Capillary limit in the wick-type heat pipe
WebJun 1, 2024 · The total length of heat pipe is 800 mm, the o.d. and i.d. of the heat pipe are 28 mm, 24 mm, respectively. Double-layer mesh, 2 mm, are rolled into a wick and welded on the inner wall of heat pipe. The container and screen mesh wick are … WebKeywords: heat pipe, thermosyphon, capillary pumped loop, energy conservation, renewable energy, solar energy, geothermal 1. ... and with UHMW Approach for Data Center Cooling Using Heat Pipe Based Cold polyethylene wick and acetone as the working fluid was designed Energy Storage System, 26th IEEE SEMI-THERM, Proceedings of the …
Capillary limit in the wick-type heat pipe
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WebTwo-phase cooling systems using wicks offer reliable and high heat flux cooling capability, however, the maximum heat removal capacity is related to capillary pumping limit and wick superheat. WebMay 23, 2012 · Experimental study on the performance characteristics of a cylindrical heat pipe having a screen wick subject to multiple heat sources Applied Thermal Engineering, Vol. 126 Operation characteristics of a new-type loop heat pipe (LHP) with wick separated from heating surface in the evaporator
Web27 rows · Mar 4, 2012 · The wicking limit or capillary limit can be a constraint at higher temperatures for sodium heat pipes. This condition occurs when an applied heat flux causes the liquid in the wick structure to evaporate faster than it can be supplied by the … Web@misc{etde_5261387, title = {Capillary limit in heat pipes} author = {Shishido, I, Ohtani, S, and Oishi, I} abstractNote = {Permeability and apparent diffusivity within a heat pipe wick were measured over a wide range of moisture content. Obtained data showed a strong dependence on the saturation of working fluid. By use of the results, saturation …
Webthe so-called entrainment limit, capillary limit, sonic limit or boiling limit according to cause. These limits may be strongly dependent on wick material, working fluid and operating … WebApr 24, 2024 · Wicks in heat pipes are classified into three groups: sintered, groove and mesh types. The wick structure ensures that the liquid phase of working fluid returns to the evaporator by capillary force. This paper includes the study of wick structure and to find the optimized wick structure.
WebAbstract: The maximum heat load that a heat pipe can sustain at steady state is governed by the balance between the capillary pressure provided by the wick and the flow …
top 100 simpsons charactersWebMar 13, 2014 · This limit is commonly called the capillary limitation or hydrodynamic limitation. The capillary limit is the most commonly encountered limitation in the operation of low-temperature heat pipes. It occurs when the pumping rate is not sufficient to provide enough liquid to the evaporator section. top 100 sight words for kindergartenWebNov 1, 1989 · This paper describes the design, testing, and theoretical capillary limit prediction of a new heat pipe configuration, which is the concentric annular heat pipe. The concentric annular heat pipe is made of two concentric pipes of unequal diameters that create an annular vapor space. With this arrangement, capillary wicks can be placed on … top 100 single charts 2022WebWalker et al. [30] studied the capillary limit of a self-venting sodium heat pipe and a grooved wick heat pipe. When the evaporator was elevated by 0.25 cm, 1.52 cm, and 2.54 cm, the capillary limit for the grooved wick heat pipe occurred at operating powers of 846 W, 546 W, and 346 W. For the self-venting sodium heat pipe, when the evaporator ... top 100 single charts aktuellWebOct 4, 2024 · A heat pipe is provided having a hollow body defining an interior vapor space, evaporator and condenser regions, a wick structure lining an inner wall of the hollow … top 100 singers of all timeWebUsing the capillary length, the capillary heights of tubes with different diameters can be calculated in Eq. 21.4.The results are depicted in Fig. 21.2. Fig. 21.2 a shows the … top 100 singers of all time 2023WebEffect of the wick characteristics on the thermal behaviour of a Lhp ... Capillary limit of evaporator wick in alkali metal thermal-to-electric converters Journal of Thermophysics and ... R.E.N.; Wu, Q.S. 2007: Heat transfer in loop heat pipes capillary wick : Effect effective thermal conductivity Journal of Thermophysics and ... top 100 singles 1989