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Mechanical Behavior of Copper Multi-Channel Tube for HVACR Systems

Qi, Lin
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1381328798

Abstract Details

2013, Master of Science (MS), Ohio University, Mechanical Engineering (Engineering and Technology).
The purpose of this research was to evaluate the mechanical behavior of extruded (UNS-C12200) copper multi-channel tube for HVACR (heating, ventilation, air conditioning and refrigeration) systems. A model was developed to predict the burst pressure of the copper tube. The assumption for the model is based on plane strain plastic deformation to an instant of instability where differential internal pressure is equal to zero. Physical simulations were used to develop a relevant microstructure that is representative of the tube in a manufactured heat-exchanger. To this end, cold rolling was used to simulate post-extrusion straightening and sizing of the tube. A subsequent thermal treatment was performed in a tube furnace to simulate a brazing thermal cycle. Tensile tests were conducted to obtain material data, and to determine material constants for a Voce type constitutive equation. Burst tests were conducted to validate the predictive model. Burst pressures were predicted to within 6% of measured values. The effects from cold working and the simulated brazing cycle were also evaluated in this research.
Frank Kraft (Advisor)
91 p.
Materials Science; Mechanical Engineering; Metallurgy
Analytical Model; CDA-122 DHP Copper; Constitutive Equation; Failure Pressure

Recommended Citations

Citations

  • Qi, L. (2013). Mechanical Behavior of Copper Multi-Channel Tube for HVACR Systems [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1381328798

    APA Style (7th edition)

  • Qi, Lin. Mechanical Behavior of Copper Multi-Channel Tube for HVACR Systems. 2013. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1381328798.

    MLA Style (8th edition)

  • Qi, Lin. "Mechanical Behavior of Copper Multi-Channel Tube for HVACR Systems." Master's thesis, Ohio University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1381328798

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.