Flow Pattern of Two-phase Flow Boiling with Heat Transfer and Pressure Drop Using Natural Refrigerant (Propane) in Microchannel

Pamitran, Agus Sunjarianto; Novianto, Sentot; Mohd‐Ghazali, Normah; Koestoer, Raldi Artono

doi:10.5109/4150474

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Before introducing nano fluid to improve performance of the thermal devices, it is necessary to analyse the geometrical parameters. In geometrical domain some investigation has been done to perform thermal or heat transfer analysis on various exchangers elements and parameters like analysis on diverse absorber plate shape 2,3,4,5) , specifically HVAC duct 6) , Ventilators 7) , flat surfaces 8) and tubes of different shape and size in solar air heater and collectors 2,3,4,5) , effect of perforation, shape and size of tapered hollow conical rings 9) , analysis the effect of helical coil, plain tubes, bundle of tubes with or without roughness in shell-tube type heat exchanger 10,11,12,13) , micro-channel 14,15,16,17) , mini channels 18,19) , analysis of number/location of fins in LED 20) with diverse fluids like air, water and nano fluid, 20,21,22) , nano-lubricant, bio-lubricants, bio-oils 61) , green bio-glycol nano fluid 23,24,25,26,60) , nano-fluidic or refrigerant 27,28) . Some researchers performed work on thermal storage with diverse material characterized as sensible materials under packed bed related to thermal storage like clay, dry clay, nylon 6 etc.…”

Section: Introductionmentioning

confidence: 99%

Comparative Experimental and CFD Analysis of Fluid Flow Attributes in Mini Channel with Hybrid CuO+ZnO+H_2O Nano Fluid and (H_2O) Base Fluid

Kaushik¹,

Uniyal²,

Verma³

et al. 2023

Evergreen

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Comparative study is carried out between nano fluid (nf) CuO+ZnO+H2O and water (H2O) as solitary fluid through experimental and simulation result. The outcome of nano fluid and solo H2O flowing inside rectangular strip mini channel with or without mini insert were admit, for study the conduct of fluid flow and heat-exchange features like Nusselt number (Nu), Friction factor (f), Effectiveness (Ɛ), Coefficient of thermal transfer (h), Heat transfer factor (Q), Nu/Nus, f/fs, thermal-performance factor (TPF), Number of transferring unit (NTU) and Reynolds's number (Re). During composing of nano fluid 0.01% volume fraction, 10-20 nm size nano particles were mixed with 0.5ml CTAB surfactant. Experimentation was managed for different operating parameters under counter flow conditions, where nano fluid is flowing inside mini channel of 2 mm diameter with flow rate 0.0001562 kg/sec (9.37 ml/min) to 0.006255 kg/sec (375.30 ml/min) and hot water is flowing inside the concentric tube of 3cm diameter with flow rate of 0.000782 kg/sec (46.92 ml/min). The operating temperature of nano fluid and hot water were 303K and 323K. As per obtained results, the proposed composition of nanofluid showed better performance than normal water due to better thermal conductivity and extra molecular area gain in nanofluid due to addition of nano particle with base fluid, Thus, it improved the results 18%-21% approximately. Whereas better optimum results were observed in case of rectangular mini channel with mini insert compared with other geometry because of rich turbulency gain and extra exposed area due to mini insert. It affects optimum results in terms of better performance up to 9%-15% compared with simple micro channel without inserts.

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Section: Introductionmentioning

confidence: 99%

Comparative Experimental and CFD Analysis of Fluid Flow Attributes in Mini Channel with Hybrid CuO+ZnO+H_2O Nano Fluid and (H_2O) Base Fluid

Kaushik¹,

Uniyal²,

Verma³

et al. 2023

Evergreen

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“…Technology developments in the current era of ageing world requires careful attention on the environmental impact of the technology 1,2,3) . This involves the effort to reduce greenhouse effects 4) , utilizing wasted heat from the currently available technology 5) , changing the working mechanism and working fluids so that pollution can be reduced 6,7) , and improving system's performances to avoid too many losses to environment 8) . The rapid development of technology creates huge number of challenges for cooling technology as heat needs to be taken out of most of the energy system in order for the system to perform at their best.…”

Section: Introductionmentioning

confidence: 99%

Temperature and Velocity Changes Across Tube Banks in One-directional and Bi-directional Flow Conditions

Hasbullah¹,

Saat²,

Anuar³

et al. 2021

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The back-and-forth movement of flow in oscillatory flow condition that can be found in blood flow, thermoacoustic energy system and ocean wave can be categorized as bi-directional flow condition and heat transfer in this flow condition is not well understood. This paper reports an experimental investigation that compares temperature and velocity values between the onedirectional (the usual flow condition) and the bi-directional flow conditions. The experiment was done using thermoacoustic's standing wave rig with two different drivers to drive the one-directional flow and bi-directional flow conditions in the test rig. Results, that were recorded using piezoresistive pressure sensor, type-K thermocouple and hotwire anemometer, indicate that care should be exercised when calculating heat transfer in bi-directional flow conditions as the temperature and velocity changes are different compared to the one-directional flow condition. Differences were recorded to be within the range of 77% for temperature and 59.5% for velocity, presumably due to the different behavior of forced and natural convection effect as flow conditions changed.

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“…A qualitative flow criterion had been presented in a particular geometry microchannel. Pamitran et al (2020) studied the temperature and heat measurement characteristics in a circular microchannel for a double-phase flow boiling R-290. The surface temperature increased with the test section, and heat transfer from the boiling of two-phase flow nucleate in a microchannel is affected by boiling the core heat transfer nucleates and was slightly affected by convective heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Investigation of Nano-Refrigerant Fluid Characteristics With the Two-Phase Flow in Microchannel

Saleem¹,

Saleem²,

Jumaah³

2021

Frontiers in Heat and Mass Transfer

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This paper presents a simulation and investigation of the heat transfer coefficient, pressure drop, and thermal conductivity of two -phase flow. The simulation was performed of mixtures (Al2O3 nanoparticles with R134a refrigerant). The size of nanoparticles (Al2O3) which is used in this study is 30 nm and volume concentrations are 0.015 and 0.03. The two -phase flowing through a horizontal circular microchannel of (diameter 100 µm, and length 20 mm) under constant heat flux (3000 W/m 2 ) and constant wall temperature (330 K), also in this study used the inlet temperature at -20 o C and mass flow rates are 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8 g/s using in the dissipation of heat from electronic circuits by evaporation. The simulation is achieved by CFD numerical model using FLUENT ANSYS version 15 software. The results indicate the best temperature, pressure drop, density and volume fraction for two-phase flow nanorefrigerant in the microchannel. The higher heat transfer coefficient and pressure drop of two-phase nanorefrigerant flow at a high volume concentration (0.03) of Al2O3 when the mass flow rate is maximum. Finally, compared heat transfer coefficient of this study with the results of Kumar et al. (2013) at variation the mass flow rate, and found the root mean square of error (10%), also compared heat transfer coefficient of this study with results of Hernández et al. ( 2016) at variable volume concentration of nanoparticles Al2O3, and found the root mean square of error (3.7%).

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Flow Pattern of Two-phase Flow Boiling with Heat Transfer and Pressure Drop Using Natural Refrigerant (Propane) in Microchannel

Cited by 6 publications

References 18 publications

Comparative Experimental and CFD Analysis of Fluid Flow Attributes in Mini Channel with Hybrid CuO+ZnO+H_2O Nano Fluid and (H_2O) Base Fluid

Comparative Experimental and CFD Analysis of Fluid Flow Attributes in Mini Channel with Hybrid CuO+ZnO+H_2O Nano Fluid and (H_2O) Base Fluid

Temperature and Velocity Changes Across Tube Banks in One-directional and Bi-directional Flow Conditions

Simulation and Investigation of Nano-Refrigerant Fluid Characteristics With the Two-Phase Flow in Microchannel

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