This document discusses different components of fossil-fuel steam generators. It describes boilers, explaining that they are classified in various ways such as by tube content and fuel type. It also defines boiler horsepower. The document then discusses the purpose and advantages of economizers and air preheaters. It provides examples of calculating boiler and economizer efficiency. Finally, it describes superheaters and condensers, explaining superheater types and the purpose of condensers.
Basic Scheme Open Cycle Gas Turbine Plant Aman Gupta
Gas Turbine Power Plant
A gas turbine, also called a combustion turbine, is a type of internal combustion engine.
Types of gas turbine power plant
1 Open cycle gas power plant
2 Closed cycle gas power plant
Gas turbine engines derive their power from burning fuel in a combustion chamber and using the fast flowing combustion gases to drive a turbine in much the same way as the high pressure steam drives a steam turbine.
The gas turbine is the engine at the heart of the power plant that produces electric current. A gas turbine is a combustion engine that can convert natural gas or other liquid fuels to mechanical energy. This energy then drives a generator that produces electrical energy.
In a gas turbine, gas is ignited under pressure and combustible high-pressure, high-temperature gases are produced. The combustible gases power a turbine, which in turn powers a generator. In a boiler power plant, electricity is generated by heating water to produce steam which, via a turbine, powers a generator.
Combined Heat and Power (CHP) generation. The use of industrial power and heat, resulting into high efficiency of the industrial unit and high profits. Reliability on energy provider is reduced.
Basic Scheme Open Cycle Gas Turbine Plant Aman Gupta
Gas Turbine Power Plant
A gas turbine, also called a combustion turbine, is a type of internal combustion engine.
Types of gas turbine power plant
1 Open cycle gas power plant
2 Closed cycle gas power plant
Gas turbine engines derive their power from burning fuel in a combustion chamber and using the fast flowing combustion gases to drive a turbine in much the same way as the high pressure steam drives a steam turbine.
The gas turbine is the engine at the heart of the power plant that produces electric current. A gas turbine is a combustion engine that can convert natural gas or other liquid fuels to mechanical energy. This energy then drives a generator that produces electrical energy.
In a gas turbine, gas is ignited under pressure and combustible high-pressure, high-temperature gases are produced. The combustible gases power a turbine, which in turn powers a generator. In a boiler power plant, electricity is generated by heating water to produce steam which, via a turbine, powers a generator.
Combined Heat and Power (CHP) generation. The use of industrial power and heat, resulting into high efficiency of the industrial unit and high profits. Reliability on energy provider is reduced.
Combined Cycle Gas Turbine Power Plant Part 1Anurak Atthasit
Introduction to Combined Cycle Gas Turbine Power Plant. Describing the advantage and design limit of the CCGT. Overview of Brayton Cycle and Rankine Cycle - showing some basic thermodynamic to explain some background of CCGT.
Combined Cycle Gas Turbine Power Plant Part 1Anurak Atthasit
Introduction to Combined Cycle Gas Turbine Power Plant. Describing the advantage and design limit of the CCGT. Overview of Brayton Cycle and Rankine Cycle - showing some basic thermodynamic to explain some background of CCGT.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
2. • What is a Boiler?
• Difference between steam boiler and steam generator?
• Boilers are classified upto 16 different ways. e.g.
1) Tube Content 2) Type of Fuel 3) Tube shape & position
4) Manufacturer’s trade name 5) Mode of circulation of fluid
Boilers
• Focus on (1): Is fire-tube or water-tube type. Each has its own types.
• Classify the boiler in your steam lab.
• Boiler horse power (BHP): Was originally defined as 10 ft2 of boiler
heating surface. Now, it is heat required to evaporate 34.5 lbm/h of
saturated water to saturated steam at 1 atm. i.e. 33475.35 Btu/h.
Usually rounded off to 1 BHP = 33480 Btu/h.
3. Construction and Flow Diagram
Note: See diagram of
steam power plant in
J.B. Jones book.
Purpose of Economizer and air preheater?
Advantages of a high flue gas exit temperature?
Recall minimum stack temperature.
Feedwater from
feedwater heater
Flue gas to
stack
Induced-draft
fan
Forced-
draft
fan
Air preheater
Air
4. • Feedwater is fed from the economizer, saturated steam is separated from the
boiling water and remaining water is recirculated.
• Should be of sufficient volume.
• Most important function is separation of steam from boiling water.
• Simplest method is gravity separation but not good at high presssure.
