... 07 03 2024 experimental techniques energy systems conduction radiative heat transfer thermal systems Heat pumps (HPs) have become widely used for both space heating and cooling in buildings, but to fully realize their energy efficiency potential, they need to be coupled...

...Z. Annasabi; F. Erchiqui; M. Souli This paper concerns the joint application of the B-spline method and the Kirchhoff transformation to solve the nonlinear problem of thermal conduction with radiation type boundary conditions. The proposed method requires few iterations, sometimes none, for solids...

...C. Y. Wang The basic problem of steady-state heat conduction in a ring with internal heat generation and convective boundary conditions is considered. An exact solution is found for the ring with a rectangular cross section and an efficient Ritz method is presented for general cross sections...

...Hao Wu; Nan Gui; Xingtuan Yang; Jiyuan Tu; Shengyao Jiang Radiative and conductive heat transfer is fairly important in the nuclear pebble bed. A continuum model is proposed here to derive the effective thermal conductivity (ETC) of pebble bed. It is a physics-based equation determined...

...Sajad Yazdani; Hyun-Young Kim; Michael Thompson Pettes A device for measuring a plurality of material properties is designed to include accurate sensors configured to consecutively obtain thermal conductivity, electrical conductivity, and Seebeck coefficient of a single sample while maintaining...

... in the 4 μ m aluminum layer from 613 °C to 301 °C. Introducing realistic anisotropy and inhomogeneity in the thermal conductivity (TC) of the CVD diamond has no significant effect on heat transfer if the aluminum film is on the CVD diamond growth face (with the highest TC). However, if the aluminum layer...

... manuscript received July 16, 2018; published online August 28, 2018. Assoc. Editor: Ali Khounsary. 04 11 2017 16 07 2018 Conduction Heat and mass transfer In metallurgical industry, continuous casting technology has been universally applied for the production of steel slabs. One...

... established models for closed-cell polymer foams, the extinction coefficient and the effective thermal conductivity are obtained. The effect of opacifiers is modeled using (1) an effective refractive index for the polystyrene walls within a cell model for the EPS and (2) a superposition of extinction due...

... ∂ 2 g ∂ x j ∂ x k ( x j − μ j ) ( x k − μ k ) + ⋯ Table 2 Ball grid array package parameters Thickness (mm) Mean conductivity (W/(m K)) Conductivity deviation Solder 0.15 10.05 1.00 Underfill...

...Fatma Habbachi; Fakhreddine S. Oueslati; Rachid Bennacer; Afif Elcafsi This paper is a numerical study conducted to investigate the conjugate flow and heat transfer occurring in three-dimensional (3D) natural convection. A cubical enclosure partially filled with porous block (central cubic...

... 10 2017 06 05 2018 Conduction Heat transfer Melting Manufacturing Solidification There is a wide range of additive manufacturing (AM) techniques currently available where an appropriate technique is chosen based on application requirements such as the mechanical strength...

... 10 2017 04 04 2018 Conduction The phenomena of spreading (constriction) and contact resistance are illustrated in Fig. 1 , a contour plot of adiabats and isotherms within contacting materials of thermal conductivities k 1 and 2 k 1 prepared using the solution by Crowdy [ 1...

... January 23, 2018; final manuscript received April 19, 2018; published online June 8, 2018. Assoc. Editor: George S. Dulikravich. 23 01 2018 19 04 2018 Conduction Electronic cooling Thermophysical properties An integrated circuit's junction (or channel) temperature is a key...

... a class of many-particle thermal diodes: the diodes allow heat conduction from one direction with invisibility, but prohibit the heat conduction from the inverse direction with visibility. This work reveals a different mechanism for thermal camouflage and thermal rectification by using composites...

... the conduction band cone can be obtained in suspended graphene with gate contacts [ 30 ]. In graphene over a SiC substrate, it is due to chemical effects (see for example Ref. [ 31 ] where other cases are discussed as well). The LO and TO phonon distributions at 10 ps are shown in Figs. 1 and 2...

... optimization loop, an initial study was conducted to narrow down the design space. The width and height of the fins were kept constant, same as D 0 , whereas the number of fins was varied. The results of the initial study are shown in Fig. 9 . The heat-sink with 22 fins is performing better in both...

.... 15 11 2017 18 04 2018 Conduction Experimental techniques Thermodynamics invisible cloaks have aroused great research interests in the community since the pioneering propose of the transformation thermodynamics [ 1 ]. Up to date, thermal cloak is typically generated from two...

...] Arpaci , V. , 1966 , Conduction Heat Transfer , Addison-Wesley , Reading, MA . [5] Yener , Y. , and Kakac , S. , 2008 , Heat Conduction , 4th ed. , Taylor & Fancis , London . [6] Carslaw , H. S. , and Jaeger , J. C. , 1959 , Conduction of Heat in Solids , 2nd ed...

...X. F. Hu; W. A. Yao; S. T. Yang Modeling of steady-state thermal conduction for crack and v-notch in anisotropic material remains challenging. Conventional numerical methods could bring significant error and the analytical solution should be used to improve the accuracy. In this study, crack and v...

... References [1] Choi , S. U. S. , and Eastman , J. A. , 1995 , “ Enhancing Thermal Conductivity of Fluids With Nanoparticles ,” International Mechanical Engineering Congress and Exhibition , San Francisco, CA, Nov. 12–17, pp. 99 – 106 . https://ecotert.com/pdf/196525_From_unt-edu.pdf [2...