Results 21 to 30 of about 106,281 (264)

Perbandingan Kemampuan Pelepasan Panas Pada Alat Penukar Panas Radiator Straight Fin Jenis Circular Cylinder Tube Dengan Flat Tube

open access: yesInvotek: Jurnal Inovasi Vokasional dan Teknologi, 2019
Mesin mobil pasti menghasilkan panas akibat pembakaran dari bahan bakar. Disatu sisi panas ini menguntungkan jika dikendalikan dengan baik yaitu antara 700C- 900C namun sebaliknya jika panas ini tidak terkendali maka akan menimbulkan masalah.
Nuzul Hidayat   +2 more
doaj   +1 more source

Effect of tube shape on the performance of a fin and tube heat exchanger

open access: yesJournal of Mechanical Engineering and Sciences, 2020
A numerical study is carried out to test the effect of tube shape on heat transfer and fluid flow in a finned tube heat exchanger. The effects of different shapes (circular, flat, elliptical and oval in both orientations: left and right) are analyzed ...
Djamel Sahel   +2 more
doaj   +1 more source

Anti-poisoning performance of flat-tube solid oxide fuel cell in high concentration H2S environment

open access: yesEnergy Reports, 2023
In this work, the anti-poisoning performance of flat-tube solid oxide fuel cells (FT-SOFCs) is investigated in high concentrations of H2S. The degradation rate of the cell is 0.52%/ h, 0.27%/ h and 0.305%/ h at 750 °C, when the concentration of H2S is ...
Yafei Tang   +5 more
doaj   +1 more source

Thermal and Fluid Dynamic Analysis of Compact Fin-and-Tube Heat Exchangers for Automotive Applications

open access: yesMATEC Web of Conferences, 2018
Flat tubes heat exchangers are commonly used in many industrial applications as a consequence of the distinctive geometrical characteristics of the flat tube compared with round tube.
Adam A.Y.   +5 more
doaj   +1 more source

Distribution characteristics of two-phase refrigerant in a return junction connecting parallel narrow channels

open access: yesNihon Kikai Gakkai ronbunshu, 2016
A flat tube heat exchanger has attracted attention as one of the solutions to improve energy efficiency and reduce the amount of refrigerant in the development of the air conditioning unit for global warming prevention.
Hiroki MURAKAMI   +3 more
doaj   +1 more source

Proposing the employment of spring-wire turbulator for flat spiral tubes utilized in solar ponds, experimental study

open access: yesCase Studies in Thermal Engineering, 2022
Flat horizontal spiral-tube is an ideal sort of heat exchangers applicable in solar ponds as it is placed in the hottest zone (bottom of the pond) with the maximum coverage area to transfer the heat into the secondary fluid flow.
Fayez Aldawi
doaj   +1 more source

Numerical Simulation of Flow and Heat Transfer Characteristics of CuO-Water Nanofluids in a Flat Tube

open access: yesFrontiers in Energy Research, 2018
In this paper, water and CuO-water nanofluids are selected as working fluids. The characteristics of fluid flow and heat transfer in a heat transfer tube are analyzed by means of numerical simulation. The effect of nanofluid concentration on the flow and
Luchao She, Guangming Fan
doaj   +1 more source

Numerical Analyses of the Influences of Connector Structures on the Performance of Flat-Tube SOFC

open access: yesApplied Sciences
This study investigates how three flat-tube connector structures—conventional, ribbed flat-tube, and flange-connected—affect solid oxide fuel cell (SOFC) performance.
Jian Yao, Xueyan Guo
doaj   +1 more source

Fabrication of tube-embedded cooling channel through press-fit and directed energy deposition

open access: yesJournal of Materials Research and Technology
Thermoplastic polymeric products are widely used in everyday life; the quality of their molded parts is substantially affected by the cooling characteristics of the mold. This study proposes fabricating a cooling channel through tube embedding inside the
Hyun-Tae Park   +3 more
doaj   +1 more source

Prediction and Optimization of Wear Depth on Rectangular Tube Surface in Roll Forming

open access: yesMetals, 2022
The outer surface of the tube is worn under the interaction between the velocity difference and rolling pressure, in the process of rolling the circular tube into a rectangular tube. In order to predict the wear depth, according to the characteristics of
Menglong Xing   +5 more
doaj   +1 more source

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