Solar thermal systems harness solar energy to produce heat that can then be used for applications like generating electricity or providing hot water. They have several advantages over photovoltaic solar cells, as they can absorb nearly the entire solar spectrum and are more efficient. There are different types of solar collectors classified by their concentrating temperature as low-temperature flat plate collectors, medium-temperature line focusing collectors like parabolic troughs, and high-temperature point focusing collectors including central towers. Solar thermal technology has been developed over centuries and is now used commercially around the world to provide electricity, heating, cooling, and hot water in a renewable way with low emissions, though the initial costs are high and they require significant amounts of land and water.
• Design and fabrication of a Vapor absorption Refrigeration using solar energy.Nagaraja D Shenoy
The use of solar energy to power refrigeration with replacing the compression cycle with vapor absorption cycle strives to minimize the negative impacts refrigerators have on the environment and energy. Replacing the electrical energy with solar energy will reduce the consumption of high grade electrical energy. Ammonia being an environmentally friendly gas reduces the effect of ozone layer depletion and global warming by artificial refrigerants. This project deals with a model solar thermal refrigeration system using NH3-H2O vapor absorption system
• Design and fabrication of a Vapor absorption Refrigeration using solar energy.Nagaraja D Shenoy
The use of solar energy to power refrigeration with replacing the compression cycle with vapor absorption cycle strives to minimize the negative impacts refrigerators have on the environment and energy. Replacing the electrical energy with solar energy will reduce the consumption of high grade electrical energy. Ammonia being an environmentally friendly gas reduces the effect of ozone layer depletion and global warming by artificial refrigerants. This project deals with a model solar thermal refrigeration system using NH3-H2O vapor absorption system
Introduction to solar thermal system
Working of solar thermal system
Solar collector
Type of solar collector
Solar water heater
Solar heating and cooling
Solar refrigeration and air conditioning
Advantage and Disadvantages
“SEMINAR REPORT ON SOLAR ASSISTED VAPOUR ADSORPTION REFRIGERATION SYSTEM”Bhagvat Wadekar
SUMMARY
The range of COP for the Solar VAdRS is 0.2 - 0.7. The development of adsorption system for refrigeration is promising. An overall thermodynamics-based comparison of sorption systems shows that the performance of adsorption systems depends highly on both the adsorption pairs and processes. The technology continues to develop and the cost of producing power with solar thermal adsorption refrigeration is falling. If the costs of fossil fuels, transportation, energy conversion, electricity transmission and system maintenance are taken into account, the cost of energy produced by solar thermal adsorption systems would be much lower than that for conventional refrigeration systems.
The intermittent system has its simplicity and cost effectiveness. However, the main disadvantages such as long adsorption/desorption time have become obstacles for commercial production of the system. Hence, to compete with conventional vapor compression technologies, more efforts should be made in enhancing the COP and SCP. The environmental benefits of this technology and its non-dependence on conventional energy sources makes it highly attractive for further developments and a potential alternative to conventional systems in the future. The future of solar refrigeration and air conditioning seems to be a very good proposition and no doubt will find its place in future industrial applications. The major limiting factor at present is the shape of energy so as to make it available whenever it is required, for example at nights and extended cloudy days when we cannot attain a high enough temperature.
Phase Change Materials(PCM) based solar refrigerationVishvesh Shah
Topics to be Covered
Refrigeration Using solar Energy
Introduction
Solar PV Based Refrigeration
Solar Absorption Refrigeration
Energy Storage Systems
Battery
Phase Change Materials
Solar Refrigeration System Model Studies
Solar powered refrigerator with Thermal Energy Storage
Solar Direct Drive Refrigerator for Vaccine Storage
Process of converting solar thermal energy (heat) into conditioned air.
Eco-friendly as well as Energy-efficient.
Can be operated with green resources of heat as backup resources when solar radiation is unavailable
A heat pipe heat exchanger is a simple device which is made use of to transfer heat from one location to another, using an evaporation-condensation cycle.
A passive solar system heat-driven convection or heat pipes to circulate the working fluid. Passive systems cost less and require low or no maintenance, but are less efficient. Overheating and freezing are major concerns.
An active solar system use one or more pumps to circulate water and/or heating fluid. This permits a much wider range of system configurations.
In this presentation, we have described solar thermal collectors,
Concentrating collectors as well as non concentrating collectors, their working and their components.
