THERMAL PERFORMANCE AND DEVELOPMENT OF A DUAL EVAPORATOR LOOP HEAT PIPE

2013 ◽  
Vol 4 (1-2) ◽  
pp. 105-117 ◽  
Author(s):  
Roger R. Riehl
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe

INVESTIGATION OF THE THERMAL PERFORMANCE OF MINIATURE LOOP HEAT PIPE WITH WATER-COPPER NANOFLUID

2013 ◽  
Vol 4 (3) ◽  
pp. 181-196
Author(s):  
Xiaowu Wang ◽  
Zhenping Wan ◽  
Yanxiao Xu ◽  
Yong Tang
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe

Thermal Performance of a Miniature Loop Heat Pipe for Cooling High Heat Flux Components

2020 ◽  
Vol 2020 (0) ◽  
pp. 0093
Author(s):  
Noriyuki Watanabe ◽  
Takuji Mizutani ◽  
Hosei Nagano
Keyword(s):  
Heat Flux ◽  
Heat Pipe ◽  
Thermal Performance ◽  
High Heat ◽  
High Heat Flux ◽  
Loop Heat Pipe

Thermal performance of miniature loop heat pipe with graphene–water nanofluid

2016 ◽  
Vol 93 ◽  
pp. 957-968 ◽  
Author(s):  
Trijo Tharayil ◽  
Lazarus Godson Asirvatham ◽  
Vysakh Ravindran ◽  
Somchai Wongwises
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe

scholarly journals Performance of an Environmentally Friendly Alternative Fluid in a Loop Heat Pipe-Based Battery Thermal Management System

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7738
Author(s):  
Marco Bernagozzi ◽  
Nicolas Miché ◽  
Anastasios Georgoulas ◽  
Cedric Rouaud ◽  
Marco Marengo
Keyword(s):  
Environmental Impact ◽  
Heat Pipe ◽  
Thermal Management ◽  
Thermal Performance ◽  
Management System ◽  
Maximum Temperature ◽  
Loop Heat Pipe ◽  
Fast Charge ◽  
Thermal Management System ◽  
Thermal Medium

The present investigation aims to devise a thermal management system (TMS) for electric vehicles able to improve on limitations like charging time and all-electric range, together with the safety and environmental impact of the chosen thermal medium. A research gap is identified, as focus is often on addressing system thermal performance without considering that the thermal medium must not only provide suitable performances, but also must not add risks to both passengers and the environment. Thus, this work proposes an innovative cooling system including graphite sheets and a Loop Heat Pipe, filled with Novec™ 649 as working fluid, due to its exceptional environmental properties (GWP = 1 − ODP = 0) and safety features (non-flammable, non-toxic, dielectric). A three-cell module experimental demonstrator was built to compare temperatures when the proposed TMS is run with Novec™ 649 and ethanol. Results of testing over a bespoke fast charge driving cycle show that Novec™ 649 gave a faster start-up and a slightly higher maximum temperature (0.7 °C), meaning that the gains in safety and lower environmental impact brought by Novec™ 649 came without lowering the thermal performance. Finally, the TMS was tested under three different fast charge conditions (1C, 2C, 3C), obtaining maximum temperatures of 28.4 °C, 36.3 °C and 46.4 °C, respectively.

scholarly journals EXPERIMENTAL STUDY OF THERMAL PERFORMANCE OF A FLAT LOOP HEAT PIPE

2015 ◽  
Vol 6 ◽  
Author(s):  
John P. Kizito ◽  
Md Monir Hossain
Keyword(s):  
Experimental Study ◽  
Heat Pipe ◽  
Thermal Performance ◽  
Loop Heat Pipe

scholarly journals THERMAL PERFORMANCE OF A LOW-COST LOOP HEAT PIPE

Equipment ◽  
2006 ◽  
Author(s):  
J. Perez ◽  
J. Ku ◽  
P. Rogers ◽  
H. Nagano
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Low Cost ◽  
Loop Heat Pipe

Effect of Vibrations on Thermal Performance of Miniature Loop Heat Pipe for Avionics Cooling: An Experimental Analysis

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
Prem Kumar ◽  
Sameer Khandekar ◽  
Yuri F. Maydanik ◽  
Bishakh Bhattacharya
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Longitudinal Vibration ◽  
Decisive Role ◽  
Fluid Distribution ◽  
Loop Heat Pipe ◽  
Two Phase ◽  
Horizontal Orientation ◽  
Acceleration Rate ◽  
Compensation Chamber

Abstract A loop heat pipe (LHP) is an efficient passive, two-phase heat transfer device which can transport heat up to large distances (over ∼ 5 m) even in the anti-gravity mode. It is necessary to miniaturize the LHPs to make them suitable for space-constrained avionics applications. However, before incorporating these devices under high-vibrational environmental conditions such as those encountered in avionics applications, it is imperative to study their thermal performance under such loads. With the aim of understanding the effect of acceleration and frequency of imposed vibration on thermal performance of miniature LHP (mLHP), a contextual experimental study has been reported here using an ammonia charged mLHP (8 mm evaporator diameter; titanium wick) in the horizontal orientation for two cases: (a) without vibration and (b) with the transverse and longitudinal harmonic vibrations (1–4g, frequencies 15–45 Hz, and sine sweep 15–45 Hz in 1 s). With start-up loads between 5 W and 8 W, the LHP can transfer heat load of about 120 W at safe evaporation temperature of 70 °C. Results show that for the transverse vibration, acceleration rate and frequency of imposed vibrations do not affect the thermal performance of mLHP. For the longitudinal vibration, the device performance gets noticeably enhanced with increased acceleration. The decisive role of heat leak (from evaporator to the compensation chamber (CC)) with imposed vibrations is clearly observed, and its link to the internal fluid distribution can be discerned from data trends.

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