Experimental Investigation of Flat Plate Cryogenic Oscillating Heat Pipe

Patel, Vivek; Mehta, Nirvesh; Mehta, Kamlesh; Badgujar, Amarish; Mehta, Siddharth; Bora, Nisha

doi:10.1007/s10909-019-02243-1

Cited by 12 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dimensions and details of the test section are shown in Figs. 3 [28,47] and 4. The hydraulic radius of the CL-FPOHP channel must be small enough so that the surface tension force overcomes the gravity force to develop two-phase flow within the CL-FPOHP.…”

Section: Development Of Cl-fpohp Test Sectionsmentioning

confidence: 99%

“…This flat-plate heat pipe is known as closed-loop flat-plate oscillating heat pipe (CL-FPOHP). The CL-FPOHPs differ significantly from traditional heat pipes in that they do not require a wick structure to move the condensed working fluid back to the evaporator section [24][25][26][27][28]. An oscillating heat pipe invented by Akachi [29] has been suggested in various electronics systems because of its high heat transfer capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, OHP exists as a simple small diameter capillary tube bent in many loops, namely TOHP (tubular oscillating heat pipe) and FPOHP (flat-plate oscillating heat pipe) as shown in Fig. 1a, b [28]. The FPOHP was developed to solve some drawbacks of TOHP [30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the channel profile on the thermal resistance of closed-loop flat-plate oscillating heat pipe

Mehta

Mehta²,

Patel

2020

J Braz. Soc. Mech. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

The closed-loop flat-plate oscillating heat pipe (CL-FPOHP) is a new two-phase heat transfer device for an effective thermal management in different systems. A number of theoretical and experimental investigations have been carried out on the CL-FPOHP in the past decades after its invention. However, due to the operational mechanism of the CL-FPOHP, the effects of channel profile on the thermal resistance have not been completely revealed so far. This paper aims at discussing the thermal resistance and thermal conductivity by changing the shape and size of the CL-FPOHPs channel. The thermal resistances of the CL-FPOHPs were investigated by varying the channel shape from square to circular, channel sizes from 2 × 2 mm 2 to 5 × 5 mm 2 , and heat load from 10 to 120 W. The pure copper was used to develop the CL-FPOHP and charged with the acetone with a charge ratio of 70%. The most suitable channel shape for the CL-FPOHP was found to be a square channel, and the most suitable channel size was observed to be 2 × 2 mm 2. The highest thermal conductivity of the CL-FPOHP reached to 2137 W/m °C. Keywords Flat-plate oscillating heat pipe • Two-phase heat transfer • Thermal resistance • Channel profile List of symbols Bo Bond number, g(l − v) r h 2 g Gravitational force (m/s 2) l Liquid density (kg/m 3) Subscripts CL-FPOHP Closed-loop flat-plate oscillating heat pipe FPOHP Flat-plate oscillating heat pipe TOHP Tubular oscillating heat pipe e Evaporator c Condenser l Liquid v Vapor W Watt L Distance of the two centers of the evaporator and condenser A Total cross-sectional area of CL-FPOHP

show abstract

Section: Development Of Cl-fpohp Test Sectionsmentioning

confidence: 99%