This document discusses solar ponds, which are large bodies of saltwater designed to absorb and store solar energy. There are two main types - salt gradient ponds and membrane ponds. Salt gradient ponds use varying salt concentrations to create layers that inhibit convection while trapping heat. Membrane ponds use thin membranes to separate layers. Examples given are the Bhuj solar pond in India, the El Paso pond in the US, and the Pyramid Hill pond in Australia. Solar ponds can provide process heat for industries like dairy, salt production, and aquaculture. While efficient and environmentally friendly, they have low overall efficiency and require maintenance to remove salt crystals.
A solar cooker is a device which is used to cook food by utilizing the heat energy radiated by the sun.
It utilizes the principle of reflection, concentration, absorption and greenhouse effect to convert sunlight to heat energy.
Most common, inexpensive and easier to build
A solar cooker consists of an insulated metal box or wooden box which is painted all black from inside.
Solar Energy Storage:-
Methods of storage such as sensible, latent heat &
thermochemical storage,selection of method of storage,
properties of storage materials and different arrangements of
storages
Solar collector ppt by Vivek Atalkar.
A solar collector is a device that collects and/or concentrates solar radiation from the Sun. These devices are primarily used for active solar heating and allow for the heating of water for personal use.
Classification of Solar collector
Flat Plate collector
A solar cooker is a device which is used to cook food by utilizing the heat energy radiated by the sun.
It utilizes the principle of reflection, concentration, absorption and greenhouse effect to convert sunlight to heat energy.
Most common, inexpensive and easier to build
A solar cooker consists of an insulated metal box or wooden box which is painted all black from inside.
Solar Energy Storage:-
Methods of storage such as sensible, latent heat &
thermochemical storage,selection of method of storage,
properties of storage materials and different arrangements of
storages
Solar collector ppt by Vivek Atalkar.
A solar collector is a device that collects and/or concentrates solar radiation from the Sun. These devices are primarily used for active solar heating and allow for the heating of water for personal use.
Classification of Solar collector
Flat Plate collector
WED Student Energy Innovation Challenge - Solar pond technologyEenovators Limited
An exploration of solar pond technology using isobutene as the working fluid with an aim of realizing affordable clean energy. A project submitted during the World Energy Day Student Innovation Challenge 2018
PRODUCTION OF POTABLE WATER FROM SEA WATER BY SOLAR ENERGY KuldeepGadhia
This project aims of developing an apparatus which will provide pure drinking water without the need of electric current and expensive filtration apparatus. Solar energy is the energy used in this apparatus. The effectiveness of solar collection is increased by the integration of Fresnel lens. Unconventional desalination systems are costlier and require high maintenance cost. So this situation forced society to depend on conventional technologies. Thus we have built a system to answer the demands of the society. The main aim is to develop an apparatus to provide drinking water for the society with increased feasibility and also at reduced cost with zero carbon emissions.
Introduction to fuels, properties of fuel oil, coal and gas, storage, handling and preparation of fuels, principles of combustion, proximate and ultimate analysis, calorific values, gasification, composition of coal.
Steam System:
Properties of steam, assessment of steam distribution losses, steam leakages, steam trapping, condensate and flash steam recovery system, identifying opportunities for energy savings.
Insulation and Refractories:
Insulation-types and application, economic thickness of insulation, heat savings and application criteria, Refractorytypes, selection and application of refractories, heat loss.
Waste Heat Recovery:
Classification, advantages and applications, commercially viable waste heat recovery devices, saving potential.
An attempt to spread a general awarness among the populace on basics of systems, taking the mystery out and Keeping it simply simple.
We are blessed with Solar Energy in abundance at no cost. The solar radiation incident on the surface of the earth can be conveniently utilized for the benefit of human society. One of the popular devices that harness the solar energy is solar hot water system (SHWS).
A solar water heater consists of a collector to collect solar energy and an insulated storage tank to store hot water. The solar energy incident on the absorber panel coated with selected coating transfers the heat to the riser pipes underneath the absorber panel.
The water passing through the risers get heated up and is delivered the storage tank.
