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 Preface 
 Indian Innovation - Solar Cooker 
 Types of Solar Cooker 
 Some facts 
 Video based on Solar Cooker 
 Foreign Innovation - Induction Cook 
 History of Induction Cooker 
 Feautres of Induction Cooker 
 Compare and Contrast 
 References 
 Fun Slide
PREFACE 
There are many technologies around us, but still 
people are aware of a few of them. Our project 
is also based on one of the technology and it is 
based upon the creative thinking. “Creative 
Thinking” capability is just about self-confidence 
and attitude. Creativity is frequently 
less ordered, predictable and structured. We 
have compared one Indian Innovation with one 
Foreign Innovation. In compare and contrast of 
the two innovations, we have mentioned their 
advantages and disadvantages.
Extensively Used Innovation In India - Solar Cooker 
A solar cooker is a device which uses the energy of 
direct sunlight to heat, cook or pasteurize food or 
drink. Many solar cookers presently in use are 
relatively inexpensive, low-tech devices, although 
some are as powerful or as expensive as traditional 
stoves, and advanced, large-scale solar cooker can 
cook for hundreds of people because they use no-fuel 
and cost nothing to operate, many nonprofit 
organizations are promoting their use worldwide in 
order to help reduce fuel costs for (low-income 
people) and air pollution, and to slow down 
the deforestation and desertification caused by 
gathering firewood for cooking. Solar cooker has 
been invented in India to reduce the consumption of 
firewood, crop residues and cow dung in rural areas 
for cooking and also these substances are 
unhealthy, unhygienic and these pollute the 
environment.
SOLAR COOKER IS OF TWO TYPES:
Some Facts :- 
India receives 5000 Trillion KWH solar radiation per year with 
250-300 sunny days in a year. 
If we just convert 1% of this solar radiation into energy, we will 
have enough to meet our energy needs 2030. 
Solar energy is in two forms Heat and Light. Heat for water 
heating, cooking , drying, water purification and power 
generation. Light is converted into electricity, which can be 
used for lighting, pumping and power supply in un-electrified 
areas. 
Cooking energy accounts for 90% of household energy 
1.5million people per year die because of smoke from biomass 
fuels.
Do you know? The solar kitchen has been set up at Taleti, 
near Mount Abu, situated at a height of 1219 m 
above sea level in Rajasthan. It boasts of a six-module 
solar steam cooking system and a total 
of 84 parabolic dish concentrators shell type 
receivers. Each oval parabolic concentrator has 
a reflective surface area of 9.2 square meters, 
and reflect sunlight on the receivers by special 
white glass pieces. Steam is collected in the 
header pipes, which is then directed via 
insulated pipes to cooking vessels in the 
kitchen. 
The system generates temperatures of up to 
about 650 degrees, and 3500-4000 kg of steam 
per day. The food is cooked in 200-400 liters 
capacity cooking pots, producing an average of 
20,000 meals a day, and up to 38,500 meals per 
day during periods of peak solar radiation 
maximum.
Here’s a video based on the solar cooker. In this 
video, the person is on a mission to introduce 
solar cookers in some of the remote places of 
Africa. To play the video, please double click on 
the logo (given below) and then click on Open to 
play the video or follow the link. 
https://archive.org/details/linktv_earth2013012418
Foreign Innovation - Induction Cooker 
Induction cooking heats a cooking vessel with 
induction heating, instead of infrared 
radiation from electrical wires or a gas flame as 
with a traditional cooking stove. For all models of 
induction cook-top, a cooking vessel must be made 
of a ferromagnetic metal such as cast iron or 
stainless steel or at least compounded with a steel 
inlay. Copper, glass and aluminum vessels can be 
placed on a ferromagnetic interface disk which 
enables these materials to be used. In an induction 
cooker, a coil of copper wire is placed underneath 
the cooking pot. An alternating electric 
current flows through the coil, which produces an 
oscillating magnetic field. This field induces 
a magnetic flux with a resulting eddy current in 
the pot equivalent to the electric current in the 
coil.
