Ocean Thermal Energy Conversion

OTEC stands for Ocean Thermal Energy Conversion. It use a temperature difference (20 -°C) between the upper layer of ocean surface and bottom layer of ocean surface is required to run the turbine to generate an electricity. Ocean covered 70% of earth's surface which is abundant form of solar collector and solar storage capacity. Ocean has an abundant form of renewable source of energy which has a potential to fulfill billions of watts of electricity.

Now a days, OTEC is required to generate electricity due to sky rocketing price of oil, natural gas and coal. The objective was how to minimize the cost of Ocean Thermal Energy Conversion Plant.

By Abhishek Kishore | Ameen Uddin Ahmad"Ocean Thermal Energy Conversion" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2314.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/2314/ocean-thermal-energy-conversion/abhishek-kishore

Open Access Journal, Engineering Journal

Influence of Penstock Outlet Diameter and Flat Blade Lateral Twist Angle on the Performance of A Simplified Pico Hydropower System

A study to investigate the influence of penstock outlet and the flat blade lateral twist angle on the performance of an existing Pico-hydro system was undertaken. Five penstock reduced from76.2 mm to 15, 17.5, 20, 22.5 and 25 mm diameters at the outlet and a runner with adjustable flat blades were fabricated from mild steel sheet. For each of the penstock outlets, five blade twist angles of 50, 55, 60, 75 and 90-° were tested and the turbine and alternator speed measured with tachometer. The initial and final levels of water in the overhead tank as well as the periods of tests were also measured. The data collected was used to compute the flow rate and power for each set.

A maximum computed power of 5600 W was obtained with the 25 mm penstock outlet in conjunction with the blade twist angle of 75o. Also, the maximum speed 1180 rpm of the alternator shaft was obtained for a penstock outlet diameter of about 20.25 mm at the same twist angle of 75o. These results imply that for the system potentially could generate appreciable power using flat blades with the penstock outlets and blade twist angles in the ranges > 20 mm and = 600 respectively.

Considering the simplicity of the flat blade configuration, the results indicate good promise for providing relatively cheap, clean and convenient domestic power with further work on the system.

By Daniel T. Ipilakyaa | Alex O. Edeoja | Aondohemen Kulugh"Influence of Penstock Outlet Diameter and Flat Blade Lateral Twist Angle on the Performance of A Simplified Pico Hydropower System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2322.pdf 

Direct URL: http://www.ijtsrd.com/engineering/mechanical-engineering/2322/influence-of-penstock-outlet-diameter-and-flat-blade-lateral-twist-angle-on-the-performance-of-a-simplified-pico-hydropower-system/daniel-t-ipilakyaa

Indexed Journal, Engineering Journal

Compressive Strength of Conventional Concrete Using E Waste

The Waste materials Utilization of construction industry by-products is a sustainable solution to ecological and environmental problems. Use of such waste materials makes their re utilization in cement-concrete, other construction materials, and also the cost of cement and concrete manufacturing is reduces. Other indirect benefits of e-waste include reduction in landfill cost, saving energy and reduction in solid waste.

E-waste consists of discarded refrigerators, TVs radios, Mobile phones, Air conditioners, computers and several other electronic gadgets that have reached end of life their or become a obsolete. . The major aim of the study is to examine the alter in mechanical properties of concrete with the addition of Electronic waste in concrete. It is found that the use of Electronic waste aggregates results in the formation of concrete.

 In this addition Coarse aggregate is replaced by E- waste from 0% to 15% Then in these mix 5%, 10% and 15%. It is that utilization of this Electronic waste in concrete will reduce the requirement for conventional coarse aggregates there by resulting in used by natural resources.

By Anil kumar Sharma | Dr. Bharat Nagar"Compressive Strength of Conventional Concrete Using E Waste" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2308.pdf 

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/2308/compressive-strength-of-conventional-concrete-using-e-waste/anil-kumar-sharma

International Journal, Engineering Journal

High Performance Triplex Adder using CNTFET

Carbon Nanotubes Field Effect Transistors (CNTFETs) is used to implement a two new design of triplex half adder. conventional binary logic has a capable alternate called triplex logic, since it is possible to accomplish uncomplicatedness and energy efficiency in modern digital design due to shortened circuit overhead such as interconnect and chip area. Triplex decoders and binary logic gates are used to present two novel half adders. To obtain power, delay and power delay product the circuits are simulated using HSPICE . Recently reported designs are compared with these circuits.