The re-circulation of the same water through absorber panel in the collector raises the temperature to 80 C (Maximum) in a good sunny day. The total system with solar collector, storage tank and pipelines is called solar hot water system.
Icarus design is a Design firm offering services in Industrial design and Branding.
We have been working on several socially relevant projects that we wish to upload here.
These projects are in progress and we are looking for people or organisations to collaborate for this development.
Solar Heating System for Building – Water Heating, Pipe Dimension and Insulat...dbpublications
This paper presents the performance of a solar water heating system equipped with flat plate solar collector panels of numerically identical surface area but of different geometric configuration. The amount of heat acquired from collectors of solar energy depends primarily on the surface area that is exposed to the solar irradiance. The solar thermal water heaters with Thermo-syphon systems using Flat Plate Collectors (FPC) to heating water. The hot water supply through steel pipes and insulation must be necessary to saving heat energy, losses by atmosphere. Polyethylene is the insulating material which is used to insulate over steel pipe. Approximately, 50% efficiency of the solar water heating system (SWHS) was gained when the insulation was used. They efficient and the cost effectiveness are according to the designs of the systems. The places and the climate of the buildings where they locate are the main considerations of the system design.
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.
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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.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
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/
2. CONTENTS
INTRODUCTION
TYPES OF SOLAR PONDS
DISCRIPTION OF SALT GRADIENT SOLAR PONDS
WORKING PRINCIPLE
EXAMPLES
ADVANTAGES
DISADVANTAGES
APPLICATIONS
CONCLUSION
REFERENCES
3. INTRODUCTION ::
•A solar pond is a large scale solar thermal
collector with an integrated arrangement
for storage of heated water
•Solar ponds are unique in their ability to
gather and store energy simultaneous
4. TYPES OF SOLAR PONDS ::
nonconvecti
Non
convective
solar ponds
Convective
solar ponds
There are two types of solar ponds
SOLAR PONDS
5. Non convective ponds ::
There are two main types of non convective ponds
Salt
gradient
ponds
Membrane
ponds
NON CONVECTIVE PONDS
6. DESCRIPTION OF SALT GRADIENT SOLAR PONDS ::
• Pond structure is 1 or 2 meters depth.
• A thick durable plastic liner is laid at the bottom of that pond,
materials used for the liner are
High density polythene
Low density polythene
Woven polyester yarn
• Salts like magnesium chloride, sodium chloride or sodium
nitrate are dissolved in the water , the concentration varying
from 20 to 30 percent at the bottom to almost zero at the top.
7. • . In the salt-gradient ponds , dissolved salt is used to create layers of water
with different densities-the more salt, the denser water .Thus a solar pond has
three zones with the following salinity with depth :
1) Surface convective zone (SCZ)
2) Non-convective zone (NCZ)
3) Storage zone(or) lower convective zone (LCZ)
SURFACE CONVECTIVE ZONE(SCZ) ::
• SCZ has a thickness around 0.3 to 0.5 meters.
• SCZ has a low uniform concentration and temperature close to ambient
temperature.
8. NON CONVECTIVE ZONE (NCZ)::
• The non convective zone is much thicker and occupies more than half the
depth of the pond I.e. 0.9 to 1.2 meters .
• Both the concentration and the temperature increase with the depth .
STORAGE ZONE ( OR ) LCZ ::
• Storage zone or LCZ having a thickness of around 0.5 meters .
• Both the concentration and temp are constant in this zone.
9.
10. WORKING PRINCIPLE ::
• When the sun rays contact the bottom of a shallow pool, they heat the
water adjacent to the bottom . When water at the bottom of the pool is
heated, it becomes less dense than the cooler water above it,
and convection begins. Solar ponds heat water by inhibits this
convection. This entire process is taking at storage zone (or) LCZ
• High-salinity water at the bottom of the pond does not mix readily with
the low-salinity water above it, so when the bottom layer of water is
heated, convection occurs separately in the bottom and top layers, with
only mild mixing between the two. This greatly reduces heat loss, and
allows for the high-salinity water to get up to 90 °C while maintaining
30 °C low-salinity water (SCZ)
• This hot, salty water can then be pumped away for use in electricity
generation, through a turbine or as a source of thermal energy.
