Recent questions tagged solar

Description : How to Make a Solar Oven

Last Answer : Conventional ovens, although reliable, are expensive and contribute heavily to your electric bill. Gas ranges, on the other hand, are slightly more convenient, although the price of gas has increased through the ... , with a solar oven, you're just a ray of sunshine away from another luscious meal.

Description : How does Solar Energy Work?

Last Answer : How does Solar Energy Work? The world is facing an energy crisis. Energy resources such as oil and coal not only continue to cost more, but when burned contribute to polluting the ... energy will be a viable economic alternative to fossil fuels for producing energy for homes and businesses.

Description : How to Build a Solar Oven

Last Answer : How to Build a Solar Oven Introduction What often comes to mind when you think of solar power? You may think of massive arrays of solar panels that are used to harness the energy from the sun. You could ... can use a stick, a rock or some other object to prop open the lid to the proper position.

Description : How to Build a Solar Furnace

Last Answer : How to Build a Solar Furnace How to Build a Solar Furnace Solar furnaces are actually made up of something known as silicon, the same substance that makes silica or sand. The funny part is that ... not rust like iron. So the entire structure of the furnace is built to last for several years.

Description : How Do Solar Yard Lights Work?

Last Answer : How Do Solar Yard Lights Work? Solar yard lights have become extremely popular over the last several years as more and more people switch from traditional yard lighting to solar. While traditional yard ... local and state governments who now use this technology for street and park lighting as well.

Description : SOLAR SYSTEM FACTS

Last Answer : There are tons of asteroids in our solar system. One of them, Asteroid 243 Ida, even has it's own moon. One of the moons of Saturn, called Mimas, is heavily cratered. This creates an odd appearance ... our solar system, the sun still accounts for 99.8 percent of the total mass of our solar system.

Description : Photocell and solar cell difference?

Last Answer : A photo cell is a light dependent resistor which decreases it resistance high intensity of light and is used to automatically control lights etc where as a solar cell solar or light energy into electrical energy.

Description : Why solar system is preferred now a days ? Justify your answer. 

Last Answer : Since availability of fossil fuels like coal are limited in future so there is more importance of solar power in the energy deficient because of following advantages of solar power Fuel is ... .  10. solar system technology are ideally suited to distributed applications ( Decentralized system)

Description : State the types of solar collector and explain any one. 

Last Answer : Types of solar collector:  1. Flat Plate type collectors :- a) Flat plate collectors (FPC) b). Evacuated Tubular collector (ETC)  2. Concentrating type collectors (focusing ... to north direction because there is more solar energy in this direction than the East-West arrangement.  

Description : Explain the characteristics of solar cell.  

Last Answer : Characteristics of solar cell : Explanation :- Solar cells produce direct current ( DC ) electricity and current times voltage equals power, so we can create solar cell I-V curves representing ... system so that it can operate as close to its optimal peak power point (MPP) as possible.

Description : With a neat diagram explain solar photovoltaic power plant. 

Last Answer : Diagram of solar photovoltaic power plant :  Explanation:  Solar power plant consists of following components:  1. Photovoltaic cell panel: Its function is to convert sunrays directly into DC ... .  5. Step-up transformer: It step-up input voltage to utilization voltage e.g. 230V

Last Answer : Diagram explain solar power tower : All concentrating solar thermal power (STP) basic elements: Concentrator Receiver Transport-storage (a portion of the thermal energy ... with alternator which converts mechanical power to electrical energy Exhaust steam is condensate in condenser

Last Answer : Because of following advantages concentrating type collector are used in solar power plant: -  1. Temperature: Temperature obtained is high because absorber area is less and collector/reflector area ... results: As tracking system is used better results are obtain than flat type collector.

Description : Classify the solar collectors and compare them. 

Last Answer : Classification of solar collectors :-  1. There are two main types of Flat Plate type collectors :- a) Flat plate collectors (FPC) b). Evacuated Tubular collector (ETC)  2. Concentrating ... directly from water Can be used to generate electricity with the help of steam turbine

Description : Explain the importance of solar power in the energy deficient India.

Last Answer : Mainly electricity generated in India is from -  Hydro power plant  Thermal power plant  Nuclear power plant  BUT,  To construct new Hydro power plant following are problem :- 1. There is ... start) 10. It saves the fossil fuel (coal, diesel, oil etc.) which are limited available.

Description : Define : i) Diffuse radiation ii) Beam radiation ii) Insolation iv) Solar constant

Last Answer : i) Diffuse radiation: It is the solar radiation which is scattered by the particles in earth's atmosphere and this radiation does not have any unique direction.  ii) Beam radiation: Solar radiation ... from the sun.  OR  It is the average radiation received outside the earth's atmosphere

Description : Explain with schematic diagram direct distribution of solar energy.

Last Answer : Explain with schematic diagram direct distribution of solar energy: Solar energy reaching earth's surface consists of two components: i) Direct solar energy, ii) Diffused solar energy. Direct solar energy ... radiation. It is very intense radiation and it can produce sun burns and shadows.

Description : State the principle of solar cell. What is necessity of series and parallel connection of solar cells.

Last Answer : Principle of solar cell:-  Working:- Solar cell operates on principle of Photo-voltaic effect Solar cell works in following steps:  The solar cell is composed of a P-type ... of Voltage & Current rating it is necessity of connecting series and parallel connection of solar cells.

Description : Define the term solar constant.

Last Answer : Solar energy arrived atmosphere at a constant rate of 1350W/M²

Description : Reflector mirrors employed for exploiting solar energy are called the  (1) Mantle (2) Heliostats (3) Diffusers (4) Ponds

Last Answer : Reflector mirrors employed for exploiting solar energy are called the Heliostats

Description : A solar pond is a combination of :  (A) Solar energy storage and heat collection  (B) Solar energy collection and heat storage  (C) Solar energy collection and energy storage  (D) All the above

Last Answer : A solar pond is a combination of : Solar energy collection and heat storage

Last Answer : Igbt alone cant convert dc to ac. igbt half bridge or full bridge or three phase topology could be used to convert dc to ac. also igbt gates should be driven by microcontroller or pwm/spwm gate driving signals ... e4(-) and g4 c2e1 and c4e3 pins are AC output pins. its name is igbt inverter.

Description : What are the advantages and disadvantages of solar energy?

Last Answer : Free of costRenewable energyInextable solar energyLow energy densityHigh capital costMaintenance cost highDepends on weatherNeed to direction tracking

Description : What are the disadvantages of using solar energy?

Last Answer : High installation costEnergy density is depend on weatherSo it is low Not suitable in all areasMaintenance cost high