HISTORY OF INDUCTION COOKER 
First patents date from the early 1900s. Demonstration stoves 
were shown by the Frigidaire division of General Motors in the 
mid-1950s on a touring GM showcase in North America. The 
induction cooker was shown heating a pot of water with a 
newspaper placed between the stove and the pot, to 
demonstrate the convenience and safety. This unit, however, 
was never put into production. 
Modern implementation in the USA dates from the early 1970s, 
with work done at the Research & Development Center 
of Westinghouse Electric Corporation at Churchill Borough, 
near Pittsburgh, That work was first put on public display at the 
1971 National Association of Home Builders convention in 
Houston, Texas, as part of the Westinghouse Consumer 
Products Division display. The stand-alone single-burner range 
was named the Cool Top Induction Range. It used 
paralleled Delco Electronics transistors developed for 
automotive electronic ignition systems to drive the 25 kHz 
current. 
Westinghouse decided to make a few hundred production units 
to develop the market. Those were named Cool Top 2 (CT2) 
Induction ranges. The development work was done at the same 
R&D location, by a team led by Bill Moreland and Terry 
Malarkey. The ranges were priced at $1,500, including a set of 
high quality cookware made of Quadraply, a laminate of
Design:-An induction cooker transfers electrical energy 
by induction from a coil of wire into a metal vessel that must 
be ferromagnetic. The coil is mounted under the cooking 
surface, and a large alternating current is passed through it. 
The current creates a dynamic magnetic field. When 
an electrically conductive pot is brought close to the cooking 
surface, the magnetic field induces eddy currents in the pot. 
The eddy currents flow through the electrical resistance of the 
pot to produce heat; the pot then in turn heats its contents 
by heat conduction. 
Efficiency:- An induction cooker is faster and more energy-efficient than a traditional 
electric cooking surface. It allows instant control of cooking power similar to gas 
burners. Other cooking methods that use flames or red-hot heating elements have a 
significantly higher loss to the ambience; induction heating directly heats the pot. 
Because the surface of the cook top is heated only by contact with the vessel, the 
possibility of burn injury is significantly less than with other principles of heating. The 
induction effect does not directly heat the air around the vessel, resulting in further 
energy efficiencies. Cooling air is blown through the electronics beneath the surface but 
emerges only a little warmer than ambient temperature. According to the U.S. 
Department of Energy, the efficiency of energy transfer for an induction cooker is 84%, 
versus 74% for a smooth-top non-induction electrical unit, for an approximate 10% 
saving in energy for the same amount of heat transfer.
Compare And Contrast 
Solar Cooker Induction Cooker 
1. Solar cookers are very easy to use and 
the units require practically no 
maintenance. Cooking with the solar 
cooker is free. 
1. Induction cooking is works with 
electricity, so it is expensive than the 
solar cookers. 
2. Cooking pots can neither burn nor 
boil over, and consequently do not need 
constant supervision. They work with 
most of the metals. 
2. Induction cooker will only work with 
induction cookwares that are made 
from magnetic materials. Cookware 
must be compatible with induction 
heating. 
3. Cooking with solar cookers requires 
sunlight. This makes the process 
difficult during winter months and on 
rainy days 
3. Induction cooker does not reqiure 
sunlight, it works on electricity and we 
can use it whenever we want so it is a 
easy process .
4. Traditional cooking methods 
usually waste the generated heat 
because it is not supplied directly to 
the cookware. The deforestation of 
threatened forests is slowed, and 
carbon-dioxide emissions are 
reduced, because less wood is burnt. 
4. With induction cooking, heat is 
generated in the induction 
cookware directly and will not 
disperse anywhere that is not in 
contact with it. 
5. Solar Cooker usually takes more time 
to cook food than other convectional 
devices. 
5. While induction cookers does not 
reqiure sunlight and it takes less time 
than the solar cooker. 
6. Although solar cookers are easy to 
build and use, there is a risk of 
accidental injury or burns if the 
appliance is not used properly. 
6. Since heat is only transferred from 
the stove to cookware, your palm will 
not get burnt when you place it on the 
stove that has been set at maximum. 
