Topic
Heat pipe
About: Heat pipe is a research topic. Over the lifetime, 30354 publications have been published within this topic receiving 243669 citations. The topic is also known as: heatpipe & heat-pipe.
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TL;DR: In this paper, a biporous condenser-side wick design is proposed that facilitates a thicker vapor core, and thereby reduces the condenser surface peak-to-mean temperature difference by 37% relative to a monolithic wick structure.
63 citations
TL;DR: In this article, the authors proposed general equations for predicting the steady-state behavior of a loop heat pipe, linking its operating temperature to various fluidic and geometrical parameters.
Abstract: The present paper proposes general equations for predicting the steady-state behavior of a loop heat pipe, linking its operating temperature to various fluidic and geometrical parameters. The closed-form solutions determined for variousloop-heat-pipe operatingmodesarededucedfromtheequationsofapreviouslydevelopednumericalmodel. This new approach of the loop-heat-pipe modeling facilitates the identification of the physical mechanisms that influence its operating behavior. In addition, the transition heat flux between variable and fixed conductance modes can also be estimated. This simplified model has been validated for each loop-heat-pipe operating mode for various geometries and operating conditions. The present model could be a useful tool for the design of loop heat pipes. Nomenclature A = cross-sectional area cp = specific heat D = diameter e = thickness f = friction factor g = gravitational acceleration h = convective heat transfer coefficient hC = condensation heat transfer coefficient K = overall heat transfer coefficient or permeability k = thermal conductivity L = length lv = latent heat of vaporization _ m = mass flow rate P = pressure Q = heat transfer rate R = thermal resistance Rp = pore radius Re = Reynolds number S = heat exchange surface area T = temperature � H = relative elevation � = wetting angle � = dynamic viscosity � = density � = surface tension Subscripts
63 citations
TL;DR: In this article, a dynamic mathematical model for an evapo-reflective roof to improve space cooling in buildings for hot arid climates has been developed, which is composed of a concrete ceiling over which lies a bed of rocks in a water pool.
63 citations
TL;DR: In this paper, the performance of a new type of latent heat thermal energy storage (LHTS) device based on flat micro-heat pipe arrays (FMHPAs) with longitudinal rectangular fins is numerically studied by enthalpy-porosity technique based on finite volume method (FVM).
63 citations
Patent•
29 Jun 2005
TL;DR: In this article, a heat dissipating device for a CPU includes a chassis (10 ), a heat sink (20 ), a fan cover (50 ), and a fan (60 ), arranged radially and defining an inter space for receiving the connecting piece.
Abstract: A heat dissipating device for a CPU includes a chassis ( 10 ), a heat sink ( 20 ), a fan cover ( 50 ) and a fan ( 60 ) The heat sink includes a coin-shaped connecting piece ( 22 ) and a plurality of cooling fins ( 30 ) arranged radially and defining an inter space for receiving the connecting piece A plurality of airflow passages is formed between adjacent cooling fins A plurality of heat pipes ( 40 ) is attached to a periphery of the cooling fins and the chassis The fan cover partially surrounds the heat sink The fan is secured to the fan cover to provide forced airflow through the airflow passages of the cooling fins radially
63 citations