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1079 articles for “supply”
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Exploration of Geothermal Energy from Abandoned Oil wells (A Case Study of Eleme, Porthacourt, River State, Nigeria)
Abstract: This project considers the basic technical aspects of power generations from some abandoned oil wells which involve the analysis of the data from the wells. The power capacity of the wells in the first category is determined primarily by the temperature of the produced water and conversion efficiency of the geothermal power plant. The factors that control the wellhead temperature of the produced fluid are: formation temperature, well depth, well …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 8–18 Read article
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Measurements and Analysis of Electric Power Quality
Abstract: The ideal supply voltage is pure sinusoidal voltage with nominal frequency and nominal amplitude.Any variation from this is considered as a power quality event or a disturbance. One importantaspect in the field of power quality is monitoring and control of the qualitative parameters of theelectrical energy according to today’s standards. In that way, a big attention is paid to define thedisturbances and determination of procedures for their measurement. A large …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 2, Issue 1, 2014 · pp. 4–11 Read article
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A Pseudo Randomly Triggered Integer Cycle Control (PRT-ICC) for AC Loads to Reduce THD, EMI and RFI
Abstract: Several proportional voltage control techniques exist for AC loads. The most popular of these are phase control (PC), cycle control (CC) (including integral cycle control (ICC) and fractional cycle control (FCC)) and pulse-width modulation (PWM)). Phase control utilizes triggering for loads away from zero voltage or zero current and generates odd harmonics with amplitudes higher than ICC and PWM. Integral cycle control, causes more harmonics (both even and odd) overall …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 3, Issue 3, 2015 · pp. 22–39 Read article
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Automatic Farming using Soil Moisture Sensor and PIC Microcontroller
Abstract: Water must be properly utilized as it is a very precious resource. Agriculture is one of those areas which consume a lot of water. Irrigation is a time consuming process and must be done on a timely basis. Our objective is to develop an auto-irrigation system which measures the moisture of the soil and automatically turns on or off the water supply system. Once installed this project requires very less …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 4, Issue 3, 2016 · pp. 1–4 Read article
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Numerical Study on Heat Transfer Enhancement of Laminar Flow through a Circular Tube with Artificial Rib Roughness
Abstract: This work presents the configuration optimization of a typical square roughness in a circular tube for laminar heat transfer in air using computational fluid dynamics (CFD) modelling. Conjugate heat transfer 2D numerical model has been developed and successfully carried out. CFD numerical simulations were carried out to analyze the flow and heat transfer in the air duct of a solar air heater provided with rectangular ribs. The laminar flow model …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 1, Issue 3, 2014 · pp. 14–19 Read article
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THEORETICAL ANALYSIS OF ADVANCED PARABOLIC RECEIVER FOR DIRECT STEAM GENERATION
Abstract: Solar thermal power generation using water as a Heat Transfer Fluid (HTF) has gained interest recently, due to its ability to generate steam directly from the receiver tube. In this paper, a new theoretical model of receiver called Concentric Parabolic Trough Receiver (C-PTR) for direct steam generation is presented. The proposed model consists of Phase change material (PCM) sandwiched between two concentric cylindrical tubes. Binary Solar Salt commercially known as …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 1, 2015 Read article
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Solar Humidity Control Unit with Hot Water Generation
Abstract: Abstract Our country lying in tropical region predominantly has high humidity in air in nearly three-fourth span of a year. Maintaining indoor comfort conditions in these conditions become expensive. This paper presents the design of an all-in-one solar-powered humidity control unit which will also provide hot water in the building. The configuration consists of indoor and outdoor units provided with evaporative coolers and desiccant units. The outdoor unit is coupled …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 3, 2015 · pp. 5–10 Read article
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Performance Analysis of Double Coil Wire Inserts for Heat Transfer in a Circular Tube
Abstract: Abstract This work represents the experimental investigation results for turbulent flow heat transfer in a horizontal pipe by using double coil wire inserts and air as working fluid, experiments were carried out for a tube with and without double coil wire inserts at constant heat supply and different mass flow. The double coil wire insert are four different pitch of 12, 14, 16 and 18 mm and three different wire …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 3, 2015 · pp. 25–33 Read article
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A Review on Ejector Based Refrigeration System
Abstract: Abstract Development of industry and increasing living quality, there is a continuous increase in demand of energy which has led to serious environmental issues like global warming, air pollution, production of toxic gases, ozone layer depletion, etc. High oil prize is motivating the researchers to search into renewable energy alternatives. Energy supply to the refrigeration and air conditioning system constitutes a significant role in the world. So, it is very …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 2, 2016 · pp. 8–36 Read article
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Mathematical Study and Steady-State Modeling of Simple Vapour Adsorption Refrigeration System
Abstract: Abstract This paper discusses the mathematical formulation for various heats involved during different processes of a simple vapour adsorption refrigeration cycle having activated carbon and methanol as the active working pairs. This formulation is further used and a detailed analysis of the cycle’s performance is studied based on a steady-state model prepared on the FORTRAN77 platform compiler. The analysis includes effects of the input parameters of the cycle such as …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 3, 2016 · pp. 1–13 Read article
