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1372 articles for “DRA”
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Design Fabrication and Testing of Hydraulic Oil Cooler by Using Heat Pipe
Abstract: Heat pipe is an essentially passive heat transfer device having high thermal conductivity. In hydraulic power pack use of traditional shell and tube heat exchanger would require lot of space, more power and maintenance cost. So heat pipe device is easily implemented for cooling of hydraulic oil. The heat pipe equipped hydraulic oil cooler uses a heat pipe module comprises of aluminum base block with oil channels machined on it. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 1, 2018 · pp. 10–19 Read article
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Wind Tunnel Experiment on a Flying Bike Model
Abstract: In the upcoming years, a single type of vehicle may be used to achieve various mission objectives. Therefore, the vehicles are manufactured so that they have variable configuration for the required mission profile. Here we are talking about the changes in the overall geometry of the vehicle and therefore we are dealing the aerodynamic characteristics of the vehicle. Since these types of vehicles are exposed to different flight regimes, the …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 26–33 Read article
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Nanomaterials: Sources, Applications and Toxicity
Abstract: Nanotechnology has drawn the interest of many researchers over the years. It has been looked upon as a medium to solve our current problems. In midst of the increasing use and options provided by nanomaterials, we have come to realize that this amazing material also has a possible harmful effect as some of them may be toxic. This mini-review discusses the sources, applications and some of the toxic effects.Keywords: Applications, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 33–35 Read article
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Estimation of Shallow Water Effects Using Empirical and Numerical Methods for Inland Vessels
Abstract: Due to the increased demand for transportation of cargoes through waterways, there is a need for more and efficient inland vessels. The Inland Waterways Authority of India (IWAI) has planned initiatives to augment the inland waterways sector through strategic development, complementing one activity with others to ensure efficient and effective movement of goods within the country for in-bound and out-bound destinations. A key element of this plan will be the …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 2, 2019 · pp. 1–8 Read article
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Effect of Moonpool on Drillship Motions
Abstract: A moonpool is meant for access to the underwater part from the onboard ship. It is a vertical opening along with the depth having an effect on the performance of the floating platform. The water motion inside the moonpool of a drillship is mainly in horizontal sloshing mode and vertical piston mode. This water motion in horizontal or in vertical mode mainly depends on the cross-section of the moonpool, encountering …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 1, 2020 · pp. 1–5 Read article
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Solar Assisted Dehumidification System Using Liquid Desiccant (Design)
Abstract: Approximately one-third of the food produced (about 1.3 billion ton), worth about US $1 trillion, is lost globally during postharvest operations every year. India, being agricultural dominated country, large amount of agricultural products is cultivated each year, but due to lack of proper storage facilities considerable amount of agricultural products like grains, onions, potatoes gets spoiled /rote due to atmospheric moisture. India has incurred post harvest losses to the tune …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 2, 2020 · pp. 22–25 Read article
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Design, Calculation and Cost Estimation of HVAC system for School Building
Abstract: In this project work we are going to design the energy efficient HVAC system for a school building. The use of air conditioning systems for residential/office buildings were very minimum in the earlier days of 1980’s. Due to the technology advancement and industrial growth buildings were started construction in a closed area and construction of apartment also increased after 1980’s with increased population. Also, ambient temperatures are changed drastically due …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 2, 2020 · pp. 38–48 Read article
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A Review: Solar Power Generation
Abstract: Sunlight Produces Solar energy which is a never ending renewable source of energy which is environmentally friendly. Enough sunlight reaches Earth every hour to meet the world's energy demand for an entire year. In today's time production, we need electricity every hour. This solar energy is generated for applications like industrial, commercial, domesticity etc. and residential. It can easily get the energy drawn from direct sunlight. So it is very …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 3, 2022 · pp. 18–24 Read article
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Design of High Speed Slamming Planing Craft
Abstract: This paper chronicles the hypothetical study, test results, design aspects such as stability characteristics, vessel’s high speed performance i.e. short take-off and landing distance, and vertical take-off and landing characteristics, operating at low shallow draft, high speed propulsion efficiency sans cavitation interference, less machinery operating noise, compact hullform & structure, efficient conveyance and applications of High Speed Slamming Planing craft (HSSPC). Amongst High Speed Performance Marine Vessels, this is one …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 2, 2020 · pp. 14–20 Read article
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The Solar Duo: Amplifying Energy Generation with Photovoltaics and Thermal Solar
Abstract: It is now essential to use renewable energy sources to address the problems of climate change and energy sustainability. Photovoltaics (PV) and thermal solar systems have come to be recognised as leading renewable energy technologies. This study examines the "Solar Duo," a PV and thermal solar technology combination that works well together to increase energy production and system efficiency. The document gives an overview of PV and thermal solar systems …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 1, 2023 · pp. 36–40 Read article
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Cooling Considerations for Photovoltaic Modules: A Comprehensive Review
