Heat Pipes by P. D. Dunn, D. A. Reay

By P. D. Dunn, D. A. Reay

A complete, updated insurance of the idea, layout and manufacture of warmth pipes and their functions. This most recent version has been completely revised, up-dated and multiplied to provide an in-depth insurance of the hot advancements within the box. major new fabric has been extra to all of the chapters and the functions part has been completely rewritten to make sure that topical and demanding functions are safely emphasized. The bibliography has been significantly enlarged to include a lot priceless new info. hence readers of the former variation, which has confirmed itself because the normal textual content at the topic, will locate a lot extra facts of curiosity while new readers will locate the enormous quantity of priceless information integrated within the appendices an vital resource of reference.

Show description

Read or Download Heat Pipes PDF

Similar mechanical engineering books

Handbook Of Mechanical Engineering Calculations

Resolve any mechanical engineering challenge fast and simply This depended on compendium of calculation tools provides quickly, actual strategies to the hardest day by day mechanical engineering difficulties. you will discover numbered, step by step methods for fixing particular difficulties including worked-out examples that provide numerical effects for the calculation.

ICREGA’14 - Renewable Energy: Generation and Applications (Springer Proceedings in Energy)

This publication collects the edited and reviewed contributions awarded within the third foreign convention on Renewable power: iteration and purposes” ICREGA’14, equipped by means of the UAE college in Al-Ain. This convention goals to disseminate wisdom on equipment, guidelines and applied sciences with regards to renewable strength and it recognizes the management of the UAE which dedicated to a 7% renewable strength goal via 2020.

Principles of Heat Transfer, 7th Edition

Rules of warmth move was once first released in 1959, and because then it has grown to be thought of a vintage in the box, atmosphere the factors for insurance and association inside of all different warmth move texts. The e-book is designed for a one-semester path in warmth move on the junior or senior point, even though, flexibility in pedagogy has been supplied.

Applying the ASME codes : plant piping and pressure vessels, Edition: 2nd

Folllowing the good fortune of his first e-book relating to Hydraulics, Pipe movement, commercial HVAC & software platforms, Mister Mech Mentor now deals an all-new, easy-to-read choice of chapters that includes ASME Piping & strain Vessel Code functions. Written in a pleasant variety, this ebook presents the basic merits of guide by means of a private mentor who explains why and the way, whereas instructing in all probability risky classes in physics and engineering layout.

Extra resources for Heat Pipes

Sample text

R is positive in the evaporator section and negative in the condensing section. 1 to 100. r R^ is related to the radial rate of mass injection or removal per unit length dm as follows dz 1 dm 2TT|J dz v .. 1 The radial and axial Reynold's numbers are related for uniform evaporation or condensation rates, by the equation, R r R = -± ... 2 r 4 z where z is the distance from either the end of the evaporator section or the end of the condenser section. 4, that provided the flow is laminar, the pressure drop due to viscous forces in a length I is equal to the kinetic head when 38 Dunn & Reay R a * " 32 R r " 32 If we substitute 4R I for the evaporator or condenser region we find that the condition reduces to R r = 8 ...

TV £ v — Lr = 2a„T £ p Lr v 2 8 2 '* * ' ° * z K z The mechanism of bubble formation depends strongly on the wetting characteristics of the heating surface. 4. 26a. Bubbles form most readily if the surface is nonwetting. In addition to wetting nucleation sites are necessary for bubble formation. Nucleation sites are provided by scratched or rough surfaces and by the release of absorbed gas. 26b shows how a bubble forms in a crevasse in a surface. As might be expected a much higher superheat is required to form bubbles on a clean, smooth surface.

4 B o i l i n g from wicked s u r f a c e s . There is now a considerable litera­ ture on boiling from wicked surfaces. The work reported includes measurements on plane surfaces and on tubes, the heated surfaces can be horizontal or vertical, and either totally immersed in the liquid or evaporating in the heat pipe mode. Water, organics and liquid metals have all been investigated. The effect of the wick is to further complicate the boiling process since in addition to the factors referred to in the section on boiling from smooth surfaces the wick provides sites for additional nucleation and significantly modifies the movement of the liquid and vapour phases to and from the heated surface.

Download PDF sample

Rated 4.31 of 5 – based on 11 votes