Results 41 to 50 of about 3,522 (209)

An image analysis method for determining boiling front in minichannel heat exchanger [PDF]

open access: yesE3S Web of Conferences, 2021
In this work a numerical method for determining boiling front in short time period of flow was presented. A non-stationary boiling in rectangular eleven minichannels (0.25 mm x 0.25 mm x 32 mm) was recorded using Phantom v1610 high speed camera with the ...
Rafałko Gabriela   +3 more
doaj   +1 more source

Digital Flow Rate Measurement System Design for Minichannel based on Cross Correlation Technique [PDF]

open access: yesEngineering and Technology Journal, 2017
In this paper, a demonstration for an experimental study to measure mean fluid velocity in minichannels is presented. Fluid flow velocity was estimated by applying cross correlation technique on measured thermal fluctuation using two ultra-small ...
H.A. Dhahad, E.M. Alfayydh, K.H. Fahem
doaj   +1 more source

Pool boiling of ethanol on surfaces with parallel microchannels [PDF]

open access: yesEPJ Web of Conferences, 2022
The paper presents investigations into pool boiling heat transfer for open minichannel surfaces. The experiments were carried out with saturated ethanol at atmospheric pressure.
Kaniowski Robert, Pastuszko Robert
doaj   +1 more source

Determination of bubble diameters during pool boiling on surfaces with minichannels partially filled with porous elements [PDF]

open access: yesEPJ Web of Conferences
This article presents experimental studies conducted on enhanced surfaces in the form of minichannels partially filled with porous structures. The experiments were carried out during pool boiling of water for five different surfaces.
Dadas Norbert   +2 more
doaj   +1 more source

Experimental research of hydrodynamic characteristics during boiling of refrigerants in minichannels using true parameters of phases [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2019
This paper is devoted to the development of an integrated method for calculating heat hydrodynamic characteristics of two-phase flows taking into account the specificity of the flow in minichannels. The proposed approach is based on the methodology for
A. A. Malyshev   +3 more
doaj   +1 more source

Study on Flow and Heat Transfer Characteristics in Lamilloy Structure with Different Configurations of Internal Minichannels

open access: yesEnergies, 2023
This paper proposes a novel lamilloy cooling structure equipped with internal minichannels used in a combustor flame cylinder. The overall flow and heat transfer characteristics of three different internal minichannel configurations (parallel-flow ...
Tao Yang   +7 more
doaj   +1 more source

Condensation Flow of Refrigerants Inside Mini and Microchannels: A Review

open access: yesApplied Sciences
Nowadays, the demand for obtaining high heat flux values in small volumes has increased with the development of technology. Condensing flow inside mini- and microchannels has been becoming a promising solution for refrigeration, HVAC, air-conditioning ...
Anıl Başaran, Ali Cemal Benim
doaj   +1 more source

Experimental research on hydrodynamic instabilities during condensation of the pro-ecological refrigerant R1234yf in tubular minichannels

open access: yesE3S Web of Conferences, 2018
The following paper presents the results of preliminary experimental research on the influence of instabilities of a hydrodynamic type on the condensation phase change process in tubular minichannels.
Kuczyński Waldemar, Denis Aleksander
doaj   +1 more source

Influence of design parameters on the global performances of low-speed counter-rotating axial-flow fans [PDF]

open access: yes, 2014
The present work aims at experimentally investigating the effects of some parameters on the performances of a counter-rotating stage, and on the instationary flow between the rotors.
BAKIR, Farid   +2 more
core   +4 more sources

Condensation of Novec 649 refrigerant in pipe minichannels

open access: yesE3S Web of Conferences, 2018
The paper presents the results of experimental investigation of Novec 649 refrigerant condensation in tube minichannels. This is a low-pressure refrigerant.
Bohdal Tadeusz   +2 more
doaj   +1 more source

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