Introduction to solar thermal system
Working of solar thermal system
Solar collector
Type of solar collector
Solar water heater
Solar heating and cooling
Solar refrigeration and air conditioning
Advantage and Disadvantages
“SEMINAR REPORT ON SOLAR ASSISTED VAPOUR ADSORPTION REFRIGERATION SYSTEM”Bhagvat Wadekar
SUMMARY
The range of COP for the Solar VAdRS is 0.2 - 0.7. The development of adsorption system for refrigeration is promising. An overall thermodynamics-based comparison of sorption systems shows that the performance of adsorption systems depends highly on both the adsorption pairs and processes. The technology continues to develop and the cost of producing power with solar thermal adsorption refrigeration is falling. If the costs of fossil fuels, transportation, energy conversion, electricity transmission and system maintenance are taken into account, the cost of energy produced by solar thermal adsorption systems would be much lower than that for conventional refrigeration systems.
The intermittent system has its simplicity and cost effectiveness. However, the main disadvantages such as long adsorption/desorption time have become obstacles for commercial production of the system. Hence, to compete with conventional vapor compression technologies, more efforts should be made in enhancing the COP and SCP. The environmental benefits of this technology and its non-dependence on conventional energy sources makes it highly attractive for further developments and a potential alternative to conventional systems in the future. The future of solar refrigeration and air conditioning seems to be a very good proposition and no doubt will find its place in future industrial applications. The major limiting factor at present is the shape of energy so as to make it available whenever it is required, for example at nights and extended cloudy days when we cannot attain a high enough temperature.
Phase Change Materials(PCM) based solar refrigerationVishvesh Shah
Topics to be Covered
Refrigeration Using solar Energy
Introduction
Solar PV Based Refrigeration
Solar Absorption Refrigeration
Energy Storage Systems
Battery
Phase Change Materials
Solar Refrigeration System Model Studies
Solar powered refrigerator with Thermal Energy Storage
Solar Direct Drive Refrigerator for Vaccine Storage
Process of converting solar thermal energy (heat) into conditioned air.
Eco-friendly as well as Energy-efficient.
Can be operated with green resources of heat as backup resources when solar radiation is unavailable
A heat pipe heat exchanger is a simple device which is made use of to transfer heat from one location to another, using an evaporation-condensation cycle.
A passive solar system heat-driven convection or heat pipes to circulate the working fluid. Passive systems cost less and require low or no maintenance, but are less efficient. Overheating and freezing are major concerns.
An active solar system use one or more pumps to circulate water and/or heating fluid. This permits a much wider range of system configurations.
In this presentation, we have described solar thermal collectors,
Concentrating collectors as well as non concentrating collectors, their working and their components.
A solar power plant is based on the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses, mirrors, and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics converts light into electric current using the photoelectric effect. The largest photovoltaic power plant in the world was the 354 MW Solar Energy Generating Systems (SEGS) CSP installation located in the Mojave Desert, California. But now the largest is in india, India owns world's largest solar power plant - Believe it or not | The Economic ... Other large CSP plants include the 250 MW Agua Caliente Solar Project in Arizona, the Solnova Solar Power Station (150 MW, 250 MW when finished) and the Andasol solar power station (150 MW), both in Spain.
Concentrated solar power plants first appeared in the 1980s. Solar power is increasingly used.
Solar thermal power generation systems use mirrors to collect sunlight and produce steam by solar heat to drive turbines for generating power. This system generates power by rotating turbines like thermal and nuclear power plants, and therefore, is suitable for large-scale power generation.
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Evolution of Quality Control, concept change, TQM Modern concept, Quality concept in design, Review of design, Evolution of proto type. Control on Purchased Product: Procurement of various products, evaluation of supplies, capacity verification, Development of sources, procurement procedure. Manufacturing Quality: Methods and techniques for manufacture, inspection and control of product, quality in sales and services, guarantee, analysis of claims.
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Did you mean: Evolution of Quality Control, concept change, TQM Modern concept, Quality concept in design, Review of design, Evolution of prototype. Control on Purchased Product: Procurement of various products, evaluation of supplies, capacity verification, Development of sources, procurement procedure. Manufacturing Quality: Methods and techniques for manufacture, inspection and control of product, quality in sales and services, guarantee, analysis of claims.
UNIT I - QUALITY MANAGEMENT - SlideSharehttps://www.slideshare.net › unit-i-39226030
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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.
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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.
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2. TOPICS
•Introduction to solar thermal system
•Working of solar thermal system
•Solar collector
•Type of solar collector
•Solar water heater
•Solar heating and cooling
•Solar refrigeration and air conditioning
•Solar-cookers,dryers,distillation
•Advantage and Disadvantages
3. Introduction:
Sun is the most abundant,reliable and renewable source of energy.
