Laser Processed Condensing Heat Exchanger (LP-CHX) Test Article Design, Manufacturing, and Testing

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dc.creatorHansen, Scott
dc.creatorWallace, Sarah
dc.creatorZuhlke, Craig | Alexander, Dennis
dc.creatorRoth, Nick
dc.creatorEdiger, Aaron
dc.creatorSanders, John
dc.creatorIzenson, Mike
dc.creatorHamilton, Tanner
dc.date.accessioned2021-06-23T20:14:38Z
dc.date.available2021-06-23T20:14:38Z
dc.date.issued7/12/2021
dc.descriptionScott Hansen, NASA
dc.descriptionSarah Wallace, NASA
dc.descriptionDr. Craig Zuhlke, University of Nebraska-Lincoln
dc.descriptionDr. Dennis Alexander, University of Nebraska-Lincoln
dc.descriptionNick Roth, University of Nebraska-Lincoln
dc.descriptionAaron Ediger, University of Nebraska-Lincoln
dc.descriptionJohn Sanders, Edare LLC.
dc.descriptionMike Izenson, Creare LLC.
dc.descriptionTanner Hamilton, GoExpedi
dc.descriptionICES103: Thermal and Environmental Control of Exploration Vehicles and Habitatsen
dc.descriptionThe 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021.en_US
dc.description.abstractCurrent state-of-the-art Condensing Heat Exchangers (CHXs) require non-permanent coatings which have a history of degrading over time, becoming hydrophobic, and potentially contributing to dimethylsilanediol (DMSD) production on a spacecraft. Ultimately, this type of heat exchanger must be uninstalled and sent back to earth for refurbishment, which is not an option for spaceflight beyond low earth orbit. These significant technical issues must be solved for deep-space spaceflight. In continued pursuit of a high reliability CHX, a silver, dimpled sub-scale Laser Processed CHX (LP-CHX) was designed and manufactured. The LP-CHX does not require a coating, but rather relies only on a femtosecond laser processed silver surface for condensing. This paper highlights the design, development, manufacturing, and testing of the LP-CHX as well as the laser processing of the silver surfaces. Additionally, further microbial growth testing and long duration laser processed condensing tests are reported. These studies conclude that silver laser processed surfaces significantly minimize microbial growth and fungal growth when compared to plain silver and stainless steel metals.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES-2021-60
dc.identifier.urihttps://hdl.handle.net/2346/87073
dc.language.isoengen_US
dc.publisher50th International Conference on Environmental Systemsen_US
dc.subjectHeat Exchanger
dc.subjectCondensing
dc.subjectThermal Control
dc.subjectCondensing Heat Exchanger
dc.subjectSpacecraft Thermal Control
dc.titleLaser Processed Condensing Heat Exchanger (LP-CHX) Test Article Design, Manufacturing, and Testingen_US
dc.typePresentationen_US

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