These triplex adders show delay and power advantage up to 40 and 39 % with less transistor count. So, using these half adders in complex arithmetic circuits will be advantageous.

By G. Naveen Balaji | S. Chenthur Pandian | D. Rajesh"High Performance Triplex Adder using CNTFET" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2300.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/2300/high-performance-triplex-adder-using-cntfet/g-naveen-balaji

UGC Approved Journal, Engineering Journal

Alternative Low Cost Building Materials on Beams

Today, transfer of waste material is an incredible issue and it gets to be hard to discover common assets because of their extreme abuse. Utilization of waste materials as development materials has various advantages, for example, diminishment in cost, saving in energy, and protection of environment. coconut shell is a waste material which can be a substitute for aggregate. Along these lines, the primary goal of this anticipate is to empower the utilization of coconut shell as a development material and to get ready lightweight concrete by utilizing coconut shell as coarse aggregate.

In this anticipate, exploratory study has been done on characteristic strength of M35 concrete with substitution of 15% and 30% of coarse aggregate by coconut shell .Also an attempt has been made to examine the suitability of replacing the 20% of flyash with cement and simultaneously by replacing 15% and 30% of coconut shell as coarse aggregate for concrete of grade M35. The results found were comparable with that of Traditional mix.

By G Khaja | P Sai | K Siva Sankar"Alternative Low Cost Building Materials on Beams" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2295.pdf 

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/2295/alternative-low-cost-building-materials-on-beams/g-khaja

Open Access Journal, Engineering Journal

Solar Power Tree - An Artistic Design

If the 19th century was the age of coal and the 20th century of oil, the 21st will be the age of sun (Solar Energy). The demand of energy is increasing with each period, with the result that the prices increasing day by day. For example, with the supply of oil the quantity of oil is decreasing and the prices are increasing. Similarly in case of coal which is abundantly for the production of electricity is available for few more hundred years. Nuclear energy produces abundant power but many fear that repercussion of catastrophes such as Chernobyl.

So in order to fulfil the increasing demand we must concentrate on utilising the non-conventional sources of energy. Energy from the sun is the best alternative among all the renewable sources. It is free, Inexhaustible, non-polluting, eco-friendly and continuous source of energy. The main drawback of solar panels is the land requirement for the installation of solar panels. But in solar tree we use very less land to produce large amount of electrical power.

By Mohd Nissar | Dr. Aziz Ahmad"Solar Power Tree - An Artistic Design"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2290.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/2290/solar-power-tree---an-artistic-design/mohd-nissar

International Journal, Engineering Journal

Aliasing Frequency Detection In a Communication Receiver

Due to cost pressure, device complexity and size issue, most of the digital communication receiver designers try to avoid very sharp Anti- Aliasing filter. And because of that aliasing frequency e.g. image frequency e.g. ghost cell frequency appear inside the digital baseband, which apparently remained un-noticed to the receiver. As receiver is blind about that signal so, it processes the aliasing signal frequency as a desired cell frequency and if the aliasing signal is strong enough, then the initial mobile receiver's operations like, cell search and camp on etc. will be successfully performed using that aliasing signal.

Later, during the uplink transmission time the receiver will discover that it has wrongly camped to an aliasing frequency, as network will not respond to mobile receiver's message due to mismatch in DL and corresponding UL ARFCN.Here in this paper, a simple, fast and efficient method is proposed to detect the presence of aliasing frequency in the received digital baseband signal.

First the dc power at 0 Hz is estimated using I and Q signal average, then that is compared with the dc power after rotating by p radian (e.g. fs/2 '“ half sampling frequency in case of a twice oversampled received signal). If the estimated dc power before rotation is much higher than the dc power after rotations that will indicate there is no aliasing frequency present in the received digital baseband signal. And in such case, the receiver will process further the received signal, otherwise it will discard or take the appropriate action to combat the aliasing.

By Dr. Om Prakash | Dr. Sajal Kumar Das | Dr. N. Rajesha"Aliasing Frequency Detection In a Communication Receiver " Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2279.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/2279/aliasing-frequency-detection-in-a-communication-receiver--/dr-om-prakash

UGC Approved Journal, Engineering Journal