Results 41 to 50 of about 1,932,556 (210)

R134a flow boiling heat transfer in small diameter tubes [PDF]

open access: yes, 2007
Copyright @ 2007 RT Edwards Inc.Boiling heat transfer in small diameter tubes has been experimentally investigated using R134a as the working fluid. The heat transfer periments were conducted with two stainless steel tubes of internal diameter 4.26 mm ...
Huo, Y, Karayiannis, TG, Tian, S
core  

Impact of COVID-19 pandemic on energy consumption and carbon dioxide emissions in China's transportation sector

open access: yesCase Studies in Thermal Engineering, 2021
The COVID-19 pandemic has put the whole world in a great lockdown and greatly changed our lives. The lockdown caused by the COVID-19 pandemic has greatly affected the transportation industry in China.
Xinxin Zhang, Zhenlei Li, Jingfu Wang
doaj   +1 more source

Liquid-metal heat transfer in a cocurrent- flow, double-pipe heat exchanger is investigated [PDF]

open access: yes, 1969
Analysis of liquid-metal heat transfer in cocurrent-flow, double-pipe heat exchangers shows that heat-transfer coefficients depend upon the operating conditions of the heat exchanger and that use of the customary design equation to predict heat-exchanger
Merriam, R. L.
core   +1 more source

Optimization of channel geometry in a mini-cooling system: A study of triangular, square, and semicircular sections

open access: yesResults in Engineering
This work examines both experimental and numerical methodologies for a cooling system applied to a copper flat plate under steady-state conditions. The primary factors examined are different inlet fluid temperatures, high applied heat rates, and the ...
Samaneh Amini Ahour   +3 more
doaj   +1 more source

An Experimental Study of the Vapor Temperature in the Reaction Zone for Producing Liquid from Camphor Wood in a Non-sweeping Gas Fixed-bed Pyrolysis Reactor

open access: yesInternational Journal of Technology, 2018
The liquids produced by the pyrolysis process with biomass as the raw material are popularly called bio-oil. The reaction zone temperature in the pyrolysis process affects the liquid yield in a non-sweeping gas fixed-bed reactor.
Nasruddin A Abdullah   +4 more
doaj   +1 more source

Heat transfer device [PDF]

open access: yes, 1976
An improved heat transfer device particularly suited for use as an evaporator plate in a diffusion cloud chamber. The device is characterized by a pair of mutually spaced heat transfer plates, each being of a planar configuration, having a pair of ...
Eaton, L. R.
core   +1 more source

Mathematical and Physical Description of Transport Phenomena in Heat Pipes Based on Nanofluids: A Review

open access: yesNanomaterials
Heat pipes are highly efficient heat transfer devices relying on phase-change mechanisms, with performance heavily influenced by working fluids and operational dynamics. This review article comprehensively examines hydrodynamics and heat transfer in heat
Marina S. Astanina   +4 more
doaj   +1 more source

Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis

open access: yesEnergies, 2021
In the geyser boiling mode, the working fluid state is divided into a boiling process and a quiet process, and the sodium-potassium (Na-K) alloy heat pipe can discontinuously transfer heat at each boiling.
Hongzhe Zhang   +3 more
doaj   +1 more source

Influence of metallic porous microlayer on pressure drop and heat transfer of stainless steel plate heat exchanger [PDF]

open access: yes, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014)   +2 more
core  

Investigation of heat transfer properties of granular activated carbon with R723 for adsorption refrigeration and heat pump [PDF]

open access: yes, 2019
This paper investigates the heat transfer coefficient of the wall to packed carbon contact (h) and the thermal conductivity of the packed bed (λ) by using parameters estimation method.
Khaliji Oskouei, Mohammadhasan   +1 more
core   +1 more source

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