This document provides information about hydrogen generation at Simhadri power plant. It discusses the need for hydrogen as a cooling medium, and then outlines the various technologies used to produce hydrogen on-site through alkaline electrolysis. The key components of the electrolysis process are described, including rectifiers, electrolyzer cells, gas holders, compressors, and purification equipment. Safety aspects and statutory requirements are also covered at a high level.
Nepal is currently reeling under acute fuel crisis due to undeclared economic blockade by India. Transportation and cooking are two main areas that have been severely affected due to the fuel shortages. Alternative sources of cooking fuels have become a crucial topic of research and investigation on an international scale and Nepal may require such unconventional solutions to cope with the crisis that does not seem to be winding down anytime soon. The utilization of Hydrogen as an energy carrier with regards to domestic cooking has been explored and studied by countless experts over the years and is still a relatively novel concept that requires further exploration.
Super critical boiler manufacturing and working. Working cycle of Steam and water. Difference between sub critical and super critical boiler. Manufacturing process and definition of parts of boiler.
Green hydrogen Basics - Overview_Jan 2022Gurudatt Rao
This brief presentation gives an overview of different aspects of 'Green Hydrogen' along with challenges linked to its adoption considering Climate Change and Energy Diversification.
Today it's easy to start using your existing wind / solar power to become a producer of clean green hydrogen - so you can produce, distribute and sell the hydrogen at the highest bidder - and thus creating a second revenue stream from your renewable power generation - extremely interesting when the guaranteed feed-in tarif comes to an end!
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Super Critical Technology-Fundamental Concepts about Super Critical Technolog...Raghab Gorain
Nicely describe everything about super critical technology in thermal power plant.This slide is very useful for the freshers.Anybody can get the basic fundamental idea about super critical technology from this slide. In India now we have to think some new technology for power sources as sub critical power plants are less efficient and emit more pollutant to the environment and the alternative is the 'Super Critical Power Plant'.
Nepal is currently reeling under acute fuel crisis due to undeclared economic blockade by India. Transportation and cooking are two main areas that have been severely affected due to the fuel shortages. Alternative sources of cooking fuels have become a crucial topic of research and investigation on an international scale and Nepal may require such unconventional solutions to cope with the crisis that does not seem to be winding down anytime soon. The utilization of Hydrogen as an energy carrier with regards to domestic cooking has been explored and studied by countless experts over the years and is still a relatively novel concept that requires further exploration.
Super critical boiler manufacturing and working. Working cycle of Steam and water. Difference between sub critical and super critical boiler. Manufacturing process and definition of parts of boiler.
Green hydrogen Basics - Overview_Jan 2022Gurudatt Rao
This brief presentation gives an overview of different aspects of 'Green Hydrogen' along with challenges linked to its adoption considering Climate Change and Energy Diversification.
Today it's easy to start using your existing wind / solar power to become a producer of clean green hydrogen - so you can produce, distribute and sell the hydrogen at the highest bidder - and thus creating a second revenue stream from your renewable power generation - extremely interesting when the guaranteed feed-in tarif comes to an end!
Compressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAESCompressed Air Energy Storage CAES
Super Critical Technology-Fundamental Concepts about Super Critical Technolog...Raghab Gorain
Nicely describe everything about super critical technology in thermal power plant.This slide is very useful for the freshers.Anybody can get the basic fundamental idea about super critical technology from this slide. In India now we have to think some new technology for power sources as sub critical power plants are less efficient and emit more pollutant to the environment and the alternative is the 'Super Critical Power Plant'.
A short slideshow about different areas of application of magneto-optical sensor systems to visualize magnetic fields’ areal distribution in real time.
Lattice Energy LLC - Production of Gold via LENR transmutation of Platinum in...Lewis Larsen
Presently, unbeknownst to unsuspecting drivers worldwide, green LENR transmutation processes are occurring at very low rates during operation of three-way catalytic converters installed in over a billion cars and trucks.