This energy can be harnessed by two way:
1).Solar thermal 2).Solar photovoltaic
Solar thermal energy is the advance techniques which produces maximum efficient
enrgy compare to photovoltaic cell.
4. Year Description
1866 Auguste Mouchout used a parabolic trough to produce steam for the first solar steam
engine
1886 First patent for a solar collector was obtained by the Italian Alessandro Battaglia in
Genoa, Italy
1913 Frank Shuman finished a 55 HP parabolic solar thermal energy station in Maadi, Egypt
for irrigation
1929 First solar-power system using a mirror dish was built by American Scientist Dr. R.H.
Goddard.
1968 First concentrated-solar plant, which entered into operation in Sant'Ilario, near Genoa,
Italy
1984 Parabolic-trough technology of the Solar Energy Generating Systems (SEGS) begun its
combined capacity354 MW.
2014 World's largest solar thermal plant (392 MW) achieves commercial operation in Ivanpah
Califoma, USA
History
5. Solar thermal system:
•Solar thermal power (electricity) generation systems
collect and concentrate sunlight to produce the high
temperature heat needed to generate electricity.
•Solar thermal collectors can absorb nearly the entire
solar spectrum.
•Thus concentrated solar power (CSP) technology is
more efficient than photovoltaic solar cells.
6. Solar collector:
• Solar power has low density per unit area (1
kW/sq. m. to 0.1 kW/sq. m.) hence it is to be
collected by covering large groundarea.
• Solar thermal collector essentially forms thefirst
unit in a solar thermalsystem.
• It absorbs solar energy as heat and then
transfers it to heat transport fluidefficiently.
• The heat transport fluid delivers this heat to
thermal storage tank / boiler /heat exchanger,
etc., to be utilized in the subsequent stages of
the system.
7. Concentrating solar
technologies
Low temperature (<100 C)
Medium temperature-line
focusing(<400 C)
High temperature –point
focusing(>400 C)
1. flat plate collector
2. solar chimney
3. solar pond
1. Parabolic
trough
collector(PTC)
2. Fresnel collector
1. Central tower collector
2. Parabolic dish collector
Classification of solar collector on basis of their concentrating temperature
8. 1.Low temperature collectors (<100"C):
Flat plate solar collector
Flat plate collector is basically a black surface
that is placed at a convenient path of a sun
The sun heats a dark flat surface, and then the
energy is transferred to water, air, or other fluid
for further use•
These are used in domestic house hold purpose
like water heating & space heating etc.They
operate in the temperature range from 30 to 80
"C.
9. 2. Medium temperature collectors–
Line focusing (<400 °C):
Parabolic trough collector (PTC):
•Parabolic trough is the linear-focus collector.
•It consists of a cylindrically curved parabolic mirror,
which reflects the sunlight onto a tubular receiver
positioned in the focus line of the parabola..
•The tubular receiver contains the fluid that absorbs
heat and transfers it via circulation to the boiler or
another device to produce steam.
•PTCS are made by simple bending a sheet of
reflective or highly polished material into a parabolic
shape.
10. 3. High temperature collectors–
Point focusing (>400 "C):
Central tower collector:
•In this system multiple tracking mirrors (heliostats)
positioned in the field around central receiver installed on
a tower
•These systems are capable of reaching of much higher
levels of concentration than linear systems
•Typically 80 to 95% of the reflected energy is absorbed
into the working fluid which is pumped up into the receiver
•The working fluid is used as heat source to produce
steam and convert it to electricity•
• The generated thermal energy can be stored in amolten
salt storage
11. Solar water heater
A Solar Water Heater is a device which provides
hot water for bathing, washing, cleaning, etc. using
solar energy.
It is generally installed at the terrace or where
suntight is availableA tilted flat plate solar collector
with water as heat transfer fluid is used.
12. Working of solar water heater
• A thermally insulated hot water storage tank is mounted above the collector.
•The heated water of the collector rises up to the hot water tank and replaces an equal
quantity of cold water, which enters the collector.
• The cycle repeats, resulting in all the water of the hot water tank getting heated up.
•When hot water is taken out from hot water outlet, the same is replaced by cold water from
cold-water make up tank fixed above the hot water tank. The scheme is known as passive
heating scheme,
•When the collector is fixed above the level of hot water tank, a pump is required to induce
circulation of water in the loop and the scheme will be known as active (or forced) solar
thermal system
13. Solar heating and cooling technology:
solar heating
•Solar heating and cooling technology receive the
thermal energy from sun and utilize this energy to
provide hot water, space heating and pool heating for
residential, commercial and industrial applications.
