4 edition of Heat Pipes and Capillary Pumped Loops found in the catalog.
Heat Pipes and Capillary Pumped Loops
Ga.) National Heat Transfer Conference 1993 (Atlanta
by American Society of Mechanical Engineers
Written in English
|Contributions||Albert J. Juhasz (Editor), Amir Faghri (Editor), American Society of Mechanical Engineers Heat Transfer Division (Corporate Author), Tom Mahefkey (Editor)|
|The Physical Object|
|Number of Pages||101|
Loop heat pipes • Capillary pumped loops (CPL), and loop heat pipes (LHP), are an attractive alternative for heat regulation. In the LHP the capillary pumped evaporator is used instead of a boiler. • Such an evaporator is more flexible from the point of view of its orientation space and is more compact. Capillary Evaporator, Loop Heat Pipe, Numerical Simulation, Pore Network Model, Two-Phase Heat Transfer 1. Introduction Loop heat pipes (LHPs) and capillary pumped loops (CPLs) have attracted attention as advanced thermal control devices of spacecrafts, electronic devices, etc. The LHP and CPL require no external power to drive workingFile Size: 3MB.
An important heat pipe design consideration is the amount of power a heat pipe is capable of transferring. Learn about ACT's standard heat pipe transport limits, which are dependent on variables including operating temperature, wick selection and fluid properties. For a custom solutions contact our team of engineers. Heat Pipes and Capillary Pumped Loops, HTD , , El-Genk, M. S., and L. Huang, "An Experimental Investigation of Low Temperature Heat Pipe Response to Transient Heating". Proc. 8th International Heat Pipe Conference,
Capillary pumped loops (CPLs) are two-phase thermal control devices which, like heat pipes, use surface tension forces to circulate a cooling fluid from an evaporator to a condenser. The pressure difference for fluid circulation is developed in the pores Cited by: 3. A cylindrical capillary pumped loop evaporator operating under steady-state conditions was studied using a two-dimensional numerical model. Parameters affecting the phase conditions in the wick structure and thermal-fluid behavior in Cited by:
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Loop Heat Pipes and Capillary Pumped Loops- an Applications Perspective Dan Butler, Jentung Ku, Theodore Swanson NASA/GSFC, CodeGreenbelt, MD ()e-mail: @ Abstract.
Capillary pumped loops (CPLs) and loop heat pipes (LHPs) are versatile two-phase heat transfer devices which. A loop heat pipe (LHP) is a two-phase heat transfer device that uses capillary action to remove heat from a source and passively move it to a condenser or are similar to heat pipes but have the advantage of being able to provide reliable operation over long distance and the ability to operate against gravity.
They can transport a large heat load over a long distance. As a result, capillary Heat Pipes and Capillary Pumped Loops book loops (CPL) and loop heat pipes (LHP) have been identified as the next generation of heat pipe technology for S/C.
Butler. Modeling Loop Heat Pipes and other Capillary Devices. The methods for modeling LHPs and capillary pumped loops (CPLs) are very different from those used to model heat pipes.
Unlike a heat pipe, self-pumping loops require full thermohydraulic modeling of the fluid and the thermal-structural environment.
Pulsating (Oscillating) heat pipes. Loop heat pipes and capillary pumped loops. Microheat Pipes. Use of electrokinetic forces. Rotating heat pipes.
Miscellaneous types. References. Chapter 7. Applications of the heat pipe. Broad areas of application. Heat pipes in energy storage systems. Heat pipes in. Capillary pumped loops (CPLS) and loop heat pipes (LHPS) are versatile two-phase heat transfer devices which have recently gained increasing acceptance in space applications.
Both systems work based on the same principles and have very similar designs. Heat Pipes - Kindle edition by Dunn, P., Reay, David.
Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Heat Pipes.5/5(1).
Heat Convection in Micro Ducts focuses on the fundamental physics of convective heat transfer in microscale and specific applications such as: microchannel heat sinks, micro heat pipes, microcoolers and micro capillary pumped loops.
This book will be of interest to the professional engineer and graduate student interested in learning about heat Cited by: Attention is also given to the heat pipe components: working fluids and their properties, the wicks, and their different internal configuration (porous, grooved, arteries).
