Tag Archive | "greenhouse effect"

Solar System A Growing Source Of Energy

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Global warming, energy crises and greenhouse effects are worldwide concerns. All countries are insistently pursuing other safe alternatives of energy sources. Solar system is on top priority list among other alternative sources of energy. Countries are investing extra money in the field of research for the development of a solar energy system.

Solar system produces 0.1 percent of electricity in U.S.A. It will increase up to 10 percent. It offers competitive cost than other sources of energy.

Competitive Costs

Some factors influence the costs of a solar system. The Size of a system, required energy and a location of installation, set price of a solar system. Average cost of an installed system roughly estimated about $36,000 for a home of 2500 square foot.  This estimated cost is about 4 Kwh at $9 per watt. This estimation is not accurate. It just provides an idea of the cost.

Determine Size Of Solar System

The size of a home does not determine the size and the consumption of a solar system. Just call a representative and ask him to calculate the size of a solar system for your home. He will call your utility power company and get your monthly or daily electric usage in kilowatt hours. This information is also available in the copies of electric bills.

Tax Credits And Rebates

High Costs of Electricity in USA dissatisfy thousands of utility consumers. They enjoyed tax credits and generous discounts. Credits and discounts are available for the installation of solar electric system for household and business venues. The State of California for instance offers 15% tax credit and $4000.00 (per kilowatt) as a cash rebate for the solar electric system.

Photovoltaic panels

New solar system generates free energy from the sun and runs TVs, refrigerators, pumps, computers and many other appliances. Photovoltaic panels produce power directly through sunlight. Photovoltaic panels use semiconductors made up of various components. These panels are first preference of residential solar system.

Solar Thermal Collectors

This is another way of trapping, absorbing and transferring heat from sunlight in the form of warm water or air.  Solar energy system has a long way to go. It moves in a right direction with better incentives.

Configuration Of Solar Electric System

The Solar Photovoltaic Array is a unit that collects the energy from a sun. It is on the top of a roof in a south direction. So it gets maximum exposure to the sun.

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How Is Global Warming Produced?

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The overall global climate change has finally convinced everyone that climate change is for real, has begun, and is mostly due to human activities.

greenhouse

According to experts, the effects of global warming are extremely hazardous and extensive. Most of the times, these consequences are only thought of as threats to polar bears, exotic wildlife, and beautiful glaciers. But it is important to understand that climate change threatens more than just the animals and natural landscapes. It can also cause harm to human health and pose serious problems.

In order to understand the effects of global warming, we must first understand how global warming works. We all know that sunshine warms the earth. But when the sun’s radiations enter the atmosphere, a part of the radiations are bounced back into space, and another portion is absorbed by clouds and water vapors, but the majority strikes the planet’s surface.

Major Gases Responsible For Global Warming

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The greenhouse effect is a natural process by which the earth keeps itself warm enough for the living organisms to survive. However, due to the human intervention, the level of these greenhouse gases has increased to such an extent that the greenhouse effect is become hazardous for human life.

gases

Greenhouse gases are heat trapping gases formed on earth through natural processes and human activities, which then enter the atmosphere. Here are some of the major gases responsible for the greenhouse effect.

1. Carbon dioxide (CO2)

Carbon dioxide is being emitted in the air constantly as every time you breathe, a tiny amount of CO2 enters the atmosphere. However, this is an extremely small amount as compared to the CO2 produced when wood and fossil fuels such as oil, natural gas, and coal are burnt. Many other industries also produce CO2 as a by product. Although plants get rid of the CO2 present in the air during photosynthesis. With the increase in the fossil fuel combustion and deforestation, atmospheric CO2 has increased greatly. Carbon dioxide is accountable for most of the global warming, and with the ongoing rate, atmospheric CO2 level can almost double as soon as in 2050.

Causes Of Global Warming

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There are many causes that lead to Global warming, with each of the reasons contributing more to the increasing intensity of the climate change that has affected our planet.

causes of global warming

The main cause of global warming is the increase rate of greenhouse gases present in the earth’s atmosphere. These gases cause the the greenhouse effect, which traps the heat present on the earth by reducing the level of solar rays that are able to escape from our atmosphere.

Although the greenhouse effect is extremely important to support life on earth, by keeping our atmosphere warm enough to support life, the addition of human activities contributing to the quantity of greenhouse gases has caused an artificial increase in the intensity of the greenhouse effect, which has made this great phenomena a bad effect. Thus greenhouse effect is not bad, it is the increase in the amount of greenhouse gases that are causing the harm.