A temperature jump in the water traveling through a pipe is delayed by the absorption of heat into the pipe wall. The convective transport of heat by the water and the conductive exchange with the interior pipe wall are described by a singular micromodel. The limiting form is a distributed microstructure model, which is successively better approximated by simpler firstand second-order kinetic m...

Nomenclature Ac collector area (m 2) Cb bond conductance (W/m·K) Cp specific heat (J/K·kg) De external pipe diameter (m) Di internal pipe diameter (m) FR heat removal factor hfi heat transfer coefficient (W/m 2·K) k thermal conductivity (W/m·K) ṁ mass flow rate (kg/sec) Qu useful energy per unit time (W) Ta ambient temperature (°C) Tpm average plate temperature (°C) UL overall heat loss coeffic...

This paper investigates the inflection-point instability that governs the flow disturbance initiated in the entrance region of a pulsating pipe flow. Under such a flow condition, the flow instability grows within a certain phase region in a pulsating cycle, during which the inflection point in the unsteady mean flow lifts away from the viscous effect-dominated region known as the Stokes layer. ...

-This research paper proposes the inspection system of heat pipe cooling for electronic devices, such as CPU in personal computer, laptop computer and so on. The inspection system is an essential part in production process of heat pipes CPU cooler. To ensure the high quality product, a 100% quality checking is taken into account. Generally, heat pipe inspection system is conducted by human ears...

The energy resources of nature are limited. According to the report from the International Energy Agency (IEA), there is 19% of the energy used for illumination. It's well known that LED is an excellent choice to instead the incandescent lamp for saving energy. But the other question comes out while the high power LED is applied. There is only about 20% of the input power converts to light ener...

Free convection effects and heat transfer due to a pulsating point heat source embedded in an infinite, fluid saturated, porous dusty medium are studied analytically. Both velocity and temperature fields are discussed in the form of series expansions in the Rayleigh number, for both the fluid and particle phases based on the mean heat generation rate from source and on the permeability of the p...

pheric and Planetary Sciences, Hampton University, Hampton, Virginia 23668, USA ([email protected]). National Institute of Aerospace, Hampton, Virginia 23666, USA. Center for Isotope Cosmochemistry and Geochronology, ARES, NASA-JSC, Houston, TX 77058, USA ([email protected]). Department of Geology and Geophysics, Louisiana State University, Baton Rouge, Louisiana 70803, USA (aagwebb@g...

The data presented in this article were the basis for the study reported in the research articles entitled 'Climate responsive behaviour heat pipe technology for enhanced passive airside cooling' by Chaudhry and Hughes [10] which presents the passive airside cooling capability of heat pipes in response to gradually varying external temperatures and related to the research article "CFD and wind ...