Development and investigation of a loop heat pipe with a high heat-transfer capacity

Maydanik, Yury F.; Pastukhov, Vladimir G.; Chernysheva, M.A.

doi:10.1016/j.applthermaleng.2017.11.084

Cited by 66 publications

(14 citation statements)

References 9 publications

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“…Generally, an ammonia-charged LHP is able to transport a heat load greater than 600 W with strong antigravity capability [35,36]; while the two LHPs using R134a as the working fluid in this work only have a heat transfer capacity a litter larger than 100 W. The obvious decrease in the heat transfer capacity is mainly caused by the difference in the relevant thermo-physical properties. That is because besides the system structural parameters, the heat transfer capacity of a LHP is strongly dependent on the thermo-physical properties of the working fluid especially the liquid surface tension and evaporative latent heat.…”

Section: Effect Of Gravitymentioning

confidence: 89%

Comparative study of two loop heat pipes using R134a as the working fluid

Wang

Lin

Bai

et al. 2020

Applied Thermal Engineering

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Section: Effect Of Gravitymentioning

confidence: 89%

Comparative study of two loop heat pipes using R134a as the working fluid

Wang

Lin

Bai

et al. 2020

Applied Thermal Engineering

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“…LHPs can make important contribution in development of solar thermal systems due to their potential for low thermal resistance as well as high thermal capacity and simple structure. For further details please refer to references [9], [22], [27], [28], [31], [32], [36] and [37]. Table 2.…”

Section: Discussionmentioning

confidence: 99%

“… Possibilities for using LHPs in energy efficient systems of recovery of low potential heat [9].  LHPs are a simple device with no moving parts that can transfer large quantities of heat over large distances [10].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of a novel solar trigeneration system

et al. 2019

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Loop heat pipes (LHPs) are high efficiency devices which can be used in solar systems. The main objectives of this research are to propose a novel solar combined cooling, heating and power (SCCHP) system based on loop heat pipe (LHP) evaporator, and to present thermodynamic analysis to improve the utilization of loop heat pipe in solar systems. Also a parametric analysis is carried out to investigate the effect of the key variable parameters on the system performance for three operation modes (solar mode, solar and storage mode and storage mode). The results showed that, for the solar mode and the solar and storage mode, the main source of the exergy destruction is the solar loop heat pipe evaporator while for the storage mode, the main source of the exergy destruction is the hot storage tank. The energy efficiency of the proposed system is 70.52% for the solar mode, 72.09% for the solar and storage mode, and 64.77% for the storage mode and the exergy efficiency of the proposed system is 12.36% for the solar mode, 14.78% for the solar and storage mode, and 47.45% for the storage mode.

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“…Another way of solving the problem of heat delocalization for powerful LED light sources and distributing their heat flux over a larger heat-transfer surface by using two-phase technology is to apply nontraditional heat pipe designs, such as loop [47][48][49][50] and pulsating [51][52][53][54] heat pipes. In the loop heat pipes, liquid moves under the influence of a significant pressure difference caused by the peculiarities of heat transfer processes in the evaporator and condenser.…”

Section: Recommendations For Using the Proposed Highpower Led Luminairementioning

confidence: 99%

Electro-optical characteristics of an innovative LED luminaire with an LED matrix cooling system based on heat pipes

Pekur¹,

Сорокин²,

Nikolaenko³

et al. 2020

SPQEO

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Widespread use of energy-saving LED lighting systems powered by renewable energy sources, solar energy in particular, will contribute to the improvement of global ecology. One of the structural elements of such lighting systems is LED luminaire. The authors of this article perform a first ever experimental study of electro-optical characteristics of the basic version of a compact high-power LED luminaire for indoor use. The particular feature of this lighting device is that its cooling system for the LED light source is based on heat pipes and concentric cooling rings. Such design allows ensuring the required cooling efficiency of the LED matrix. The revealed trends in optical and electrical parameters during temperature stabilization indicate that the proposed cooling system is highly efficient in maintaining normal thermal conditions of LED light sources with a power of up to 140.7 W and a luminous flux of up to 15083 lm. The results on determining spatial distribution of luminous flux of these luminaires indicate that they may be used for lighting large rooms with high ceilings. Scaling the basic modular design version of the cooling system allows increasing the power of the LED light source up to 600 W.

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Development and investigation of a loop heat pipe with a high heat-transfer capacity

Cited by 66 publications

References 9 publications

Comparative study of two loop heat pipes using R134a as the working fluid

Comparative study of two loop heat pipes using R134a as the working fluid

Thermodynamic analysis of a novel solar trigeneration system

Electro-optical characteristics of an innovative LED luminaire with an LED matrix cooling system based on heat pipes

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