7. If there are electrical interruptions in 
your area , then the solar cookers can be 
used. 
7. Without any electrical charge, 
induction cookers will not be able to 
function.
From:- 
Students of Class IX-N 
School:-Yadavindra Public School ,Mohali 
(Punjab), India 
Group Members:- 
Samar Gill 
Tejeshwar Singh
Useful Innovation
Useful Innovation

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Useful Innovation

  • 1.
  • 2.  Preface  Indian Innovation - Solar Cooker  Types of Solar Cooker  Some facts  Video based on Solar Cooker  Foreign Innovation - Induction Cook  History of Induction Cooker  Feautres of Induction Cooker  Compare and Contrast  References  Fun Slide
  • 3. PREFACE There are many technologies around us, but still people are aware of a few of them. Our project is also based on one of the technology and it is based upon the creative thinking. “Creative Thinking” capability is just about self-confidence and attitude. Creativity is frequently less ordered, predictable and structured. We have compared one Indian Innovation with one Foreign Innovation. In compare and contrast of the two innovations, we have mentioned their advantages and disadvantages.
  • 4. Extensively Used Innovation In India - Solar Cooker A solar cooker is a device which uses the energy of direct sunlight to heat, cook or pasteurize food or drink. Many solar cookers presently in use are relatively inexpensive, low-tech devices, although some are as powerful or as expensive as traditional stoves, and advanced, large-scale solar cooker can cook for hundreds of people because they use no-fuel and cost nothing to operate, many nonprofit organizations are promoting their use worldwide in order to help reduce fuel costs for (low-income people) and air pollution, and to slow down the deforestation and desertification caused by gathering firewood for cooking. Solar cooker has been invented in India to reduce the consumption of firewood, crop residues and cow dung in rural areas for cooking and also these substances are unhealthy, unhygienic and these pollute the environment.
  • 5. SOLAR COOKER IS OF TWO TYPES:
  • 6. Some Facts :- India receives 5000 Trillion KWH solar radiation per year with 250-300 sunny days in a year. If we just convert 1% of this solar radiation into energy, we will have enough to meet our energy needs 2030. Solar energy is in two forms Heat and Light. Heat for water heating, cooking , drying, water purification and power generation. Light is converted into electricity, which can be used for lighting, pumping and power supply in un-electrified areas. Cooking energy accounts for 90% of household energy 1.5million people per year die because of smoke from biomass fuels.
  • 7. Do you know? The solar kitchen has been set up at Taleti, near Mount Abu, situated at a height of 1219 m above sea level in Rajasthan. It boasts of a six-module solar steam cooking system and a total of 84 parabolic dish concentrators shell type receivers. Each oval parabolic concentrator has a reflective surface area of 9.2 square meters, and reflect sunlight on the receivers by special white glass pieces. Steam is collected in the header pipes, which is then directed via insulated pipes to cooking vessels in the kitchen. The system generates temperatures of up to about 650 degrees, and 3500-4000 kg of steam per day. The food is cooked in 200-400 liters capacity cooking pots, producing an average of 20,000 meals a day, and up to 38,500 meals per day during periods of peak solar radiation maximum.
  • 8. Here’s a video based on the solar cooker. In this video, the person is on a mission to introduce solar cookers in some of the remote places of Africa. To play the video, please double click on the logo (given below) and then click on Open to play the video or follow the link. https://archive.org/details/linktv_earth2013012418
  • 9. Foreign Innovation - Induction Cooker Induction cooking heats a cooking vessel with induction heating, instead of infrared radiation from electrical wires or a gas flame as with a traditional cooking stove. For all models of induction cook-top, a cooking vessel must be made of a ferromagnetic metal such as cast iron or stainless steel or at least compounded with a steel inlay. Copper, glass and aluminum vessels can be placed on a ferromagnetic interface disk which enables these materials to be used. In an induction cooker, a coil of copper wire is placed underneath the cooking pot. An alternating electric current flows through the coil, which produces an oscillating magnetic field. This field induces a magnetic flux with a resulting eddy current in the pot equivalent to the electric current in the coil.
