Solar Energy:
A set up of solar energy which converts sunlight into electrical energy, as the demand for electricity increases day by day and we have limited sources of energy so now solar energy is the renewal and free source to get.
A French scientist A.E becquerel first discovered the power of solar energy, he told the world that we can generate electricity with the help of solar energy.
Presently approx 2%of the world's electricity is completed by the solar system.
As we are familiar with this, the solar system produces direct current for converting direct current in the alternating current we use converters.
Solar panels are the primary devices using solar energy. It consists of solar cells which are made up of silicon. (it is an intrinsic semiconductor consisting of electron holes).
Many appliances work on solar energy some of them are given below:
Thermoelectric refrigeration:
As the demand for refrigerators increases day by day everyone wants a refrigerator in their house and using more refrigerators the level of chlorofluorocarbon increases day by day and it is becoming the main reason for the depletion of in ozone layer so stop this depletion we are making thermo
regulator refrigerator which will use sunlight to cool the refrigerator it can be operated by a 12-volt battery and is fully based on energy, it can work on Direct current our scientists working day and night on this project and it will available very soon.
Recently a new program has been started by us named, home energy management system it mainly for setting the home appliances and their voltage use by which we reduce the use of electricity in this system we use more and solar energy,
we set appliances in the home according to need, then we set a battery according to the voltage used by it for it we set up a small grid system on the rooftop of the home that will help a lot in gaining electricity for home use.
Solar fuel cell and hybrid energy system:
In the 4th conference of electrical information and communication technology which is held in 2019.
It mainly works on reducing burning issues of reliable and uninterruptible supply of energy, the main aim of hybrid energy is to maintain the uninterruptible supply of electricity, to meet the residential demand of load and electricity we set up PV array of a minimum of 14 panels
we can also install on our rooftop to complete the demand and it a pollution free and free, renewable and continuous source of energy.to provide backup we proposed a 2944ah battery is designed which will provide 24v current and 41a current for the solar array as well as for the fuel cell.
One is a good appliance of
solar energy which is used by us nowadays called a solar cooker
Solar cooker:
It is a type of solar device that Uses solar energy for cooking food, it comes to know about this in 1767 by swiss geologists. it is made up of a wooden box or insulated box which is painted black inside and also has a glass cover which is made up of toughened glass which is fitted in aluminum frame, a mirror reflector by which sun rays get collected at a small place (solar cooker) by get more heat and it helps in making the food generally we needed 65-degree
centigrade temperature for baking and 400degree centigrade temperature for grilling and we can get daily on a sunny day solar cookers can help in making food for thousands of people free of cost, it is the best option to use the energy to cook the food in large amount but it has certain limitations,
it is a long process and we can cook food only in the day time because sunlight available in day time only .it also reduces the carbon traces. After all, it doesn't use any source of carbon in cooking.
Solar cooking might be affected by solar winds because the temperature is down due to heavy winds.
We might also need to learn special techniques for cooking special food items because it takes time.
There are three designs of solar cookers:
1. Flat plate box type solar cooker with or
without reflector:
It is the most simple type of cooker, with maximum no-load temperature with a single glass reaching up to 160 degrees centigrade. The maximum temperature can reach up to 250 degrees centigrade. it has multiple reflectors mounted on the oven body and it reflects the radiation in multiple directions which helps in collecting the radiation fastly.
2. Multi-reflector types solar oven
This solar cooker has dimensions of 670mm to 670mm and has a collector area of 0.264m .it consists of the outer and inner box, double glazing, an absorber plate that is painted black which helps absorb the light, and foil reflectors ( insulator)maximum temperature reaches up to 102-degree centigrade. the temperature rises by 5.0-degree centigrade per 15min.
Parabolic solar cooker:
It is parabolic in shape and it consists of a parabolic-shaped metal plate and a small box connected to it the parabolic plate helps in collecting the heat in a small area with high intensity by which it can reach up to the
350-degree centigrade which is necessary for grilling and frying, this cooker gained high temperature in comparison to other cookers. The amount of food cooked if it is within diameter then it will cook easily and quickly.
- It also requires time-to-time reorientation every fifteen minutes, which can be done by mechanical apparatus.
- It requires more space for settling and cooking in comparison to other cookers.
- Solar energy is the fair form that will help us consume less electric and nuclear energy.
- Solar cooking is an appropriate and inexpansible and reliable way of cooking.
- Recent theft in South Africa shows the different benefits of solar cookers it saved a lot of fuel
- and increased energy security for households using commercial fuel.
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