Sunlight is the primary energy source for existence of life on earth. The light and heat energy from sun travels approximately 150 million kilometres to reach earth atmosphere. Total energy incident on earth atmosphere from sun consist of infrared and visible light with around 10 percent of ultra violet light. Solar constant calculated on the atmosphere accounts for about 1360 W/m2. The value reduces when reaching the land to 1000 W/m2 due to attenuation by earth’s atmosphere.
Chapter 1. Introduction to solar radiation 1.1 Introduction As sun is an important source of energy, it is useful to study solar radiations that are emitted by the sun. There are both positive and negative effects of the solar radiation. Sun’s solar radiation spectrum resembles to black body with a temperature of 5800K. As distance between sun and earth is large, only a part of radiation reaches the earth’s surface.
The earth receives about 4,000 trillion kWh amount of energy every day in the form of the electromagnetic radiations from the sun (Maheshwari, 2014). The use of solar energy is quite feasible in tropics, where at least six hours of sunshine received at every day at about 500-800W/m2 of average solar intensity radiation (Maheshwari, 2014). The total energy reaches to the earth surface per year is
1. INTRODUCTION Solar Furnace is structures, which concentrate all the sunlight (solar radiation) fall on it to a point or a line to increase temperature. It contains mirror which act as collector or reflector, which are arrange in such a way that all the sunlight fall on it is concentrated at, focus the temperature at focus may reach up to 3500’c. This heat can be utilized to generate electricity, Melting of metal, Cooking of food Carry out many chemical reactions and used to heat any fuel.  1.1Type of Solar Furnace: Solar Furnace is of different type based on the collector design and its application 1.1.1Parabolic dish In Parabolic Dish the collector at a fix point concentrates solar furnace the solar light.
Here is a picture of a wind turbine. (Office of Energy Efficiency and Renewable Energy., n.d.) For each, describe two benefits. Solar Energy Benefits, The sun already produces enough energy to sustain mankind for a long time. "It is estimated that in one year, the amount of solar energy reaching the Earth is equal to twice the amount of energy that will ever be obtained from the Earth’s
ABSTRACT Sun is the ultimate source of all the energies in the universe, solar power is considered one of the better renewable platforms. The energy that the sun continuously irradiates on the earth is equal to 10000 times worldwide energetic requirements. Photovoltaic device is the proper term for a solar-electric cell that collects sunlight and converts it to electricity. The dominate technology in use in the photovoltaic world is phosphorous and boron (or aluminium) doped poly-crystalline silicon wafers approximately 0.3 mm thick. They convert solar energy to electricity at approximately 13 % efficiency.
Potential The amount of solar energy that is absorbed by the atmosphere is huge, about 3,850,000 exajoules (1 exajoule = 1018 joules) per year. The amount of solar energy that reaches the Earth’s crust differs very much. It is affected by place, time, weather, etc. During night time not much sunlight reaches Earth and cloud cover also blocks most sunlight. Capturing Sunlight There are two types of ways to capture sunlight.
The PV/Hydrogen system with KOH solution reaches a minimum efficiency of 1% at solar noon while it attains about 8% at both extremes. Excluding the relatively small periods of beginning and the end of the experiment, the efficiency of the system occupying both sea and Nile water gives a nearly constants efficiencies of 0.13 % and 0.005 % along the experimentation
The sun is a very valuable asset to the world today. We use it for heat, plants use it to grow, and energy such as solar power. Solar power is the conversion of sunlight into electricity. Solar power is the next alternative to all other sources of energy out there. Fossil fuels such as oil and gas are non-renewable, which means they are limited.
About 85% of the common populations of Saudi Arabia are Sunni Muslims; the main structure is Wahhabism (Peterson, 2003). Country’ population is 27 million, comprising 8.4 million foreign people. The atmosphere is for the most part extraordinarily extremely hot and dry; and dust storms and dust tempests are normal. Temperatures vary in day and night. From May to September, the most blazing time, daytime temperatures around 54°c (129°f) in the inside and are among the most astounding recorded anyplace on the world.