Radiation-free nuclear transmutation of chemical elements by LENRs inside catalytic converters is strongly indicated by the presence of anomalous Gold, excess radiogenic Osmium, and shifts toward heavier isotopes that have been reported in Platinum and Palladium found in micron-scale nanoparticles that are emitted from vehicle exhaust pipes.
Extensive sampling and chemical analysis of certain roadway dust and roadside soils by environmental scientists have revealed that in scattered locations nanoparticulate Gold emitted from motor vehicle exhaust has accumulated to the point where local concentrations of this precious metal nearing key minimum threshold of 0.5 ppm needed for economic Gold ore.
This surprising nuclear activity in ubiquitous catalytic converters and absence of deleterious consequences for drivers or Earth’s environment argue that world is already safely coexisting with LENRs. This supports idea that LENRs could potentially be a very attractive future source of green nuclear energy if the technology is successfully commercialized.
Faculty of Engineering & Technology , Gurukula Kangri University , Haridwarashwini kumar
Topic:- Tachometer
Description :- This is use to measure the speed of rotating machines in rpm....
Ashwini kumar
Electrical Engineering
ashwinikmr555@gmail.com
+919027134556
Secure Image Encryption using Two Dimensional Logistic Map
* Gangadhar Tiwari1, Debashis Nandi2, Abhishek Kumar3, Madhusudhan Mishra4 1, 2Department of Information Technology, NIT Durgapur (W.B.), India 3Department of Electronics and Electrical Engineering, NITAP, (A.P.), India 4Department of Electronics and Communication Engineering, NERIST, (A.P.), India
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWARashwini kumar
THIS PROJECT IS RELATED TO GAS INSULATED SUBSTATION,,IN THIS SUBSTATION SF6 GAS IS USED
ASHWINI KUMAR
ELECTRICAL ENGINEERING(FINAL YEAR)
ashwinikmr555@gmail.com
+919027134556
one of the renewable energy resources project that help me lot to my carrier in research field : this slide is for the prototype model that i design actual full scale size may be bit of different from my calculations and data's
INDUSTRIAL WASTE HEAT USED IN TYPICAL THERMAL POWER PLANTIAEME Publication
An advanced waste heat and water recovery technology has been developed to extract a portion of the water vapor and its latent heat from flue gases based on a nonporous ceramic membrane capillary condensation separation mechanism. The recovered water is of high quality and mineral free, therefore can be used as supplemental makeup water for almost all industrial processes. The technology was first developed and proven at industrial demonstration scale for gas-fired package boilers,
2. Presentation layout
Need for Hydrogen
Facts & Merits of Hydrogen
Technologies of Hydrogen production
Hydrogen generation at Simhadri
Safety aspects
Statutory requirements
2
3. Need for Hydrogen
Generator cooling
Stator core
Rotor core
Rotor winding
3
4. Facts about hydrogen
Lightest element
Atomic number 1.
Density of Hydrogen =0.07
Most abundant element in the Universe. Not
naturally found in atomic state on earth. Bound to
other elements as Compound.
Normal boiling point of – 253°C (- 423°F)
Flammable
Colourless & Odorless
Non Toxic & Non Corrosive
4
5. Merits of hydrogen
Thermal conductivity 5 times more than air.
Higher specific heat
3.42 at 0 degC as compared to 0.237 of air.
538 degC is ignition temp in air.
Low density& light gas (14 times lighter)
Very good heat transfer property.
Less drag, Low windage & frictional losses.
Better circulation.
7. Technologies of H2 production
7
Electrolysis of water
Electro-chemical cell
Natural H2 extraction
8. H2 production in Simhadri
Alkaline Electrolysis
Suited for stationary applications
produce high purity hydrogen.
significantly costlier.
