exchangers are fundamental components in Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC&R) systems. Recent research has shown that heat exchangers utilizing small hydraulic diameter, non-round, shape-optimized tubes to be promising next design update. Such tubes can improve performance, reduce material and lower refrigerant charge. However, such tube designs may be more susceptible to fatigue issues. Therefore, stress and fatigue analyses of such heat exchangers are critical to ensure structural integrity, reliability, and manufacturability. In the present work, a mechanical model is developed to obtain the stress distributions in heat exchangers with round, ellipse, and airfoil-shaped tubes. The results indicate that under 3.45 MPa internal pressure, the maximum stresses don't surpass 190 MPa.

AB - Air-to-refrigerant heat exchangers are fundamental components in Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC&R) systems. Recent research has shown that heat exchangers utilizing small hydraulic diameter, non-round, shape-optimized tubes to be promising next design update. Such tubes can improve performance, reduce material and lower refrigerant charge. However, such tube designs may be more susceptible to fatigue issues. Therefore, stress and fatigue analyses of such heat exchangers are critical to ensure structural integrity, reliability, and manufacturability. In the present work, a mechanical model is developed to obtain the stress distributions in heat exchangers with round, ellipse, and airfoil-shaped tubes. The results indicate that under 3.45 MPa internal pressure, the maximum stresses don't surpass 190 MPa.

KW - Fatigue analysis

KW - Heat exchanger

KW - Non-round shapes

KW - Stress analysis

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M3 - Conference article

AN - SCOPUS:85171305038

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JO - Proceedings of the Thermal and Fluids Engineering Summer Conference

JF - Proceedings of the Thermal and Fluids Engineering Summer Conference

T2 - 8th Thermal and Fluids Engineering Conference, TFEC 2023

Y2 - 26 March 2023 through 29 March 2023

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STRESS AND FATIGUE ANALYSIS OF AIR-TO-REFRIGERANT HEAT EXCHANGERS WITH NON-ROUND TUBE SHAPES

Abstract

Funding

Keywords

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