solar thermal Archive

Solar Power VS Grid Power And Which Is Best

When considering solar power vs grid power, the first thing to think about is the qualities of each one. The latter transfers energy through a grid-like system which can go to several places all at once. The former is the use of sunlight being used as energy by being absorbed into a panel mechanism. It can be used at once or stored to be used later.

The differences between the two energy sources should definitely be weighed. Solar power has the advantage of being environmentally friendly. There is little worry needed for the impact using a lot of it will cause, so those concerned would need not worry so much.

Solar energy can often be meagre and unpredictable, which might make it unsuitable for many. However, it is grid work that can be much worse for the environment, and those who want to take that into consideration may want to use it in moderation at the most.

However, grid generated electricity can be preferable since it supplies a ready, reliable supply of power. The energy gained from the grid is automatic, and you do not have to make sure that it is being collected like you do with solar power.

As a renewable source, solar energy has endless use for as long as it can absorb sunlight. No fossil fuels or finite substances are being consumed, here, it is something that will never run out being used to generate power. For many, this is part of its appeal, particularly as it contributes to how environmentally friendly it is. It does not work at night, of course, and so for those who are awake in the small hours of the morning, it may not be the best idea to rely on something that can run out.

It is possible to use it at night, though, as it can be conserved during the day. This means leaving the panels in a place where it can pick up sun rays with its surfaces and then store them for later use. It is also possible to find devices that can operate by using solar energy and some of these will store power during daylight hours.

Weather also influences how successful solar power will be, as a sunny day might be more advantageous that a day that is predominantly cloud, for instance. Of course, this needs to be thought about. Power grids need a lot of space, and this can mean extra strain on the nearby environment, especially since many traits of the grid are visible on the landscape, and this makes the view a little less pleasant for many.

However, this is such a common form of electricity generation that physical signs such as pylons are easily ignored by most as they are so common. Grids cover a lot of space in a positive way, also, as one grid can be used to supply many places with energy. The downside to this is that if the grid shuts down or stops working for any reason, everywhere covered by it will no longer receive electricity.

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Clamor For Solar Is A Emerging Construction Market Event

Demand for solar is a emerging construction market phenomena. The factors that have affected this trend include decreases costs in materials, green solution popularity, and government incentives. The training and availability of knowledge is also much more readily available now than it was twenty years ago. Government regulations have been developed and put in place making the installation of these systems standardized by local and state coding requirements.

Photovoltaic cells (PV) are most commonly found in solar panels on top of homes. The technology causes the sun’s rays to be directly converted into electricity. Through time, the cells have been improved in function and production, making them available for most projects at a much lower cost.

Over the last twenty years, the demand for this type of energy has grown by 30 percent per year. The growth potential does not seem to be slowing, causing an increase in production to keep up with the demands. Builders no longer depend on custom orders, but are able to find standard products available most places.

The market has grown due to decreasing costs. The custom order of each product meant that the panels were much more expensive and there was no standard for installation. This also caused havoc in building homes because the panels had to meet the specifications and arrive on time to keep from slowing the project. Training was not readily available either, which cause the need for more expensive labor with specialized training. All of this has been reversed causing lower prices across the board.

Green energy solutions have exploded in popularity. As the world has shifted focus to renewable energy sources, the home has been included. The popularity is fueling all kinds of development and demand for solutions that can work on or off the electric grid. This popularity is growing through responsible citizen programs, government incentives, and higher traditional energy costs.

Energy costs are increasing due to many factors. These include reduced subsidies and more availability of alternative programs. The higher costs have put pressure on people to find sources that can be harnessed without having to rely solely on traditional power companies. In many cases, the excess electricity can be sold to the power plant, which gives citizens a revenue source.

Incentive programs provided by national, state, and local governments also push for renewable energy. The installation costs are often subsidized through tax rebates for homes that include the panels in their energy plans. The consumer and builder are both able to benefit from these incentives. The shift by governments is happening on a global scale with markets emerging everywhere.

Traditional energy costs continue to rise making solar a emerging construction market. The popularity of green energy solutions, cost savings, and declining production costs are also helping to increase the demand. Twenty years of increasing demand has pushed manufacturing costs much lower as well. Though many look at it as being more responsible, the fact is that the costs associated with installation have been reduced through government subsidies that make it a much more attractive product to be included with building a home.