High rate of gas generation
8
13. Main components
Rectifiers : Make M/s HIND, (DC 9V, 2270A)
Electrolyser (Stuart Cell)
Gas Holders (Liquid Floating Type)
Compressors (Diaphragm Type)
Purification Skid
Manifold
Vacuum Pump
13
14. Rectifier
Parameter Rating
Input 3-ph, 415V ac, 45A
Output DC 9V,
2270A (20% -100% operating range),
6pulse o/p
Type of control Constant current by means of SCR
Specification IEC-146
Cooling Air forced (Rectifier & control panel)
14
15. Rectifier
6-pulse centre-tap
converter with Inter
group reactor.
It is formed by 2 no.s of 3-
ph half wave converters
with a phase shift of л
connected in parallel
through IGR.
Each SCR conducts for
2 л /3 (л /3 if no IGR)
IGR absorbs
instantaneous Potential
difference between
common cathodes.
15
16. Stuart Cell
Sealed Unipolar type Cells
3- plate cell having
1 nickel plated iron anode plate
2 iron cathode plates
MOC: Mild Steel / IS: 2062 / 1079
KOH solution (concentration of 28-
30%)
Low Voltage system to ensure safe
condition (2.2 volts Each)
Capacity : 3.75 cum/hr @2800A
Two streams in service
Capacity 2X 3.75 =7.5 cum/hr
Generated H2 Gas Purity > 99.8%
16
17. Gas holder
Two gas holders
One for receive gas from
generation
Other for supply gas to the
compressors.
Buffer vessel
Water sealed liquid floating
MOC : mild steel
Tank & Bell construction
Operating Pressure 125 mmwc
Limit Switches on both high and
low levels of the tank to
maintain right amount of Gas
within the vessel with all
necessary interlocks.
17
18. Compressors
Diaphragm Type
Two Stage compression
1 st 20 kg/cm2
2nd 170 kg/cm2
Isothermal Process of
compression
Hydraulic oil is the
motivating force
Cap: 4.7 cum/hr (Each)
Two in service , One as
stand by.
18
19. Purification skid
Removal of O2 impurity in H2
gas by means of a Catalytic
purifier (Palladium based).
Coalescing Filters to remove
moisture in H2 gas.
Dual Tower regenerative
Desiccant Dryer (Molecular
Sieve) to achieve the necessary
Dew Point.
Filters to remove particulate
carry over traces in the product
H2 gas
Generated H2 gas
purity > 99.99% ,
Due point < - 40 Deg.C.
19
20. Manifold
Filling of high purity H2 in
cylinders at high pressure @
140 kg /cm2
Provision for connecting to
vacuum pump for ensuring
“No foreign gas/ positive
hydrogen
Provision for venting to
atmosphere in case of purity
less than required.
Maintain positive pressure in
hydrogen cylinder to prevent
introduction of air
20
21. Process parameters
21
Parameter Value
DM water conductivity < 4 μS/cm
Sp.gr. of electrolyte KOH 1.20 -1.23
Cell voltage 2.2V
Current 2000Amps
Operating Temp 50 degC
Purity >99.99%
Dew point < -40 deg C
Filled Cylinder Pressure 140kg/cm2
23. Safety aspects
KOH is strong Alkali , hazardous,
Use PPE Ensure Availability of
Emergency Shower
Oxygen generated is combustible &
hence to be vented . Ensure no
open flames near venting area.
H2 is flammable and may form
mixtures with air that are
flammable or explosive.
23
24. Statutory Requirements
24
License/ Testing Frequency
License from ministry of explosives
for
• Generation
• Filling
• Storage
• Night Shift operation
Expiring on
30.09.2015
Hydro static Stretch test of Cylinders
@250kg/cm2
Every 5 years
In actual hind rectifier ckt, IGR (or IPT) is provided between star points of both set of windings.
One demerit of centre tap circuit is that the load current must not fall below a min. limit, which is the peak magnetizing current of IGR. If this happens, the circuit reverts to 6-pule wye converter operation and the load voltage raises by 15% at alpha =0.
Amounts of gases produced are directly proportional to dc current.