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Author: mark kedzierski

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61. Ralph Webb: A Pioneering Proselytizer for Enhanced Heat Transfer
Published: 10/1/1998
Author: Mark A Kedzierski
Abstract: Ralph Webb, a pioneer in enhanced heat transfer, proselytizes his field for the economic and technical benefit of industry. His mission has been, and always will be, the promotion of enhanced heat transfer technology. As a result, he has been instr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860771

62. A New Insitu Technique for Measuring the Concentration of Lubricant on a Boiling Heat Transfer Surface
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6110
Published: 1/1/1998
Authors: Mark A Kedzierski, Thomas J Bruno, Matt O'Neill
Abstract: The paper presents a technique for using the fluorescent properties and/or the harmonic focusing properties of several commercial lubricants to measure the concentration of lubricant on an aluminum vignetting target. It is planned to use the measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860122

63. Convective Boiling and Condensation Heat Transfer With a Twisted-Tape Insert for R12, R22, R152a, R134a, R290, R32/R134a, R32/R152a, R290/R134a, R134a/R600a
Published: 1/1/1998
Authors: Mark A Kedzierski, Min S. Kim
Abstract: Measured, local-average Nusselt numbers (Nu) for in-tube, convective boiling and condensation with a twisted-tape insert are presented for: R12, R22, R152a, R134a, R290, R32/R134a, R32/R152a, R290/R134a, and R134a/R600a. The heat transfer data were o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910464

64. 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

65. 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

66. 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

67. 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

68. 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

69. 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

70. 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