  • 10. HISTORY OF INDUCTION COOKER First patents date from the early 1900s. Demonstration stoves were shown by the Frigidaire division of General Motors in the mid-1950s on a touring GM showcase in North America. The induction cooker was shown heating a pot of water with a newspaper placed between the stove and the pot, to demonstrate the convenience and safety. This unit, however, was never put into production. Modern implementation in the USA dates from the early 1970s, with work done at the Research & Development Center of Westinghouse Electric Corporation at Churchill Borough, near Pittsburgh, That work was first put on public display at the 1971 National Association of Home Builders convention in Houston, Texas, as part of the Westinghouse Consumer Products Division display. The stand-alone single-burner range was named the Cool Top Induction Range. It used paralleled Delco Electronics transistors developed for automotive electronic ignition systems to drive the 25 kHz current. Westinghouse decided to make a few hundred production units to develop the market. Those were named Cool Top 2 (CT2) Induction ranges. The development work was done at the same R&D location, by a team led by Bill Moreland and Terry Malarkey. The ranges were priced at $1,500, including a set of high quality cookware made of Quadraply, a laminate of
  • 11. Design:-An induction cooker transfers electrical energy by induction from a coil of wire into a metal vessel that must be ferromagnetic. The coil is mounted under the cooking surface, and a large alternating current is passed through it. The current creates a dynamic magnetic field. When an electrically conductive pot is brought close to the cooking surface, the magnetic field induces eddy currents in the pot. The eddy currents flow through the electrical resistance of the pot to produce heat; the pot then in turn heats its contents by heat conduction. Efficiency:- An induction cooker is faster and more energy-efficient than a traditional electric cooking surface. It allows instant control of cooking power similar to gas burners. Other cooking methods that use flames or red-hot heating elements have a significantly higher loss to the ambience; induction heating directly heats the pot. Because the surface of the cook top is heated only by contact with the vessel, the possibility of burn injury is significantly less than with other principles of heating. The induction effect does not directly heat the air around the vessel, resulting in further energy efficiencies. Cooling air is blown through the electronics beneath the surface but emerges only a little warmer than ambient temperature. According to the U.S. Department of Energy, the efficiency of energy transfer for an induction cooker is 84%, versus 74% for a smooth-top non-induction electrical unit, for an approximate 10% saving in energy for the same amount of heat transfer.
  • 12. Compare And Contrast Solar Cooker Induction Cooker 1. Solar cookers are very easy to use and the units require practically no maintenance. Cooking with the solar cooker is free. 1. Induction cooking is works with electricity, so it is expensive than the solar cookers. 2. Cooking pots can neither burn nor boil over, and consequently do not need constant supervision. They work with most of the metals. 2. Induction cooker will only work with induction cookwares that are made from magnetic materials. Cookware must be compatible with induction heating. 3. Cooking with solar cookers requires sunlight. This makes the process difficult during winter months and on rainy days 3. Induction cooker does not reqiure sunlight, it works on electricity and we can use it whenever we want so it is a easy process .
  • 13. 4. Traditional cooking methods usually waste the generated heat because it is not supplied directly to the cookware. The deforestation of threatened forests is slowed, and carbon-dioxide emissions are reduced, because less wood is burnt. 4. With induction cooking, heat is generated in the induction cookware directly and will not disperse anywhere that is not in contact with it. 5. Solar Cooker usually takes more time to cook food than other convectional devices. 5. While induction cookers does not reqiure sunlight and it takes less time than the solar cooker. 6. Although solar cookers are easy to build and use, there is a risk of accidental injury or burns if the appliance is not used properly. 6. Since heat is only transferred from the stove to cookware, your palm will not get burnt when you place it on the stove that has been set at maximum. 7. If there are electrical interruptions in your area , then the solar cookers can be used. 7. Without any electrical charge, induction cookers will not be able to function.
  • 14.
  • 15. From:- Students of Class IX-N School:-Yadavindra Public School ,Mohali (Punjab), India Group Members:- Samar Gill Tejeshwar Singh