TITLE

Simultaneous measurements of the specific heat and thermal conductivity of suspended thin samples by transient electrothermal method

AUTHOR(S)
Bo Feng; Weigang Ma; Zhixin Li; Xing Zhang
PUB. DATE
June 2009
SOURCE
Review of Scientific Instruments;Jun2009, Vol. 80 Issue 6, p064901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The electrothermal technique is developed to simultaneously measure the specific heat and thermal conductivity of individual thin samples suspended across two heat sinks, resorting to pulsed direct currents with or without a dc offset. The temperature evolution due to Joule self-heating is recorded and compared with the numerical solutions of transient heat conduction equations using the finite volume method. The thermal conductivity is determined by the steady temperature level and the specific heat by the transient temperature rise or relaxation. This technique is applied to a 10 μm thick platinum wire and the thermal conductivity and specific heat are in good agreement with the literature values. In addition, the influences of thermal radiation and thermal boundary resistance between the sample and heat sinks on the experimental results are discussed.
ACCESSION #
42961877

 

Related Articles

  • IMPROVED DESIGN OF THE INTERMEDIATE STAGE OF A DRY DILUTION REFRIGERATOR. Uhlig, K. // AIP Conference Proceedings;4/9/2010, Vol. 1218 Issue 1, p641 

    Cryogen free dilution refrigerators (DR) have become very popular with scientists working at sub-Kelvin temperatures. Ease of operation, reliability and cost effectiveness are first-rate with these refrigerators. In our original cryostat, and in almost all commercial models available, the 3He...

  • Thermal therapy. Prophet, Graham // EDN Europe;Jul2006, Vol. 51 Issue 7, p21 

    The article reflects on this year's PCIM Exhibition held in Nuremberg, Germany. The conference features designs of conventional heatsinks and liquid cooling systems in response to the system-design demands. Also discussed in this section are some topics relating to thermal management that...

  • Two-Phase Flow in Micro-Channel Heat Sink Review Paper. Shkarah, Ahmed Jassim; Sulaiman, Mohd Yusoff Bin; Ayob, Md Razali bin Hj // International Review of Mechanical Engineering;Jan2013, Vol. 7 Issue 1, p231 

    The micro channel heat sink (MCHS) is the most widely used heat sink. It is continuously studied by different researchers and companies who improve the effectiveness and efficiency with which it removes heat from devices. This review paper focuses on two-phase flow in MCHS and includes the...

  • NUMERICAL SIMULATION OF THERMAL EFFECTS IN THIN ACTIVE LASER ELEMENTS. Girdauskas, Valdas; Budinavičus, Audrius; Aleknavičus, Aidas // International Conference: Radiation Interaction with Material & ;2012, p399 

    Temperature distribution, stresses and deformations inside proposed active element geometry were calculated using finite element method. Proposed element consists of two thin plates of active medium bonded to heat sinks, pumped in zig-zag manner. Dependencies of temperature, deformation and...

  • Numerical Study on Flow and Heat Transfer Performance of Rectangular Heat Sink with Compound Heat Transfer Enhancement Structures. Di Zhang; Shuai Guo; Zhongyang Shen; Yonghui Xie // Advances in Mechanical Engineering (Hindawi Publishing Corporati;2014, p1 

    Modern gas turbine blade is operating at high temperature which requires abundant cooling. Considering both heat transfer rate and pumping power for internal passages, developing efficient cooling passages is of great importance. Ribbed channel has been proved as effective heat transfer...

  • Temperature distributions in a heat dissipation system using a cylindrical diamond heat spreader on a copper heat sink. Hui, P.; Tan, H. S. // Journal of Applied Physics;1/15/1994, Vol. 75 Issue 2, p748 

    Introduces an analytical series solution for the problem of temperature distributions in a heat dissipation system consisting of a cylindrical heat spreader on a semi-infinite heat sink. Radial distribution of temperature at the interface and over the surface; Behavior of the average...

  • Transient Heat Transfer Measurements in Forced Flow of He II at High Velocities. Fuzier, S.; Van Stiver, S. W. // AIP Conference Proceedings;2006, Vol. 823 Issue 1, p129 

    Transient heat transfer is investigated in forced flow of He II for velocities up to 22 m/s. The flow is generated in a 10 mm ID, 0.85 m long straight test section instrumented with heaters, thermometers and pressure transducers. Rectangular heat pulses are generated in the flow and the...

  • EFFECTS OF THERMAL RADIATION AND HEAT TRANSFER OVER AN UNSTEADY STRETCHING SURFACE EMBEDDED IN A POROUS MEDIUM IN THE PRESENCE OF HEAT SOURCE OR SINK. Elbashbeshy, Elsayed M. A.; Emam, Tarek G. // Thermal Science;2011, Vol. 15 Issue 2, p477 

    The effects of thermal radiation and heat transfer over an unsteady stretching surface embedded in a porous medium in the presence of heat source or sink are studied. The governing time dependent boundary layer equations are transformed to ordinary differential equations containing radiation...

  • EFFECTS OF HEAT SOURCE/SINK ON MHD FLOW AND HEAT TRANSFER OVER A SHRINKING SHEET WITH MASS SUCTION. Bhattacharyya, Krishnendu // Chemical Engineering Research Bulletin;2011, Vol. 15 Issue 1, p12 

    An analysis is made to study the effects heat source/sink on the steady two dimensional magnetohydrodynamic (MHD) boundary layer flow and heat transfer past a shrinking sheet with wall mass suction. In the dynamic system, a uniform magnetic field acts normal to the plane of flow. The governing...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics