Experimental and computational simulation of thermal stratification in large pools with immersed condenser

Kumar, Sunil; Vijayan, P.K.; Kannan, Umasankari; Sharma, Mukesh Kumar; Pilkhwal, D. S.

doi:10.1016/j.applthermaleng.2016.10.175

Cited by 33 publications

(12 citation statements)

References 28 publications

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“…Several types of nuclear fission reactor exist [5]. All the nuclear reactors are designed to operate safely and equipped with automatic active and passive shutdown systems [6][7][8][9][10][11]. Specifically, after Fukushima nuclear accident substantial research on assessing and upgrading passive safety systems to deal with Station Black Out (SBO) conditions has been performed [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Renewable Energy for Sustainable Development Goal of Clean and Affordable Energy

Kumar¹,

Rathore²

2023

IJMMST

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Energy demand has grown rapidly with increase of global population. Surge in energy consumption is mainly driven by both economic and technological advancement. The conventional fossil fuels sources (coal, oil, and natural gas) and nuclear energy are depleting in nature known as non-renewables. Burning of fossil fuels contribute significant amount of greenhouse gases emissions, which negatively impact the global ecosystem. Access to energy is essential for modern civilization, yet we must seek alternative energy sources to protect our planet by controlling the emissions. Capturing harmful Green House Gases (GHG) with the help of advanced technologies helps reduce the risk to some extent. However, alternative energy sources must be renewable and sustainable. Renewable energy resources vary by geographical location and include solar, wind, hydro, and bioenergy, among others. The most appealing primary benefits of renewable energy include its low environmental impact, consistent availability even in challenging weather conditions, and its effectiveness in reducing pollution. Additionally, renewable energy contributes to economic growth, fosters job creation, and enhances energy security. However, there are challenges associated with renewable energy storage, which scientists are actively working to address. In addition, public opposition for the installation of renewable energy infrastructure also create difficulties. Increasing public education and awareness regarding the advantages of renewable energy can assist increasing the acceptability, which can further help policymakers in making well-informed decisions. This paper provides a comprehensive overview of diverse renewable energy sources and their current advancements in development. This review further finds that effective government policies aimed at reducing carbon emissions, coupled with improved technology and storage solutions, the adoption of renewable energy will expand significantly in the coming years.

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Section: Introductionmentioning

confidence: 99%

Renewable Energy for Sustainable Development Goal of Clean and Affordable Energy

Kumar¹,

Rathore²

2023

IJMMST

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“…The impact of changing welding parameters (welding current, arc voltage, and welding speed) on mechanical properties including tensile strength, hardness, toughness, and microstructure in SAW have received little attention in the literature, to the author's knowledge. In the pressure vessel industry, SAW welding of this grade of steel is so common that it is essential to comprehend how process variables impact weld quality for sustainable welding [32][33][34][35][36][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Micro-Structural Characterisations of Submerged Arc Welded Steel Plates

Shukla¹,

Singh²

2023

IJMMST

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The goal of the study is to find out how the welding parameters current (I), voltage (V), and speed (S) affect the mechanical characteristics and mechanical characterization of the submerged arc welding (SAW) process. Tensile strength, Microhardness, Impact load was determined using the universal testing machine (UTM), micro Rockwell Hardness machine and Impact load by Charpy and Izod method. With the help of several Submerged Arc Welding (SAW) factors, notably welding voltage (V), welding current (I), and welding speed, this research aims to examine and analyze the mechanical characteristics of welded connections. (S). The investigation involves cutting and machining samples of welded joints, which are then tested for mechanical qualities using tensile, impact toughness, and hardness methods. Analyses were done on how welding parameters affect the mechanical characteristics of welded joints. It has been noted that when heat input increases, the hardness of the weld first increases up to 100 HRC before declining as heat input continues to increase. The ultimate tensile strength and yield strength of the welded joints increases as the heat input increases, but it decline as the heat input increases more. The slower cooling rate has been achieved with high input heat consequent the coarse grains achieved in the weld metal. In contrast the low input heat results in the faster cooling and finer microstructure.

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“…Therefore, studying the characteristics of natural convection (thermal plume) caused by temperature difference at urban building facades under no-wind environment is helpful to improve the thermal environment. In recent years, a lot of researches [1][2][3][4][5][6] have been done on how to improve the thermal-wind environment under no-wind conditions. And, previous scholars mainly studied outdoor thermal-wind environment and proposed optimization methods on the following five aspects: building height, urban ventilation corridor, urban green rate, urban form and urban road layout.…”

Section: Introductionmentioning

confidence: 99%

PIV Measurement and Simulation of Building Thermal Plume under No-wind Conditions

Zhang

Han²,

Tan³

et al. 2022

E3S Web Conf.

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To investigate the buoyancy characteristics of building façades, this study deals with experimental and numerical investigations on building façade flow and temperature field in different façade temperature conditions with different height-aspect ratio of building facade. PIV measurements are conducted in a static wind platform for obtaining the mean velocity, the vertical velocity and the horizontal velocity around the building surface. To simulate the plume characteristics accurately, this study adopt three numerical model and compared the numerical results with the PIV experimental data. The result indicated that the simulation result of the RNG k-ε model best agreement with experimental data. Analysis of numerical results indicated that the wind speed kept increasing in the vertical direction, while the wind speed first increased and then decreased in the horizontal direction. The air temperature tended to be constant in the vertical direction, but air temperature first drooped sharply and tended to be constant in the horizontal direction. As the heat flow density increases, the building facade plume strength increases. When the wall heat flow increases from 100W/m2 to 200 W/m2, the maximum velocity of the wall increases by 1.6 m/s and the temperature increases by 15 °C.

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Experimental and computational simulation of thermal stratification in large pools with immersed condenser

Cited by 33 publications

References 28 publications

Renewable Energy for Sustainable Development Goal of Clean and Affordable Energy

Renewable Energy for Sustainable Development Goal of Clean and Affordable Energy

Mechanical and Micro-Structural Characterisations of Submerged Arc Welded Steel Plates

PIV Measurement and Simulation of Building Thermal Plume under No-wind Conditions

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