•These applications of SHCS reduce the dependency
on electricity or natural fuels.
• The main function of solar system is to convert sun
light into heat.
•The primary requirement of SHCS is to setup the light
collectors with higher efficiency
14. Active and passive Solar heating:
ACTIVE SOLAR HEATING:
• This system can be used as commercial hot
water as well as space heat.
• A space heat application involves some
additional connecting hardware for space
heat distribution system.
• Active solar heating system involve
following major components:Collectors to
absorb energy,Circulation system,Storage
tank,Backup heating system, Control system
PASSIVE SOLAR HEATING:
•Passive solar heating is the least costly
technique to heat home space.
•The main aim of this system is to kept out heat
in summer and kept in heat in winter from sun
light.
•Passive solar heating also depends on
ventilation or windows provided in buildings
or houses.
15. Solar cooling
Solar cooling is a technology that converts sun light heat energy into useful
cooling of buildings. The process works by using solar heat collecting and
supplied this heat to the thermal cooling system, to generate chilled water.
16. Solar air conditioning and refrigeration:
Solar refrigeration
•The principle of absorption refrigeration was
first demonstrated by Faraday in 1825. Thus,
this is one of the oldest cycles for producing
refrigeration effect, which differs fundamentally
from the conventional vapour compression
cycle in the method for compressing the
refrigerant.
•Refrigerator which run on electricity provided
by solar energy is known as solar refrigeration
17. Working of solar refrigerator
•In absorption cycle cooling systems two working fluids: a refrigerant and an absorbent-refrigerant solution are used.
•The absorbent-refrigeration combination is so chosen that the absorbent have high affinity for the refrigerant and at the same
temperature, vapour pressure of the refrigerant is higher than that of absorbent.
•The absorbent cooling is based on the principle that the refrigerant can be bound by a liquid or solid solvent, known as
absorbent to release heat during absorption, while it absorbs heat during evaporation (and thus producing cooling effect).
•Though large number of refrigerant-absorbent combination is possible, the two most common and commercially tried
combinations are: LiBr-water (LiBr as absorbent and water as 176 Non-Conventional Energy Resources refrigerant)and
aqua-ammonia (water as absorbent and ammonia as refrigerant).
•In the former the absorbent is a solid (a salt) whereas in the later it is a liquid.
•The performance of a cooling cycle is judged from its COP (coefficient of performance), which is defined as the ratio of
amount of cooling produced to the energy input.
18. Solar air conditioning and refrigeration:
Solar air conditioning:
•Air-conditioning is one of the majorconsumers of electrical
energy.
•The demand can be expected to increase because of changing
working times, increased comfort expectations and global
warming.
•Solar air-conditioning might be a way to reduce the demand
for electricity.
•Process of converting solar thermal energy (heat) into
conditioned
19. Conventional vs solar air conditioning
CONVENTIONAL AIR CONDITIONING
•When a liquid gas changes its state, it
takes or extract heat.
•At lower pressure, state changes at lower
temp.
•Extraction of heat means cooling.
•Gas gets compressed when heated.
•Gaseous refrigerant compressed and then
heated up in the solar panel up to 90°C.
SOLAR AIR CONDITIONING
•In this system, water is used as the
refrigerant while lithium bromide (Li
Br)/ammonia is used as the absorbent
•In the absorber, the lithium bromide
absorbs the water refrigerant, creating a
solution of water and lithium bromide
•Lithium bromide has great affinity for
water vapour, however, when the water.
lithium bromide solution is formed, they
are not completely soluble with each other
20. Advantage and Disdvantages
ADVANTAGES
There will be no fuel cost as the power plant runs by sun
energy
It doesn't cause pollution and global warming effects
It uses existing equipment like solar thermal mirrors, turbines
etc.
Can store energy using molten salts instead of using batteries
Uses less space than photovoltaics for same energy
generation output
Running costs of solar thermal are cheaper than coal or gas
plants
DISADVANTAGES
The initial capital costs for solar thermal islarge
Uses lot of water which is major problem in desert areas
Usage of massive arrays of mirrors impacts thewildlife
species
These plants can be installed only in places whichhave
high amount of solar radiation
Solar thermal can't be installed in residentialarea
Build time would be longer than other forms ofenergy
generation