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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Patent•
12 Oct 2006TL;DR: In this article, heat dissipation devices for an LED lamp set with a plate-type heat spreader as the core unit are described. But the authors do not specify the design of these devices.
Abstract: This invention discloses heat dissipation devices for an LED lamp set with a plate-type heat spreader as the core unit. The plate-type heat spreader is either a flat-plate heat pipe or a metal plate embedded with heat pipes. The high-power LED lamps are thermally connected to the bottom surface of the heat spreader so that the heat generated by the LED lamps is absorbed by the evaporation region of the flat-plate heat pipe or the embedding heat pipes. The heat is spread by internal vapor motion of the working fluid toward different regions of the heat spreader. The top surface of the heat spreader is connected with a finned heat sink, where the heat is delivered to the ambient air. The hot air leaves by buoyancy through the openings on a lamp housing located above the finned heat sink. An alternative design is that the inner surface of the lamp housing is connected with the top surface of the plate-type heat spreader, with the heat dissipated out at the surface of the housing by natural convection.
77 citations
TL;DR: In this paper, the proposed strategies to improve the thermal efficiency of different industrial, domestic, and innovative heat pipe solar collectors (HPSCs) are summarized and discussed. But, to the best of our knowledge, a comprehensive review which surveys and provides an overview of the studies undertaken to improve thermal performance of HPS systems by implementing different strategies has not been published to date.
77 citations
TL;DR: In this article, the authors investigated the use of heat pipe vacuum tube (HPVT) collectors in a solar desiccant cooling set up and the experimentally evaluated efficiency of the HPVT collectors for one operating day varies between 0.6 and 0.7.
77 citations
TL;DR: In this paper, the performance of a solar cabinet drying system equipped with a heat pipe evacuated tube solar collector and thermal storage system with application of PCM was investigated and validated by experimental data.
77 citations
Patent•
13 Jun 1991TL;DR: In this paper, a micro heat pipe is formed by cutting a groove into the substrate opposite a site where devices have been formed or are to be formed, and a fraction of the pipe is filled with a coolant or other working fluid.
Abstract: A micro heat pipe, formed in a semiconductor substrate, carries heat from a region of heat flux in the substrate to a region of lower heat flux. The micro heat pipe is formed by cutting a groove into the substrate opposite a site where devices have been formed or are to be formed. Vapor deposited layers are then formed on the substrate to define the micro heat pipe. A fraction of the pipe is filled with a coolant or other working fluid and the pipe is sealed. A micro heat pipe may also be formed by etching a channel down into the substrate, oxidizing the surfaces of the channel, charging the channel with a cooling medium to fill a fraction of the channel and sealing the end of the channel. In operation, the working fluid evaporates in the region of high heat flux and condenses in the region of lower heat flux resulting in the transfer or redistribution of the fluid's heat of vaporization.
77 citations