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Author: mark kedzierski

Displaying records 81 to 90 of 91 records.
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81. Visual Measurement Technique for Analysis of Nucleate Flow Boiling (NISTIR 5519)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5519
Published: 10/1/1994
Authors: Mark A Kedzierski, J. M. Crowder, A. M. Jacobi, L. Zhang
Abstract: This report records a visual measurement technique for analyzing bubbles formed by nucleate flow boiling. The purpose of measuring these bubbles is to expand understanding the boiling process. By studying the behavior of these vapor bubbles, a better ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910588

82. Single-Phase Heat Transfer and Pressure Drop Characteristics of an Integral-Spine Fin Within an Annulus
Published: 6/1/1994
Authors: Mark A Kedzierski, M S Kim
Abstract: The laminar, single-phase heat transfer and friction characteristics of a porcupine-like surface (integral-spine-fin) within an annulus are presented. The heat-transfer coefficient was determined using a modified version of the Wilson Plot method on ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910592

83. Horizontal Nucleate Flow Boiling Heat Transfer Coefficient Measurements and Visual Observations for R12, R134a, and R134a/Ester Lubricant Mixtures
Published: 5/9/1993
Authors: Mark A Kedzierski, M P Kaul
Abstract: The heat transfer characteristics of horizontal nucleate flow boiling of R12, R134a, and R134a/Ester Lubricant mixtures were investigated both visually and calorimetrically.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910594

84. Horizontal Nucleate Flow boiling Heat Transfer Coefficient Measurements and Visual Observations for R12, R134a, and R134a/Ester Lubricant Mixtures (NISTIR 5144)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5144
Published: 3/1/1993
Authors: Mark A Kedzierski, M P Kaul
Abstract: The heat transfer characteristics of horizontal nucleate flow boiling of R12, R134a, and R134a/Ester Lubricant mixtures were investigated both visually and calorimetrically.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910595

85. Horizontal Flow Boiling of Single Component and Binary Refrigerant Mixtures (ER-8006-2)
Series: OTHER
Published: 1/1/1993
Authors: Mark A Kedzierski, David Didion
Abstract: This report contains three studies on refrigerant mixture heat transfer funded by NIST and EPRI (RP 80006-21). The first study, Visualization of Nucleate Flow for an R22/R114 Mixture and Its Components, is presented in section 1. It investigates the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910597

86. Simultaneous Visual and Calorimetric Measurements of R11, R123, and R123/Alkylbenzene Nucleate Flow Boiling (NISTIR 4948)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 4948
Published: 10/1/1992
Author: Mark A Kedzierski
Abstract: Bubble formation during horizontal flow boiling of trichlorofluoromethane (R11), 1,1-dichloro-2,2,2-trifluoroethane (R123) and two R123/alkylbenzene lubricant mixtures was investigated both visually and calorimetrically. The test fluid was pumped thr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910600

87. Causes of the Apparent Heat Transfer Degradation for Refrigerant Mixtures
Published: 8/9/1992
Authors: Mark A Kedzierski, J. H. Kim, David Didion
Abstract: This paper presents an investigation into the causes of the apparent heat transfer degradation associated with horizontal-annular flow evaporation of refrigerant mixtures. The apparent heat transfer degradation is the difference between the measured ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910599

88. Comparison of Experimental Measurements of Local Flow Boiling Heat Transfer Coefficients for R11 and R123
Published: 1/1/1991
Authors: Mark A Kedzierski, David Didion
Abstract: This paper presents a comparison of the measured horizontal, smooth-tube, flow boiling heat transfer coefficient of R11 to that of its proposed ozone safe replacement R123. The fluid properties of R11 and R123 are similar. The flow boiling data for t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910614

89. Practical Fin Shapes for Surface-Tension-Drained Condensation
Published: 5/1/1990
Authors: Mark A Kedzierski, R. L. Webb
Abstract: This paper introduces a new family of high-performance fin profiles for surface-tension-drained condensation. Previously described profiles for this situation have been defined in terms of the fin curvature and arc length. The existing profiles are g ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910621

90. Visualization of Nucleate Flow Boiling for an R22/R114 Mixture and Its Components
Published: 1/1/1990
Authors: Mark A Kedzierski, David Didion
Abstract: Visualization of bubble nucleation during forced-convective flow inside a horizontal, electrically heated quartz tube was done in order to establish a comparison of this phenomenon between refrigerant mixtures and their pure components. The specific ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910620



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