11.
12.
13.
14. Membrane ponds::
• The membrane pond inhibits convection by
physically separating the layers with thin
transparent membranes. As with salt
gradient ponds, heat is removed from the
bottom layer
15. Convective solar ponds
• convective solar pond is the shallow solar pond.This pond
consists of pure water enclosed in a large bag that allows
convection but hinders evaporation. The bag has a blackened
bottom, has foam insulation below and two types of glazing
(sheets of plastic or glass) on top.The sun heats the water in the
bag during the day. At night the hot water is pumped into a
large heat storage tank to minimize heat loss.
• Excessive heat loss when pumping the hot water to the storage
tank has limited the development of shallow solar ponds.
16. EXAMPLES ::
BHUJ SOLAR POND
El PASO SOLAR POND
PYRAMID HILL SOLAR POND
17. BHUJ SOLAR POND
• The 6000-square-metre solar pond in Bhuj, the first large-scale pond in
industrial environment to cater to actual user demand.
• It was the first experiment in India, which successfully demonstrated the use of
a solar pond to supply heat to an actual industrial user.
• The Bhuj solar pond was conceived as a research and development project of
TERI, which took over nine years to establish, to demonstrate the feasibility of
using a salt gradient pond for industrial heating
• It supplied totally about 15 million litres of hot water to the dairy at an average
temperature of 75°C between September 1993 and April 1995
• The solar pond is 100 m long and 60 m wide and has a depth of 3.5 m. The pond
was then filled with water and 4000 tonnes of common salt was dissolved in it
to make dense brine
• The Bhuj solar pond constructed by the Tata Energy Research Institute
(TERI).But sadly, today lies in disuse due to lack of financial support by the
government .
19. El PASO SOLAR POND ::
•The El Paso Solar Pond project is a demonstration
project initiated by the University of Texas at El Paso in
1983
•Over 90 graduate and undergraduate students have
been involved in the project, performing tasks ranging
from construction to applied research.
•It has operated since May 1986 and has successfully
shown that process heat, electricity, and fresh water can
be produced in the southwestern United States using
solar pond technology
21. PYRAMID HILL SOLAR POND::
• A consortium of RMIT University, Geo-Eng Australia Pty Ltd and Pyramid
Salt Pty Ltd has completed a project using a 3000 square metre solar
pond located at the Pyramid Hill salt works in northern Victoria to
capture and store solar energy using pond water which can reach up to
80°C
• It is planned in a subsequent stage of the project to generate electricity
using the heat stored in the solar pond, thus making this local industry
more energy self-sufficient.
• At the local level this will be a significant boost in an area with high
unemployment and a depressed economy
23. ADVANTAGES::
• Environment friendly energy – no pollution!
• Low maintenance costs.
• Reliable energy source
• Can be constructed according to
requirements.
24. DISADVANTAGES::
• Require a specific location that is not readily
available in all areas.
• Low efficiency
• The Accumulating salt crystals has to be
removed frequently
25. APPLICATIONS ::
Salt production (for enhanced evaporation or purification of
salt, that is production of ‘vacuum quality’ salt)
Aquaculture, using saline or fresh water (to grow, for
example, fish or brine shrimp)
Dairy industry (for example, to preheat feed water to boilers)
Fruits and vegetables canning industry
Fruit and vegetable drying
Grain industry (for grain drying)
Water supply (for desalination) .
26. CONCLUSION ::
• I conclude that since solar pond technology is the
cheapest and environment friendly process , therefore
solar ponds can be effectively used as replacements in
industries that use fossil fuel to generate thermal energy.
Even though efficiency of this technology is not so good
but we can achieve it by making developments in the
process. I think it will be the future energy source.
27. REFERENCES::
• Fundamental of renewable energy systems by D.MUKHERJEE
• Solar pond technology research journal by K.Goutham, C.Siva krishna
• https://www.britannica.com/technology/solar-pond
• www.eren.doe.gov/consumerinfo/refbriefs/aa8.html (USA dept. of energy )
• https://en.wikipedia.org/wiki/Solar_pond
• http://www.authorstream.com