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Spatial Mapping and Analysis of Ground Water Pollution in Pallavaram Municipality
Abstract: The usage of groundwater has gradually increased because of the increase in water demand and the shortage of surface water. Pallavaram is one such sector in Chennai Municipal Corporation using groundwater as the predominant water source. Ground water samples in and around the industries and the dumpsite in Pallavaram were studied to assess the impact of pollution on ground water resources in the particular area. Groundwater samples were collected during …
Published in Journal of Water Pollution & Purification Research · Vol. 1, Issue 1, 2014 · pp. 9–19 Read article
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Analysis on Water Quality of Cauvery and Bhavani River for its Seasonal Variation at Bhavani
Abstract: Abstract Cauvery river is one of the significant sources of water supply for domestic, agricultural and industrial usage in Tamil Nadu. In spite of large scale utilization of the river water, poor water management has resulted in large scale degradation of the quality of water. Hence, a detailed study has been attempted in the Cauvery river, and one of its major tributary Bhavani river between the latitude 11°26′4.51″N to 11°28′39.09″N …
Published in Journal of Water Pollution & Purification Research · Vol. 3, Issue 2, 2016 · pp. 24–29 Read article
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Community Participation in the Mitigation of Geogenic Fluoride Contamination in Drinking Water: A West Bengal Model
Abstract: Abstract The water management issue is by no means an issue only for experts. The close linkages between community initiatives in mitigation approach and grass-root level technology transfer can bring a sea-change in the drinking water management in rural communities. The conventional set up of sectoral water management institutions is hardly capable of coping with the drinking water management in the rural areas. A wiser drinking water management calls for …
Published in Journal of Water Pollution & Purification Research · Vol. 3, Issue 2, 2016 · pp. 37–42 Read article
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Design and Analysis of Two Stage Fully Differential Telescopic Operational Amplifier and Two Stage Fully Differential Folded Cascode Operational Amplifier
Abstract: This paper presents a design methodology of a two stage fully differential telescopic operational amplifier. Similar analysis is carried out for the two stage folded cascode operational amplifier and results are compared at 180 nm technology node. Here effort is made to make the unity gain frequency and the slew rate same of both the respective two stage amplifiers. The purpose of such an effort is to carry out a …
Published in Recent Trends in Electronics Communication Systems · Vol. 2, Issue 2, 2015 · pp. 7–19 Read article
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Hydrodynamic Analysis of Deep Drafted Column Structured (DDCS) Floater for an Offshore Wind Turbine
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Power generation from offshore wind turbines is widely seen as a main source of sustainable energy supply in coming decades. As wind speed increases rapidly with distance from the coast, potential sites for extracting the offshore wind energy for the use of coastal community exist in many places. In shallow water, fixed structures like tripods, jackets, and truss-type towers, monopiles and gravity …
Published in Journal of Offshore Structure and Technology · Vol. 1, Issue 1, 2014 · pp. 1–11 Read article
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Increasing Importance of LNG in Global Gas Trade
Abstract: Abstract Natural gas is fast emerging preferred fuel globally. In 2015, total globally traded liquefied natural gas (LNG) volumes reached 244.8 mt, a 4.7 mt increase over 2014. It marks an all-time high for LNG trade market, surpassing the previous high set in 2011 by 3.3 mt on the back of Fukushima accident in Japan. The changing dynamics is leading to entry of new suppliers and buyers in gas business. …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 1, 2017 · pp. 43–47 Read article
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GPS Based Agricultural Environment Monitoring Server System using Wireless Sensor Networks
Abstract: This paper proposes an agricultural environment monitoring server system for monitoring information concerning an outdoors agricultural production environment utilizing Wireless Sensor Network (WSN) technology. The proposed agricultural environment monitoring server system collects environmental and soil information on the outdoors through WSN-based environmental and soil sensors, collects image information through CCTVs, and collects location information using GPS modules. This collected information is converted into a database through the agricultural environment monitoring …
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 1, 2016 · pp. 25–32 Read article
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Analysis of Operational Transconductance Amplifier using 180 nm Technology CMOS Process
Abstract: Today, it is laborious to design an amplifier with low power utilization, high gain and high bandwidth. ICs industries are growing very fast and it is challenging for day by day growth to provide a better design with all accuracy. It is advisable to design an amplifier with an ideal way. Amplifiers are most essential unit of the analog circuitry; differential amplifier performs very well as input amplifier. Transfer characteristic …
Published in Journal of Microelectronics and Solid State Devices · Vol. 1, Issue 1, 2015 · pp. 10–13 Read article
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Solar Humidity Control Unit with Hot Water Generation
Abstract: Our country lying in tropical region predominantly has high humidity in air in nearly three fourth span of a year. For maintaining indoor comfort conditions in these conditions become expensive. This paper presents the design of all in one solar powered humidity control unit which will also provide hot water in the building. The configuration consists of indoor and outdoor units provided with evaporative coolers and desiccant units. The outdoor …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 8–13 Read article
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Lean Learning Through VSM
Abstract: Prof P Tthareja 12.00 The word “Lean” encompasses more scope than what has been perceived in Industrial Sector. The current paper explores its benefits in the sectors with more complex supply chain than industrial sectors, namely education. Lean thinking allows a simple route for improving efficiencies by, identifying margin of errors, and further by improving teaching effectiveness. In the current paper use of value stream mapping in educational institute is …
Published in Journal of Production Research & Management · Vol. 3, Issue 3, 2013 · pp. 18–29 Read article