منابع علمی دنیای انرژی

Leak Detection and Repair A Best Practices Guide

In general, EPA has found signifi cant widespread noncompliance with Leak Detection and Repair (LDAR) regulations and more specifi cally, noncompliance with Method 21 requirements. In 1999, EPA estimated that, as a result of this noncompliance, an additional 40,000 tons of VOCs are emitted annually from valves at petroleum refi neries alone

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سيستم پايش سوخت و محاسبه راندمان نيروگاه بصورت آنلاين (Online)

در حال حاضر با توجه به اينكه گاز ورودي نيروگاههاي كشور از مناطق و منابع مختلف تأمين مي گردد، اين گاز در نقاط مختلف و همچنين در روزهاي مختلف سال از تركيبات و همچنين ارزش حرارتي متفاوتي برخوردار مي باشد. از طرفي  ....

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بررسي نتايج حاصل از مميزي انرژي در بخش برق 30 كارخانه آجر ماشيني كشور

صنعت آجر از صنايع انرژي بر كشور محسوب مي‍شود كه از بزرگترين و پر شمارترين واحدهاي صنعتي مي‍باشد. هرچند مصرف انرژي الكتريكي در اين واحدها به اندازه مصرف انرژي فسيلي قابل توجه نيست، ولي با توجه به مميزي‍هاي ............

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لوله هاي خورشيدي (SUN PIPE) در مدارس

ازآنجائيكه استفاده از نور طبيعي خورشيد در صنعت ساختمان‌سازي جزو فاكتورهاي اصلي است و لذا شركت مونودرافت (Monodraught) انگليس لوله‌هاي آلومينيمي آينه‌اي را طراحي و به توليد انبوه رسانده كه اين لوله‌ها بدون آنكه حرارت ناشي از خورشيد را از آسمان و يا از سقف به داخل منتقل كند، نور خورشيد را به داخل ساختمان هدايت مي‌نمايد.

 

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سيستم روشنايي و تهويه طبيعي (Natural Lighting and Ventilation in a Single Installation)

سيستمي كه در اين مقاله معرفي و بررسي مي‌شود، از انرژي خورشيدي جهت روشنايي و از باد جهت تهويه ساختمان بهره‌ مي‌گيرد. اساساً اين سيستم به 3 روش به كار مي‌رود: 
1-    استفاده جهت روشنايي در روز1
2-    استفاده جهت تهويه  طبيعي2
3-    استفاده توأم (روشنايي و تهويه)

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استفاده از انرژي خورشيدي و ساير انرژي‌هاي تجديدپذير در ساختمان

با توجه به بحران زيست محيطي كه حيات بر روي كره زمين را تهديد مي‌كند و نيز افزايش چشمگير مصرف انرژي كه باعث تشديد اين بحران شده است، لزوم رويكرد به منابع انرژي پاك و تميز بايد با شدت بيشتري مورد توجه قرار گيرد. از اين رو انرژي خورشيد، اين منبع لايزال الهي كه كشور ما به دليل شرايط خاص جغرافيايي و اقليمي، بطور نامحدود از اين موهبت برخوردار است، به عنوان بهترين و اميدبخش‌ترين منبع انرژي شناخته شده است. در اين مقاله سعي شده تا راهكارهاي مناسب جهت صرفه‌جويي در مصرف انرژي و نيز استفاده از انرژي خورشيد در ساختمان معرفي شوند

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معرفي مولد هاي بخار راندمان بالاي شركت كلايتون

بويلر و يا مولد بخار کلايتون با قدرت بالا کم حجم ترين، پربازده ترين، بهترين و امن ترين تجهيز براي توليد بخار با کيفيت بالا در دنياست. مولد بخار Clayton با کارايي بالا، راه اندازي سريع، توليد بخار با کيفيت بالا و پاسخگويي سريع به تغييرات تقاضاي بخار، blow down كم، کيفيت بسيار بالا  از جمله مزاياي اين بويلر مي باشد.

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Fundamentals.softarchive.net

Over the past quarter century, the importance of heat exchangers has increased immensely from the viewpoint of energy conservation, conversion, recovery, and successful implementation of new energy sources. Its importance is also increasing from the standpoint of environmental concerns such as thermal pollution, air pollution, water pollution, and waste disposal. Heat exchangers are used in the process, power, transportation, air-conditioning and refrigeration, cryogenic, heat recovery, alternate fuels, and
manufacturing industries, as well as being key components of many industrial products available in the marketplace. From an educational point of view, heat exchangers illustrate in one way or another most of the fundamental principles of the thermal sciences, thus serving as an excellent vehicle for review and application, meeting the guidelines for university studies in the United States and oversees.

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Combustion

The parameters essential for the evaluation of combustion systems are the equilibrium product temperature and composition. If all the heat evolved in the reaction is employed solely to raise the product temperature, this temperature is called the adiabatic flame temperature. Because of the importance of the temperature and gas composition in combustion considerations, it is appropriate to review those aspects of the field of chemical thermodynamics that deal with these subjects.

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Boilers

The structure of the book is quite simple. Words are all explained alphabetically. At the same time, all words related to any particular topic are grouped together so that the entire subject matter stays intact at one place. The reader is suitably directed. This way, the reader gets the explanation for the word he is searching for and also sees all the related words and their explanations, getting to learn about the whole topic if so interested. In addition, repetition of description is avoided as the full topic is elaborated at one place and not fragmented.