• In high-pressure boilers, mechanical separation that assists gravity
separation takes place in 2 steps: primary & secondary (drying). In Primary
(P), most of the water is removed from steam & prevents carryunder. In
secondary (S) part, remaining fine droplets are removed. Accomplished by
baffles (P), screens (S), plates (P,S) and turbo separators (used at high
pressures).
The Steam Drum
5. Determine the boiler efficiency if the boiler generates 2000 kg/hr of
dry saturated steam at 2 MPa. The rate of coal used is 220 kg/hr and
the calorific value (CV) of coal is 30096 kJ/kg. The outlet temperature
of feedwater is 88 °C.
Solution:
Boiler Efficiency (Numerical)
kg
kJ
h
h
kg
kJ
h
h
C
f
fw
MPa
g
st
/
84
.
367
/
5
.
2799
88
@
2
@
%)
45
.
73
(
7345
.
0
30096
*
220
)
84
.
367
5
.
2799
(
2000
or
CV
m
h
h
m
Supplied
Heat
Load
Heat
fuel
fw
st
st
.
)
(
7. In order to utilize heat of waste flue gases before they are discharged, they are passed
through the heat recovery equipment such as economizer, which heats the feedwater.
Economizer
• Placement: Generally placed before air preheater. In some cases, a low-temperature
economizer (called a stack cooler) is placed after the air preheater.
• Types: There are 2 types: 1) Steaming 2) Non-Steaming
Steaming economizers raise the feedwater temperature to boiling point and
partially evaporate it (x < 0.25). On the other hand, in Non-Steaming
economizers, temperature of water is (20 – 30 °C) below the boiling point.
• Tubes: Cast iron or steel tubes. Plain or extended surface.
• Advantages: These are as follows:
(I) Reduces heat loss by flue gases and, thus, the consumption of fuel as well.
(II) Increases life of boiler.
(III) Improves the efficiency of the boiler installation. Boiler efficiency rises by
about 1% for each 10 °F rise in feedwater temperature.
• Efficiency: The ratio of the heat absorbed by the BFW in the economizer to the
heat supplied by the flue gases in the economizer; the temperature of the flue gases
being reckoned above the temperature of the air supplied to the boiler.
8. Efficiency in Economizer
In a steam generation unit, the inlet and outlet temperature of
feedwater is measured to be 18 °C and 88 °C, respectively.
Atmospheric temperature is 20 °C and the temperature of the entering
flue gas is 350 °C. Determine the economizer efficiency if the boiler
feedwater(fw) and flue gas(g) flow rate is 2,000 kg/hr and 4,150 kg/hr.
Solution:
%)
56
.
42
(
4256
.
0
)
20
350
(
*
005
.
1
*
4150
)
18
88
(
*
184
.
4
*
2000
or
Question: What is the combined efficiency of boiler and economizer?
)
(
.
)
(
.
,
,
,
,
,
atm
in
g
g
p
g
in
fw
out
fw
fw
p
fw
T
T
c
m
T
T
c
m
C
kg
kJ
c
C
kg
kJ
c o
fw
p
o
g
p .
/
184
.
4
;
.
/
005
.
1 ,
,
10. • General: 1) Degree of superheat is the temperature imparted to steam above its
saturation temperature at a given pressure.
2) Final temperature of steam depends upon the flow rate & temperature of (flue) gas
leaving the super-heater section.
3) The (flue) gas temperature should be nearly 175 °C higher than the temperature of
super-heated steam.
4) In modern utility high pressure steam generators, more than 40% of the total heat
absorbed takes place in the superheater.
Superheater
• Tubes: Tubes range from 1-3 in. of diameter. Material used for tubes should have
high temperature strength & high resistance to oxidation. Special steel alloys such as
chromium molybdenum is used for the tubes. Extended surfaces may be added.
• Types: There are 3 types: 1) Convective 2) Radiant 3) Combined
• Advantages: ?
12. Condenser Efficiency
Consider the condenser of steam power plant that is at 10 kPa. If the
inlet and outlet temperatures of cooling water to the condenser are 28
°C and 42 °C, respectively, calculate the condenser efficiency.
Solution:
%)
6
.
78
(
786
.
0
28
81
.
45
28
42
or
i
w
sat
C
i
w
o
w
T
T
T
T
,
,
,
,
C
T
C
T
C
T o
i
w
o
o
w
o
kPa
sat
C 28
;
42
;
81
.
45 ,
,
10
@
,
Rise in temperature of cooling water
Condenser saturation temperature – Inlet temperature of cooling water