VOLUME 1 ISSUE 7

VOLUME 1 ISSUE 7

IJATSER Volume 1 – Issue 7, June 2016 Edition

All listed papers are published after full consent of respective author or co-author(s).
For any discussion on research subject or research matter, the reader should directly contact to undersigned authors.

01-June16  A NOVEL SYSTEM OPTIMIZATION OF A GRID INDEPENDENT HYBRID RENEWABLE ENERGY SYSTEM FOR TELECOM BASE STATION

Abstract: Nowadays, utility has begun to take into account the green power technology for having a healthier environment. The green powertechnologies reduce combustion of fossil fuels and also the resultant co2 emission that is that the principle reason behind global warming. By maximizing the utilization of the renewable energy, the usage of diesel generator for powering the base transceiver stations may be reduced or removed. This paper aims to investigate the economic, technical and environmental performance of hybrid power systems for powering remote telecom base station. Simulations using Hybrid optimization Model for electric Renewable (HOMER) software are performed to determine the Initial Capital, the overall net present cost (TNPC), the cost of Energy (COE) further because the system capacity shortage of the various supply options. The simulation results recommend an appropriate hybrid system which might be the feasible solution for generation of electric power for remote telecom base station. A close analysis, description and modelling of the system also are presented in this paper.

Keyword: Wind turbine, solar photovoltaic cell, HOMER, hybrid system

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02-June16 A Study of Software Size Estimation Techniques

ABSTRACT: To create good software we require correct estimation of various software quality dependent factors like software size, software effort and software cost. The size of software is one of the vital elements of a software project. The estimation of software size is one of the vital factors for a good software establishment because
software size estimation plays most vital role as a input for software cost estimation and software effort estimation. So we can say that if software size estimation is done properly then estimation of software effort and software cost is also done correctly. The scope of these estimates is very wide and utilized in various applications like planning, scheduling, budgeting, staffing, etc. Here, in this research paper we present a study / survey of different methods utilized for software size estimation.
KEYWORDS: Software Estimation, Software Size, Code Based Sizing, Function Point, Functional Size Measurements,
Software Effort, Software Cost, COCOMO.

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03-June16  FAILURE IN WATER TUBE BOILER

ABSTRACT : Boiler tube failure is the prime reason of forced Outages at coal fired thermal power plants. With ever increasing demand for electricity, it is very necessary for the power plants to generate electricity without forced outages. This paper illustrates cause & effect analysis of boiler tube failures. The data pertaining to boiler tube failures for one of Thermal Power Plant in Maharashtra State of last ten years is referred. Out of total 144 failures, 43 failures are observed in Economiser zone. Economizer is the main part of the boiler in the furnace second pass. It is the medium for transportation of the feed water to boiler drum. It helps to increase the boiler efficiency. Economizer is placed in the flue gas path, to absorb the heat from the flue gas and increase the temperature of the feed water. Factors contributing for Economizer tube failure includes stress rupture, fatigue, erosion, water side corrosion, fire side corrosion and lack of material quality. Out of these factors Erosion is the prime factor contributing for tube failure as referred from literature review. Erosion is a process in which material is removed from the surface layers of an object impacted by a stream of abrasive particles. Factor influencing the Erosion is the velocity of flue gas, the temperature of flue gas, the mineral content in coal, the arrangement of pressure parts and deviation from design condition. Amongst these factors velocity of flue gas ash particle has the predominant effect on erosion of economizer tubes. Boiler tube failures results in loss of 465 Million Of Units (MU’s) in power generation. Moreover the severe service condition in coal fired thermal power plants causes failures such as the effects of high temperature, erosion, stress, vibration and corrosion combined resulting in failure of the boiler tubes thus it is extremely important to determine and correct the root cause to get your boiler back on line and reduce or eliminate future forced outages.

Keywords: Boiler tube failure, forced outage, flue gas ash erosion, root causes.