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APPLIED COMBUSTION

Today’s world requires that undergraduate engineering education produce graduates having a broad foundation in technical as well as scientific principles of energy conservation and conversion. In addition, engineers and scientists are now needed who can utilize concepts of physics and chemistry to design, develop, operate, and/or maintain current or future energy-consuming machinery. Many texts and references have been written in specific areas of energy, such as thermodynamics, internal combustion engines, gas turbines, chemical kinetics, and flame theory. Other recent publications have attempted to address, in a single volume, the entire field of current energy conversion engineering, covering topics such as solar, nuclear, geothermal, and wind energy systems. Applied Combustion provides its readers with a broad engineering introduction to principles of chemical energy conversion, or combustion, as well as practical applications of those laws to a variety of chemical heat engines.

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Power_Plant_Engineering

This book being pilot project of the authors specially in the area of conventional power plant will
satisfy the engineering scholars as well as researchers in the field of direct energy conversion devices.
In the present book the syllabi enclosed has been covered in the most lucid manner from
power plant point of view to avoid the unnecessary bulkiness and to reduce the cost of the price for
the benefit of our beloved students of engineering in particular and others in general.

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rosaler_standard_handbook_of_plant_engineering

The degree of success of a plant engineer will be measured not by his or her ability to recite equations, balance budgets, complete capital projects, or maintain equipment, but by the ability to lead others in the face of insufficient personnel, resources, and time to do the job comfortably. In years past, internal workloads determined our pace of progress. Today, external information and customer demands drive behavior and pace. In order to successfully manage information and lead people, plant engineers must:
● Be a part of the management team
● Know the workforce culture
● Understand and implement strategic planning
● Thrive, not survive
How one goes about addressing and prioritizing these concepts will determine the success or
failure of the organization.

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Generating Power at High Efficiency

This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission, and sources are indicated. Reasonable efforts have been made to publish reliable data and information, but the author and the publishers cannot assume responsibility for the validity of all materials. Neither the author nor the publishers, nor anyone else associated with this publication, shall be liable for any loss, damage or liability directly or indirectly caused or alleged to be caused by this book. Neither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming and recording, or by any information storage or retrieval system, without permission in writing from Woodhead Publishing Limited.

 

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STEAM PLANT OPERATION

In today’s modern world, all societies are involved to various degrees with technological breakthroughs that are attempting to make our lives more productive and more comfortable. These technologies include sophisticated electronic devices, the most prominent of which are computer systems. Many of the systems in our modern world depend on a reliable and relatively inexpensive energy source—electricity.

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Steam Plant Calculations Manual, 2E, Revised and Expanded V. Ganapathy

.

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Thermal Engineering in Power Systems

This book focuses on thermal engineering topics for power systems. The topic ranges over all power systems that include fossil power plants, associated environmental cleaning methods, safety of nuclear power plants, development of virtual engineering design environments, cooling technologies and associated problems related to high-temperature gas turbine blades, highly efficient compressors, steam turbines, and hybrid cars. The objective is to present the current state-of-the-art technologies in various power systems such as power plants, aerojet engines, utilities, thermal management, and safety issues in nuclear power plants.

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Boiler Operator’s Handbook

This book is written for the boiler operator, an operating engineer or stationary engineer by title, who has knowledge and experience with operating boilers but would like to know more and be able to operate his plant wisely. It is also simple enough to help a beginning operator learn the tricks of the trade by reading the book instead of learning the old-fashioned way (through experience) some of which can be very disagreeable. The book can also be used by the manager or superintendent who wants a reference to understand what his operators are talking about. It’s only fair, however, to warn a reader of this book that it assumes a certain amount of experience and knowledge already exists.

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شبيه سازي عددي بويلر بازياب ليكور سوز كارخانه توليد كاغذ با هدف تنظيم مناسب پارامترهاي عملكردي

لیکور سیاه یکی از محصولات جانبی تولید خمیر کاغذ می باشد که در اثر ترکیب چیپسهاي چوب با مواد شیمایی (هیدروکسید سدیم و سولفیت سدیم ) در یک شرایط دما و فشار ي مشخص در یک برج پخت بنام دایجستر، تولید می گردد .غلظت ذرات جامد موجود در لیکور سیاه تولیده شده بعد از فرآیند اوا پراسیون تا حدود 68 درصد افزایش می یابد که دراین حالت می توان از آن بعنوان سوخت در بویلر بازیاب موجود درکارخانه هاي تولید کاغذ به روش شیمایی کرافت مورد استفاده قرار داد. 

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بهبود عملكرد بازياب ليكور سوز- اگزرژي كارخانه توليد كاغذ به روش آناليز انرژي

كارخانه هاي چوب و كاغذ كشور در جريان فرآيند توليد خمير كاغذ از چوب درختان به روشهاي شيمايي ، ماده اي توليد مي نمايند كه ليكور سياه ناميده مي شود كه به منظور بازيابي مواد شيمايي موجود در آن و به دليل دارا بودن بودن ارزش حرارتي مناسب، از يك بويلر بازياب به منظور توليد بخار مورد نياز فرآيندي و بازيابي مواد شيميايي استفاده مي نمايند..

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