Abstract: Operating temperature has a major impact on photovoltaic (PV) module longevity and efficiency. High temperatures have the potential to impair PV systems' overall energy yield through performance degradation and decreased power output. Therefore, in order to preserve ideal operating conditions and optimize PV module performance, effective cooling strategies are essential. This paper offers a thorough analysis of emerging technologies and various cooling factors for photovoltaic modules, including both passive and …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 3, 2023 · pp. 36–41 Read article
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Spatio—Temporal Changes of Forest Cover in Baramulla District
Abstract: The present study aims to study the forest cover change detection in district Baramulla from 1980 to 2014. Normalized Deference Vegetation Index (NDVI) was used to measure the change detection. The images of two different time periods 1980 (MSS) and 2014 (OLI) have been used to measure the change detection in the study area. Spatial and Radiometric Enhancement has been carried out to improve the image quality. The resulted values …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 3, 2017 · pp. 1–7 Read article
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Slope Stability At The Juncture Of Dredged Berth Pocket & Reclaimed Earth Embankment During Turbulence Caused by Rotation of Ship’s Propeller
Abstract: For accepting vessels with large drafted deepening of the berth pocket at any jetty is necessary by dredging. During berthing of ships, the bed soil particles in berth pocket gets eroded due to critical velocity, due to turbulence of the sea water in the pocket, caused by propeller’s motion and also due to eddies formed during trimming of vessel. Such disturbances in bed soil particles and the energy in the …
Published in Journal of Offshore Structure and Technology · Vol. 10, Issue 1, 2023 · pp. 35–40 Read article
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Land Use/Land Cover Change Dynamic of Bokaro District, East India Using Remote Sensing and GIS Techniques
Abstract: Land, sometimes referred to as dry land, is the solid surface of Earth that is not permanently covered by water. The study describes the land use and land cover (LULC) dynamics in Bokaro district at Jharkhand from 1991 to 2011 using Remote Sensing and Geographical Information System (GIS). Whatever, human activities is invented or generated begins from LAND. Therefore, its uses and disintegration by human throughout the period of time …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 3, 2018 · pp. 16–22 Read article
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Digital Elevation Model (DEM) Extraction using Google Earth and Terrain Zonum Solutions Online Tool
Abstract: Topographic data or DEM are commonly perceived as providing loaded information for various types of modeling. However, this information severely limited and most users rely on published topographic maps or DEM produced by government agencies. This paper proposes an alternative method of generating DEM by using online source of elevation data which is easier and free. Firstly, the location of the study area identified in Google Earth and marked using …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 3, 2018 · pp. 23–29 Read article
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Advancements in De-icing and Anti-icing Technologies used in Aircraft
Abstract: In today’s fast progressing world, there is an advent of technology in all spheres of life. One such area that has grown by leaps and bounds is that of aircraft technology and the systems involved in it. This paper focuses mainly on the technologies/systems used for De-icing and Anti-icing applications in aircrafts (specifically those with fixed wings), be it manned or unmanned (UAVs). Icing and frosting of wings are a …
Published in Journal of Aerospace Engineering & Technology · Vol. 10, Issue 2, 2020 · pp. 23–32 Read article
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Efficient Nanostructure Cathode Material for Low Temperature Solid Oxide Fuel Cells: LaSr0.5Mn0.5Co2-xFexO5+δ
Abstract: While significant progress has been made in anode materials with enhanced tolerance to coking and contaminant poisoning, cathodic polarization still contributes considerably to energy loss, more so at lower operating temperatures. Here we report a synergistic effect of co-doping in a cation-ordered double-perovskite material, LaSr0.5Mn0.5Co2-xFexO5+δ , which has created pore channels that dramatically enhance oxygen ion diffusion and surface oxygen exchange while maintaining excellent compatibility and stability under operating conditions. …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 19, Issue 3, 2017 · pp. 49–55 Read article
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A Review on Advancements and Challenges of Catalytic and Non-Catalytic Waste Water Treatment Processes
Abstract: AbstractClean drinking water is a basic amenity to be ensured for all. As water resources are becoming increasingly scarce due to the rising imbalance between freshwater availability and consumption and many of the water resources are polluted by anthropogenic sources such as industrial, agricultural waste and household, therefore, treatment of wastewater remains a critical need before leaving it to natural water streams. Traditional wastewater treatment processes include filtration, adsorption, activated …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 1, 2019 · pp. 24–36 Read article
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Review: Impact of Nanotechnology in Recent Sports Era
Abstract: Nanotechnology holds ground for many new innovations, technology and its advancement. It can be seen even in the aspects sport which is very important part of our lives and as this technology is thriving day-by-day as a result of which there is drastic improvement in performance of modified sports equipment like in tennis rackets, balls, and in other sports to improve safety, performance, comfortability and to abate the injuries. Nanotechnology …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 20, Issue 2, 2018 · pp. 9–14 Read article
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Mathematical modelling of Thrust profile and Kinematic parameters of Launch abort system
Abstract: The paper discusses a mathematical approach for analysis of thrust and related kinematic parameters produced by abort/escape motors of Launch abort system (LAS) during the initial seconds of abort sequence. The profile is generated applying simple numerical technique to the equations of thrust and motion during this non-linear process. Thrust value peaks during this phase, making it crucial for safety of LAS and the crew in particular. Computations involving data …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 1, 2021 · pp. 33–47 Read article