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DESCRIPTION:Experimental Investigation of Low-Grade Heat Recovery in a Dire
 ct Contact Heat Exchanger: Operational Variable Impact\nKurt Adams\, Ph.D.
  Candidate\nA. Leon Linton Department of Mechanical\, Robotics\, and Indus
 trial Engineering\nLawrence Technological University\nAbstract\nThis prese
 ntation describes an experimental study of low-grade heat recovery using a
  three-phase direct contact heat exchanger with R1234yf and water as the w
 orking and heat-source fluids in an organic Rankine cycle.\nBackground inf
 ormation on conventional closed-loop heat exchangers and direct-contact he
 at exchangers is presented\, highlighting their operating principles\, adv
 antages\, limitations\, and relevance to low-grade waste heat recovery app
 lications. The experimental test apparatus is described\, along with the o
 perational commissioning results obtained. Three experiments and their obj
 ectives are discussed\, including the effects of refrigerant mass flow rat
 e\, water flow rate\, water inlet temperature\, system pressure\, refriger
 ant charge\, and water working height on exergy\, heat transfer\, and the 
 volumetric heat transfer coefficient.\nResults are presented in the form o
 f scatter plots with corresponding correlations. Conclusions are provided\
 , including apparatus and experimental limitations\, suggested improvement
 s to both\, as well as opportunities for future research.\nThis presentati
 on was distilled from the slide deck used in the defense of my dissertatio
 n on September 30\, 2026.\nDate: November 6\, 2026\nTime: 12:30 – 1:30 P
 M\nVenue: E159\, Engineering Building\n\nCo-sponsored by: College of Engin
 eering\, Lawrence Technological University\n\nSpeaker(s): \, Mr. Kurt\n\nR
 oom: E159\, Engineering Building\, Bldg: College of Engineering\, Lawrence
  Technological University\, 21000 West Ten Mile Road\, Southfield\, MI\, 4
 8075-1058\, Southfield\, MI 48075\, Michigan\, United States\, 48075
LOCATION:Room: E159\, Engineering Building\, Bldg: College of Engineering\,
  Lawrence Technological University\, 21000 West Ten Mile Road\, Southfield
 \, MI\, 48075-1058\, Southfield\, MI 48075\, Michigan\, United States\, 48
 075
ORGANIZER:mguduri@ltu.edu
SEQUENCE:12
SUMMARY:Experimental Investigation of Low-Grade Heat Recovery in a Direct C
 ontact Heat Exchanger: Operational Variable Impact
URL;VALUE=URI:https://events.vtools.ieee.org/m/590857
X-ALT-DESC:Description: <br /><p>Experimental Investigation of Low-Grade He
 at Recovery in a Direct Contact Heat Exchanger: Operational Variable Impac
 t<br>Kurt Adams\, Ph.D. Candidate<br>A. Leon Linton Department of Mechanic
 al\, Robotics\, and Industrial Engineering<br>Lawrence Technological Unive
 rsity<br>Abstract<br>This presentation describes an experimental study of 
 low-grade heat recovery using a three-phase direct contact heat exchanger 
 with R1234yf and water as the working and heat-source fluids in an organic
  Rankine cycle.<br>Background information on conventional closed-loop heat
  exchangers and direct-contact heat exchangers is presented\, highlighting
  their operating principles\, advantages\, limitations\, and relevance to 
 low-grade waste heat recovery applications. The experimental test apparatu
 s is described\, along with the operational commissioning results obtained
 . Three experiments and their objectives are discussed\, including the eff
 ects of refrigerant mass flow rate\, water flow rate\, water inlet tempera
 ture\, system pressure\, refrigerant charge\, and water working height on 
 exergy\, heat transfer\, and the volumetric heat transfer coefficient.<br>
 Results are presented in the form of scatter plots with corresponding corr
 elations. Conclusions are provided\, including apparatus and experimental 
 limitations\, suggested improvements to both\, as well as opportunities fo
 r future research.<br>This presentation was distilled from the slide deck 
 used in the defense of my dissertation on September 30\, 2026.<br>Date: No
 vember 6\, 2026<br>Time: 12:30 &ndash\; 1:30 PM<br>Venue: E159\, Engineeri
 ng Building</p>
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