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04-June16  PERFORMANCE ANALYSIS OF SHELL AND TUBE HEAT EXCHANGER

ABSTRACT : A heat exchanger is a device, which transfer internal thermal energy between two or more fluids at different temperature. Without this essential piece of equipment most industrial process would be impossible. Heat exchangers are widely used in refrigeration air conditioning, and chemical plants. They can be employed in various
uses, for instance, to effectively transmit heat from one fluid to the other. Shell-and-tube heat exchangers (STHXs) are widely applied in various industrial fields such as petroleum refining, power generation and chemical process, etc. Tremendous efforts have been made to improve the performances on the tube side.
In this project experimental performance is done on the fixed designed STHX and calculate the heat transfer coefficient and effectiveness. Validation is to be carried out using which gives the result comparison with that of experimental result.
Here flow parameters are not varied but size and number of tubes are varied and best efficient model is selected as Optimized value. 3 different number of tubes are used with same shell size remaining same. 40 tubes , 32 tubes and 36 tubes were tried . It’s been observed for same input temperatures and mass flow rates for three different models one with 36 tubes , 32 tubes model &other with 40 tubes, the temperature variation in 36 tubes is more and also requires less tubes compared to 40 tube model. so it is more effective than tubes model.

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05-June16  EXPERIMENTAL ANALYSIS OF CEMENT CONCRETE PREPARED WITH IRON SLAG

ABSTRACT : In the present construction scenario the replacement of natural resources in the production of cement and sand is the current issue. As the environmental awareness is growing now a day, the world is progressively more turning to researching properties of industrial waste and finding solutions on it. Iron Slag is industrial by-product material produced from the process of manufacturing iron and its product. Iron and steel slag is considered waste and is categorized in industrial waste catalogues in most countries in the world, it is most definitely not waste, neither by its physical and chemical properties nor according to data on its use as valuable material for different purposes. Considering the specificity of physical and chemical properties of metallurgical slags, this research work demonstrates the possibilities of using iron slag as partial replacement of sand in concrete. In the present study an attempt has been made to prepare the concrete mix of grade M20 by mixing iron slag with various percentages in replacement with sand and studying the mechanical behavior of this concrete mix. Experimental study is conducted to evaluate the workability and strength characteristics of concrete, properties of concrete have been assessed by partially replacing sand with iron slag. The sand has been replaced by slag accordingly in the range of 0% (as a control mix) 10%, 20%, 30% , 40%, 50% and 60% by weight of sand for M20 mix. Concrete mixtures were produced, tested and compared in terms of compressive and split tensile strength with the conventional concrete. The results show that the strength properties of concrete increase significantly when sand is partially replaced by iron slag.

Keywords: Concrete, Environment, Waste, Iron Slag, Mechanical Properties, Strength.

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06-June16 DEVELOPMENT OF MECHANICAL PROPERTIES OF CONCRETE USING STYRENE BUTADIENE RUBBER LATEX POLYMER

ABSTRACT : Concrete is being widely used for the construction of most of the buildings, bridges throughout the world; hence, it has been properly labeled as the backbone to the infrastructure development of a nation. The entire construction industry is in search of a suitable, effective and durable method of production of concrete that would ultimately improve the construction quality. On the other hand cement production is consuming significant amount of natural resources. That has brought pressures to reduce cement consumption by the use of supplementary materials. Polymers are introduced into concrete in an effort to improve its performance and durability. It has been observed that polymermodified concrete (PMC) is more durable than conventional concrete due to higher strength and durability. The purpose of this research is based on the investigation of the use of styrene butadiene rubber latex polymer in structural concrete to enhance the mechanical properties of concrete. This investigation was carried out using several tests such as compressive strength test, split tensile strength test and flexural test. The aim of the
work is to study the suitability of Styrene Butadiene Rubber Latex as a partial replacement of cement. The mixes were prepared with polymer-cement ratio of 5%, 10%, 15% and 20% and the mix design was done based on I.S method. Slump test was conducted on fresh concrete while compressive strength, Split tensile strength test and flexural strength test were conducted on hardened concrete. On the basis of findings it can be concluded that
SBR latex improves the internal structure of the latex modified concrete.

Keywords: Polymer Concrete, Durability, workability, Engineering Properties, Strength, SBR Latex.

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07-June16  A New Technique for Function Point Analysis

ABSTRACT: Software size estimation is most vital input for software cost and software effort estimation. As the size and complexity of software is increases the software expansion has turn into a more rowdy procedure and for this reason it desires to take concern of even the effortless movement in the expansion procedure. Therefore improving the correctness of software size estimation finally results in improving the accurateness of the software effort and software cost estimates. These estimates are utilized in budgeting, scheduling, staffing, planning etc. Although when we compute these estimates, only high level software project needs are available to us. Utilizing this high level knowledge/information to create exact software size estimates is a really challenging job. There are several methods are proposed in past for software size estimation, but from these methods function point analysis is very popular. In this paper we suggest a new method for function point analysis with two new general system properties and we also modernize the function point analysis for reengineering projects.

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