To understand the characteristic of the solar system is to know the purpose for using solar energy. The first three are active solar systems, which use mechanical and electrical devices to convert the sun's heat to another form of usable energy most of them converted to electricity. Passive solar buildings are designed and oriented to collect, store, and distribute the heat energy from sunlight to maintain the comfort of the occupants without the use of moving parts or electronics which common found on top of residential housing roof that provide heat for the shower water
Crystalline silicon is well known as solar grade silicon it is the most prevalent bulk material for solar cell. The bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon or wafer. The concept of a p-n junction is entirely based on the cells. C-Si made of solar cells are made from wafers between 160 and 240 micrometers chunky, which make the first generation cell has high sustainable and it can demonstrate to collect the sun’s light very often. The commercially predominant PV technology, which includes materials such as polysilicon and monocrystalline silicon.
Antireflection coating became an integral part of designing different types of solar cells. Reflections can be minimized in certain wavelengths thus result in higher overall efficiency. In order to understand the working principle behind antireflection coatings, we must first understand the nature of light and it’s interaction with other materials. It is of utmost importance for solar cell designers and researchers to understand both the particle and wave nature of light in order to design a high efficiency solar cell. The Sun’s energy which radiates into the Earth’s surface and harnessed by solar cells are composed of broad spectrum of electro-magnetic (EM) waves combined together which form visible light that have different power densities depending on the wavelength of propagation.
This helps to reduce the strain on the national grid. The operational mechanism is similar to that of a current electric air-conditioning unit but the only difference is that its electric current is generated via the sun’s energy. Main Question: How will I beat the heat of Summer due to global warming when Eskom continues with its load shedding? Part A: Investigative Question: How long will it take for a room with fixed volume to reach its minimum temperature using my portable air conditioning unit? Part B: Investigative Question: How the changes in mass of ice will influence the time for which the portable air-conditioning unit will produce cool air in a room with fixed volume?
Introduction In a world of increasing energy costs accompanied by a scarcity in energy sources, the need for energy conservation is currently a major challenge. For this purpose, it became trending to use Thermal Insulation in building. The need for this technique is essential specifically in hot climate countries to conserve the great amount of energy required for cooling and air conditioning purposes, while the same applies in cold climates where the need to prevent heat loss and conserve the energy required for heating prevailing. It is also an efficient way to increase the building life and appreciate its value. What is Thermal Insulation?
The amount of radiation hitting the earth in three days is the same amount stored in all fossil energy. Solar energy is a free resource that produces new ideas. The first use of solar power was to produce heat. A scientist Horace built the first thermal solar collector in 1767, which was later used to heat water and cook food. The first commercial patent for a solar water heater went to Clarence Kemp of the US in 1891.
According to (Wikipedia.org 2014) the sun is the most important source of renewable energy available at this time. The sun provides energy for all living creatures on earth. For example, plants absorbs solar radiation from sunlight and converts it into stored energy for growth and development. This process is called photosynthesis.Solar energy is a light and heat from the sunlight collected and converted using a wide variety of technologies such as artificial photosynthesis, solar thermal electricity, solar architecture, solar heating device and solar photovoltaics. Scientists and engineers today works extremely hard to develop ways to utilize solar radiation or sunlight directly by converting it into useful heat or electricity.
The sun is a very valuable source 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.
In just 50 minutes, the Sun makes the same amount of the planet 's annual energy consumption . Solar Thermal power, uses the sun’s energy to make cheap thermal energy, which does not harm the environment, unlike fossil fuels . There are different methods to use solar energy. The first one provides heating and hot water to an average home by collecting energy from the sun through solar panels installed in the same building. The second method consists in using concentrated solar heat energy and big power utilities to indirectly make electricity.