Desuperheater Temperature Control System Using Distributed Control System (DCS)

The Control System for Desuperheater Temperature of Boiled water is a critical task in industry. In this Paper reviews the study and collection of measurement datas from in TNPL ( Tamil Nadu Newsprint and Papers Limited) Power Plant , there are three sections namely Deaerator tank, Boiler and Turbine. I have done this work in the turbine section. The steam f rom the Boiler is at very High Temperature. The temperature of this high temperature steam is lowered by spraying the oxygen dissolved water using Desuperheater. The spraying water is controlled by Distributed Control System ( DCS ). The Input to the turbine is at High Temperature and High Pressure steam. The output of the turbine is mentioned in Mega Watts. When the superheated steam is given to the turbine then the Temperature and Pressure output steam condition is Low. The Low level steam is fed to the Desuperheater depends upon requirements in the various units. It is supplied to each section in TNPL

ADVANCED EMBEDDED SYSTEM ASSISTED GSM AND RFID BASED SMART SCHOOL MANAGEMENT SYSTEM

ABSTRACT: Among the various technological devices and systems, global system for mobile communication (GSM) is believed as an efficient and fast enough technique that can perform efficient, real time object identification and fast reporting. GSM based tracking system will pass complete information about, where the object (student) and its activities. The RFID system is utilized as a board module to attach the parts of the object (bag, identity card, tag, etc) and follow the object then and there. The designed model is studied under laboratory scale and the results are analysed. Keywords: GSM, RFID, PIC Microcontroller, Security, GSM modem. I.INTRODUCTION The risk of insecure is increasing with increasing populations, as the consequence, large magnitude of hijacks is reported. The major risk faced by the school management as well as the parental side is that the identification of the location of the pupils and their safety measures. The statistical reports perceive that most of the students are hijacked, when they are crossing the school boundary or school entrance area Advanced embedded system assisted GSM and RFID based smart school management system is used to give an access for the operation by habitual recognition of the person based upon the RFID tag information. As an example, for entrance control of an organization, the RFID tag and its reader are designed with predefined unique code of tag for individual school student. Whenever the tag is read by reader, it compares the code with the predefined codes in the machine. On the basis of correctness of the information, it sends an acknowledgement (in the form of text message) to the parents of that particular student and the same protocol is followed for all the pupils of the school. Another important feature of the system is that it maintains a record of attendance about the pupil (i.e.) "in time" "out time" which can be further transferred to the administrator via network systems. Through which we can easily compute the attendance status of the students within no time. This machine can also help to avoid human involvement in keeping the attendance record. Thus, reduction of the manpower held in the organization. This machine ensures accurate access control and record keeping. II. DESIGN AND CONSTRUCTION DETAILS A. RFID: Many types of RFID exist, but at the highest-level, we can classify RFID devices into two classes namely, active and passive tags. Active tags require power source either connected to powered infrastructure or use energy stored in an integrated battery. In the laterals, tag's lifetime is limited by stored energy, balanced against the number of read operations. As an example, an active tag is the transponder attached to an aircraft that identify the national origin. The numbers insisted in the tags represent the identification number of the candidate. The RFID utilized in the current system is given below

Dielectric relaxation dynamics of high-temperature piezoelectric polyimide copolymers

Polyimide co-polymers have been prepared based on different diamines as co-monomers: a diamine without CN groups and a novel synthesized diamine with two CN groups prepared by polycondensation reaction followed by thermal cyclodehydration. Dielectric spectroscopy measurements were performed and the dielectric complex function, ac conductivity and electric modulus of the co-polymers were investigated as a function of CN group content in the frequency range from 0.1 Hz to 107 Hz at temperatures from 25 to 260 °C. For all samples and temperatures above 150ºC, the dielectric constant increases with increasing temperature due to increaseing conductivity. The α-relaxation is just detected for the sample without CN groups, being this relaxation overlapped by the electrical conductivity contributions in the remaining samples. For the copolymer samples and the polymer with CN groups an important Maxwell-Wagner-Sillars contribution is detected. The mechanisms responsible for the dielectric relaxation, conduction process and electric modulus response have been discussed as a function of the CN groups content present in the samples.This work was supported by FEDER through the COMPETE Program and by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Project PESTC/FIS/UI607/2011 and grants SFRH/BD/ 62507/2009 (A.C.L.) SFRH/BD/68499/2010 (C.M.C.). The authors also thank funding from “Matepro – Optimizing Materials and Processes”, ref. NORTE-07-0124-FEDER-000037”, co-funded by the “Programa Operacional Regional do Norte” (ON.2 – O Novo Norte), under the “Quadro de Referência Estratégico Nacional” (QREN), through the “Fundo Europeu de Desenvolvimento Regional” (FEDER). RSS acknowledge the support of the Spanish Ministry of Economy and Competitiveness through the project MAT2012-38359-C03-01 (including the FEDER financial support). Authors also thank the Basque Country Government for financial support (ACTIMAT project, ETORTEK Program, IE13-380, and Ayudas para Grupos de Investigación del Sistema Universitario Vasco Program, IT718-13)

Embedded vision: an introduction

Embedded vision is the integration of "computer vision" intomachines that use algorithms to decode meaning from observed images or video.It has a wide range of applications to machine learning, artificialintelligence, industrial, medical, driverless cars, drones, smart phones,aerospace, defense, agriculture, consumer, surveillance, robotics and security.This book is an introductory guide for anyone who is interested in designing machinesthat have vision-enabled, embedded products. It covers a large number of topicsencountered in hardware architecture, software algorithms, applications,advancements in camera, processors, and sensors in the field of embeddedvision. Features: Includes a wide range of applications to artificialintelligence, machine learning,  industry,science, medicine, transportation, civil infrastructure, and security Covers a large number of topics encountered in hardwarearchitecture, software algorithms, applications, advancements in processors andsensors

A STUDY OF SCAVENGING AND MAINTENANCE OF AIR COOLED OIL GUN (PARALLEL TYPE -EXTERNAL MIXING) FOR THERMAL POWER PLANT

ABSTRACT: Air cooled oil gun (parallel type -External mixing) is most widely used oil gun in Indian thermal power plant because it is very simple, easy to operate, maintain, replacement ( damaged part ) and also it is cheaper than auto retract type oil gun. The main aim of this paper is to give clear idea for oil gun general arrangement, operation and maintenance. Generally in thermal power stations oil gun is not properly maintained because they might not know the proper maintenance. They do only regular maintenance which was intimated by the oil gun supplier. But the supplier does not know the working (boiler) conditions of power plant. I hereby given some suggestion for operation, handling and maintenance of oil gun, by this we can reduce frequent cleaning of oil gun and workers work load

VIBRATIONAL STUDIES OF Na 2 SO 4, K 2 SO 4, NaHSO 4 AND KHSO 4 CRYSTALS

ABSTRACT Sodium sulphate, Potassium sulphate, Sodium hydrogen sulphate and Potassium hydrogen sulphate crystals were grown by aqueous solution method. FTIR and Laser Raman spectra were measured for the crystals. Sulphate group is identified by the frequency assignments