heat transferhydraulic resistanceflow across tubesspiral groovesAn experimental study has been made of the heat transfer and hydraulic resistance in air flow across a single-row bundle of tubes with spiral grooves on the exterior surface and of a bundle of smooth......
5.1.4 Heat pipe heat exchangers A heat pipe is a hermetically sealed pipe or series of pipes, containing a heat transfer working fluid used to transfer heat. The pressure in the heat pipe depends on the saturation temperature of the internal working fluid. The material for the pipe has commo...
Heat transfer in solids is typically conducted through either electrons or atomic vibrations known as phonons. In a vacuum, heat has long been thought to be transferred by radiation but not by phonons because of the lack of a medium1. Recent theory, however, has predicted that quantum fluctuati...
作者: A.,Baïri,and,N.,Laraqi 摘要: In this paper the heat transfer across the interface between two cylinders in axial contact for which the surfaces are obtained by machining in a lathe was studied. The macro-contact generated by this process has a spiral shape. The governing equations...
HEAT TRANSFER ACROSS A TURBULENT LIQUID FILM IN A TURBULENT VAPOUR STREAM. RATE OF... Analysis of data on heat transfer across laminar liquid films in turbulent vapor streams leads to a correlation in terms of liquid film Reynolds number. Th... DE Hartley 被引量: 0发表: 1963年 The cruise...
Contributions to the Theory of Heat Transfer through a Laminar Boundary Layer An approximation to the heat transfer rate across a laminar incompressible boundary layer, for arbitrary distribution of main stream velocity and of wall temperature, is obtained by using the energy equation in von Mises's...
This paper gives the report of experiment investigation of heat transferenhancement of air flowing across petal-form fin tubes. Seven petal-form fin tubeswith fin height of h/Do=0.0947 to 0. 126 and fin pitch of p/Do =0.0526 to 0. 132have been tested. The mechanism of heat transfer enha...
2.2.2Heat pipe Heat pipe(HP), a high-efficiency heat transfer component with superior characteristics such as flexibility and compactness, was utilized in thermal control for various devices[48]. There are three primary components in a typicalHP:evaporator, adiabatic, and condenser components. The ...
Examples are the loss of heat from a radiator or n.散热器 unlagged steam pipe to the ambient air of the room and a. 未保温的, 未隔热的 heat transfer in furnaces and other high-temperature gas-heating equipment. 1. Nature of Heat Flow The two mechanisms are mutually independent and ...
A micro heat pipe is defined as a heat pipe in which the mean curvature of the liquid–vapor interface is comparable in magnitude to the reciprocal of the hydraulic radius of the total flow channel. From: Heat Transfer in Aerospace Applications, 2017 ...