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Author: mark kedzierski

Displaying records 71 to 80 of 90 records.
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71. Horizontal Convective Condensation of Alternative Refrigerants Within a Micro-Fin Tube
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6095
Published: 12/1/1997
Authors: Mark A Kedzierski, J Goncalves
Abstract: This paper presents Local convective condensation Measurements for four refrigerants: R134, R410A (R32/R125, 50/50 % mass), R125, and R32 in a micro-fin tube. Both heat transfer and pressure drop measurements are provided. The heat transfer degrada ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860754

72. Effect of Inclination on the Performance of a Compact Brazed Plate Condenser and Evaporator
Published: 1/1/1997
Author: Mark A Kedzierski
Abstract: This study experimentally quantified the change in heat transfer and pressure drop associated with tilting a compact brazed plate heat exchanger from the intended vertical position. Both clockwise and counterclockwise rotations within a plane perpend ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910466

73. Horizontal Flow Boiling of Alternative Refrigerants Within a Fluid Heated Micro-Fin Tube.
Published: 11/16/1996
Authors: M P Kaul, Mark A Kedzierski, David Didion
Abstract: This paper presents local, fluid-heated, flow boiling measurements for three refrigerant mixtures: [1] R410B (R32/125, 45/55 % mass), [2] R32R134a (28/72 % mass) and [3] R407C (R32/125/134a, 25/23/52 % mass). Flow boiling heat transfer coefficients f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910508

74. Enhancement of R123 Pool Boiling by the Addition of N-Hexane (NISTIR 5780)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5780
Published: 3/1/1996
Author: Mark A Kedzierski
Abstract: This paper presents the heat transfer data used to file international patent WO 94/18282. The data consisted of pool boiling performance of a GEWA-TTM surface for three fluids: (1) pure R123, (2) R123/n-hexane (99/1), and (3) R123/n-hexane (98/2). Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910509

75. Single-Phase Heat Transfer and Pressure Drop Characteristics of an Integral-Spine Fin Within an Annulus (NISTIR 5454)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5454
Published: 1/1/1996
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=910507

76. Calorimetric and Visual Measurements of R123 Pool Boiling on Four Enhanced Surfaces (NISTIR 5732)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5732
Published: 11/1/1995
Author: Mark A Kedzierski
Abstract: Pool boiling of R123 on four commercial enhanced surfaces was investigated both calorimetrically and visually. The four surfaces were: (1) Turbo-BII(TM) (2) High-Flux(TM) (3) GEWA-K(TM), and (4) GEWA-T(TM). The surfaces were either machined or solder ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910534

77. Calorimetric and Visual Measurements of R123 Pool Boiling on Four Enhanced Surfaces.
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5732
Published: 11/1/1995
Author: Mark A Kedzierski
Abstract: Pool boiling of R123 on four commercial enhanced surfaces was investigated both calorimetrically and visually. The four surfaces were: (1) Turbo-BII(TM) (2) High-Flux(TM) (3) GEWA-K(TM), and (4) GEWA-T(TM). The surfaces were either machined or solder ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916851

78. Effect of Inclination on the Performance of a Compact Brazed Plate Condenser and Evaporator (NISTIR 5767)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5767
Published: 11/1/1995
Author: Mark A Kedzierski
Abstract: This study experimentally quantified the change in heat transfer and pressure drop associated with tilting a compact brazed plate heat exchanger from the intended vertical position. Both clockwise and counterclockwise rotations within a plane perpend ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910537

79. 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

80. 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



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