Finally the main concepts are described: constant conductance, variable conductance, thermal diodes, capillary pumped loops and loop heat pipes. Get this from a library. Heat pipes and capillary pumped loops: presented at the 29th National Heat Transfer Conference, Atlanta, Georgia, August[Amir Faghri; Albert J Juhasz; Tom Mahefkey; American Society of Mechanical Engineers.
Heat Transfer Division.;]. Introduction. The behaviour of the capillary pumped loop (CPL) and/or loop heat pipe (LHP) is very sensitive to transient phases, e.g. startup and heat load step.Also in steady state, loop instabilities are often observed, that may be critical for loop by: Loop Heat Pipes (LHP) and Capillary Pumped Loops (CPL) The Loop Heat Pipe (LHP) and Capillary Pumped Loop (CPL) are more advanced types of heat pipes.
These loops separate, concentrate and optimize the capillary pumping action in the evaporator section (See Figure 3). Get this from a library. Heat pipes. [D A Reay; P A Kew; P D Dunn] -- "This latest edition has been extensively revised and expanded, with new information on the underlying theory of heat pipes and heat transfer, data on pulsating heat pipes and capillary pumped loops.
During heat pipe operation, the working fluid evaporates in the evaporator and condenses in the condenser, transferring the latent heat from one end of the heat pipe to the other. The liquid condensate is passively returned to the evaporator by capillary forces in the wick.
The maximum power that the heat pipe can carry and still return the condensate by capillary forces is the. Capillary pumped loop (CPL) and loop heat pipe (LHP) are passive two-phase heat transport devices. They have been gaining importance as a part of the thermal control system of spacecraft. Loop Heat Pipes combine the advantages of both heat pipes and Capillary Pumped Loops, while overcoming the limitations of each.
Loop Heat Pipes provide very high thermal transport capacities; they can transport heat over long distances, through small cross-sectional tubes and have the capillary pumping capacity to overcome high gravitational by: Loop heat pipes (LHP’s) are two-phase heat transfer devices that utilize the evaporation and condensation of a working fluid to transfer heat, and the capillary forces developed in fine porous wicks to circulate the fluid.
The LHP was first developed in the former Soviet Union in the early ’s , about the same time that the capillary. In addition to MEMS-based micro-grooved heat pipes, some other mini- or micro-scale heat pipes, such as capillary pumped loops (CPLs) [60–64], loop heat pipes (LHPs) [65–69], oscillating heat pipes (OHPs) [70–75], and vapor chambers (VCs) [76–80] as shown Fig were also successfully constructed on silicon substrates by means of Cited by: 1.
The Paperback of the Heat Pipes by P. Dunn at Barnes & Noble. FREE Shipping on $35 or more. B&N Outlet Membership Educators Gift Cards Stores & Events Help Auto Suggestions are available once you type at least 3 letters. Use up arrow (for mozilla firefox browser alt+up arrow) and down arrow (for mozilla firefox browser alt+down arrow) to Pages: This latest edition of has been extensively revised and expanded, with new information on the underlying theory of heat pipes and heat transfer, data on pulsating heat pipes and capillary pumped loops, new chapters on design and on electronics 3/5(1).
Capillary pumped loops (CPLs) and loop heat pipes (LHPs) are versatile two-phase heat transfer devices which have recently gained increasing acceptance in space applications.
Both systems work based on the same principles and have very similar designs. Nevertheless, some differences exist in the construction of the evaporator and the hydro Cited by: Heat Pipe Science and Technology, Second Edition by Dr.
Amir Faghri Written to cover simple, intermediate, and advanced approaches to the theoretical and experimental analysis of heat pipes, this second edition emphasizes the physics and mathematics of heat pipes as well as the related technological and experimental issues.
Reflecting the advancements in heat pipe. Thermoregulation of Loops with Capillary Pumping for Space Use Two-phase heat-transfer capillary pumped loops (CPL) are a promising basis for development of a new generation of thermal regulation systems of space vehicles. It is assumed that such systems will have considerably better performance characteristics than traditional one Cited by: