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Search Publications by:

Displaying 26 - 50 of 131

Specific heat of aluminum oxide nanolubricants

June 27, 2018

Author(s)

Lingnan Lin, Mark A. Kedzierski

Horizontal Convective Boiling of R1234yf, R134a, and R450A within a Micro-Fin Tube

March 11, 2018

Author(s)

Mark A. Kedzierski, Donggyu Kang

Pool Boiling of Low GWP Replacements for R134a on a Reentrant Cavity Surface; Extensive Measurement and Analysis

October 10, 2017

Author(s)

Mark A. Kedzierski, Lingnan Lin, Donggyu Kang

Horizontal Convective Boiling of R1234yf, R134a, and R450A within a Micro-Fin Tube; Extensive Measurement and Analysis

August 10, 2017

Author(s)

Mark A. Kedzierski, Donggyu Kang

Mixture Boiling

July 24, 2017

Author(s)

Mark A. Kedzierski

Numerical Analysis of the Influence of Low Frequency Vibration on Bubble Growth

May 2, 2017

Author(s)

Dong Han, Mark A. Kedzierski

Numerical simulation of bubble growth during pool boiling under the influence of low frequency vibration was done to understand the influence of common vibrations such as those induced by wind, highway transportation, and nearby mechanical devices on the

A Fluorescence Based Measurement Technique to Quantify Water Contaminants at Pipe Surfaces During Flow

March 31, 2017

Author(s)

Mark A. Kedzierski

This paper provides a detailed account of the development of a fluorescence based measurement technique for measuring the mass of contaminant on solid surfaces in the presence of water flow. A test apparatus was designed and developed for the purpose of

VISCOSITY, DENSITY, AND THERMAL CONDUCTIVITY OF ALUMINUM OXIDE AND ZINC OXIDE NANOLUBRICANTS

January 3, 2017

Author(s)

Mark A. Kedzierski, Riccardo Brignoli, Kevin Quine, J S. Brown

This paper presents liquid kinematic viscosity, density, and thermal conductivity measurements of eleven different synthetic polyolester-based nanoparticle dispersions (nanolubricants) at atmospheric pressure over the temperature range 288 K to 318 K. Both

Novel Method and Apparatus Design for Testing Small Magnetocaloric Samples

September 29, 2016

Author(s)

Mark A. Kedzierski, William V. Payne, Harrison M. Skye

Horizontal Convective Boiling of R448A, R449A, and R452B within a Micro-Fin Tube

August 3, 2016

Author(s)

Mark A. Kedzierski, Donggyu Kang

This paper presents local convective boiling measurements in a micro-fin tube for three low global warming potential (GWP) refrigerants: R448A, R449A, and R452B . An existing correlation was modified to predict multi-component mixtures, which predicted 98

Diesel Adsorption to PVC and Iron from Contaminated Water Flow and Flushing Tests

June 14, 2016

Author(s)

Mark A. Kedzierski

This paper presents an experimental and theoretical study of aqueous diesel contamination and decontamination of a polyvinyl chloride (PVC) surface and an iron (Fe) surface. A test apparatus designed for the purpose of studying adsorption of diesel from a

Horizontal Convective Boiling of R448A, R449A, and R452B within a Micro-Fin Tube with Extensive Measurement and Analysis Details

May 12, 2016

Author(s)

Mark A. Kedzierski, Donggyu Kang

This report presents local convective boiling measurements in a micro-fin tube for three low global warming potential (GWP ) refrigerants: R448A, R449A, and R452B as possible replacements for R404A. Water heating either in counterflow or in parallel flow

Performance Ranking of Refrigerants With Low Global Warming Potential

January 7, 2015

Author(s)

Mark A. Kedzierski, J S. Brown, Junemo Koo

This paper evaluates in a typical air-conditioner the cycle performance of thirty-nine refrigerants identified in the AHRI Low Global Warming Potential (GWP) Alternative Refrigerants Evaluation Program (Low-GWP AREP). The Low-GWP AREP was initiated in

Effect of Concentration on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface

November 23, 2014

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. Nanolubricants with 10 nm diameter Al2O3 nanoparticles of various volume fractions (1.6 %, 2.3 %

Effect of Acoustic Excitation on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface

November 1, 2014

Author(s)

Mark A. Kedzierski, Steven E. Fick

This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a commercial (Turbo-BII-HP) boiling surface. A nanolubricant with 10 nm diameter Al2O3 nanoparticles at a 5.1

Potential Research Areas in Residential Energy Storage for NISTs Engineering Laboratory

September 25, 2014

Author(s)

Mark A. Kedzierski, William V. Payne, Harrison M. Skye

This paper recommends research that is required to develop and, thus, enable cost effective, residential electricity storage systems for renewable energy. As residential electricity generation from renewable sources becomes more prevalent, residential

Effect of Acoustic Excitation on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface with Extensive Measurement and Analysis Details

August 6, 2014

Author(s)

Mark A. Kedzierski, Steven E. Fick

This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. A nanolubricant with 10 nm diameter Al2O3 nanoparticles at a 5.1 % volume

Horizontal Convective Boiling of R134a, R1234yf/R134a, and R1234ze(E)within a Micro-Fin Tube

June 24, 2014

Author(s)

Mark A. Kedzierski, ki-jung park

This report presents local convective boiling measurements in a micro-fin tube for R134a and two low global warming potential (GWP ) refrigerants: R1234yf/ R134a, 56/44 % mass and R1234ze(E). The heat transfer coefficient of the three test fluids were

Effect of Concentration on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface with Extensive Measurement and Analysis Details

September 25, 2013

Author(s)

Mark A. Kedzierski

Horizontal Convective Boiling of R134a, R1234yf/R134a, and R1234ze(E) within a Micro-Fin Tube with Extensive Measurement and Analysis Details

August 15, 2013

Author(s)

Mark A. Kedzierski, Ki-Jung Park

This report presents local convective boiling measurements in a micro-fin tube for R134a and two low global warming potential (GWP ) refrigerants: R1234yf/ R134a, 56/44 % mass and R1234ze(E). Water heating either in counterflow or in parallel flow with the

Measurement and Prediction of Vapor-Space Condensation of Refrigerants on Trapezoidal-Finned and Turbo-C Geometries

June 3, 2013

Author(s)

Mark A. Kedzierski, J S. Brown, Matt Carr

This paper reports vapor-space condensation heat transfer measurements for R123, R134a, and R245fa on two passively enhanced vertical surfaces and on a vertical smooth plate. The two enhanced surfaces were the integral trapezoidal-fin and the Turbo-CII

Nanofluids, Heat-Transfer Equipment and Plain-Vanilla

June 3, 2013

Author(s)

Mark A. Kedzierski

Nanoparticle materials can be very inexpensive and the technology for producing nanofluids is mature. The production of inks, paints, coatings, and suntan lotions is old enough to be a very competitive industry. So, nanofluids probably set the benchmark

R134a/Al2O3 Nanolubricant Mixture Boiling on a Rectangular Finned Pool Boiling Surface with Extensive Measurement and Analysis Details (NIST TN 1721)

May 16, 2013

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a rectangular finned boiling surface. A nanolubricant containing roughly 10 nm diameter Al2O3 nanoparticles of various volume

VISCOSITY AND DENSITY OF ALUMINUM OXIDE NANOLUBRICANT

May 8, 2013

Author(s)

Mark A. Kedzierski

This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester-based aluminum oxide (Al2O3) nanoparticle dispersion (nanolubricant) at atmospheric pressure over the temperature range 288 K to 318 K. Two Al2O3 particles

R134a/Al 2 O 3 Nanolubricant Mixture Pool Boiling on a Rectangular Finned Surface

October 31, 2012

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a rectangular finned boiling surface. Nanolubricants with 10 nm diameter Al2O3 nanoparticles of various volume fractions (1AlO, 2AlO