Solar Contractor Affiliate Program Take Part In The Green Revolution

An increasing number of new home builders and retrofitters are using solar construction. The addition of solar energy to power home utilities saves costs and supports environmental issues.

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Guide About The Importance Of Solar Panel Efficiency

Solar panel efficiency is a percentage of the solar energy that is converted into electrical power by a module. In other words, it is the rate at which a panel can utilize the amount of energy that it receives from the sun by transforming it into voltage.

What is available today are natural sunlight units that are capable of converting between 6% and 20% of the total solar energy that they are exposed to. A module that has an efficiency level of 9% is expected to yield 9 parts for every 100 that goes through the photovoltaic cells for example.

However, that is usually not the end of the story. Those modules that have higher conversion ratios are more expensive than those with lower ones. Sometimes the difference in price can be so much that the ones that have lower ratios become more economical when you calculate the cost per watt produced.

It is difficult for the manufacturers to close the gap the reason being that the cost of manufacturing solar-grade cells is high. Crystalline silicone has a lot of photovoltaic potential and it is often used but since it is expensive some manufacturers cut thin slices of it to make thin-filmed modules regardless of the fact that it reduces efficiency.

Such a sheet of thinly assembled cells can be widened to expose a larger surface area to the sun and harness more energy and counter the energy efficiency problem. However, this has a disadvantage because space is a limited resource. Where every inch counts on the roof one may opt to buy the more compact alternatives regardless of the cost especially if one really needs the power.

Other times, the question may not be limitation in space but practicability. If one lives in a very cold and cloudy place one may consider installing highly efficient solar units to maximize energy conversion. If other power sources are accessible, one should compare the cost per watt and assess the period which shall elapse before the modules cover their own cost.

Where one lives in places not covered by the power grid and there is no hope of getting such a connection in the near future, it makes a lot of sense to install modules with a high energy conversion ratio. This in the end will turn out to be economical since the cost per watt shall be stretched over a long period of time becoming negligible as is the case with modern solar units that last for 20 to 30 years.

However, the question still remains of how to easily and affordably produce solar-standard semiconductors with energy conversion rates of 80% or more. Scientists believe that nanotechnology is the answer and some prototypes are working to some degree in laboratories. Nanotechnology is also dealing with the loss of electrical power that has always occurred in the transfer and conversion of the captured energy from DC to AC by use of micro-inverters.

A lot of research is being carried out in facilities all over the world to produce the technology that that will solve these problems. Strides are being made everyday which if successful and commercialized they shall put sunlight energy at par with other energy options such as nuclear as far as output and cost per watt is concerned.

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Solar Affordability And Incentives Have Never Been As Attractive As Now

The price of fossil fuels like coal, oil and gas continues to increase. As a result, the financial incentive to switch solar energy grows stronger. Additionally, there are environmental advantages favoring a switching to non-carbon polluting energy sources like solar. Governments support the trend. They have introduced policies to improve solar affordability and incentives to encourage homeowners and business leaders to go solar.

Both national and state governments extend incentives. The range of national and state government incentives is very large. In the USA, they include personal tax exemptions, corporate tax exemptions, sales tax exemptions for renewable investments, property tax exemptions, buy-down programs, loan programs and grants as well as industrial recruitment incentives.

A specific case study may be helpful for readers. In Florida, a homeowner installing fifty or sixty thousand dollars worth of energy product can expect to receive tax credits and rebates valued at over fifteen thousand dollars. The precise amount will depend on the particular products installed. Solar water heaters, a solar pool heaters and solar power (photovoltaic) systems attract particularly strong incentives.

A specific case example may be helpful. A Floridian homeowner that installs around approved solar energy products valued fifty or sixty thousand dollars can expect to receive government-funded incentives totaling more than fifteen thousand dollars. The exact amount depends on the specific products purchased. Federal government provides tax credits for purchase of solar electricity (photovoltaic) systems plus water heaters. Several states, Florida being one, provides tax credits rebates for purchase of solar water heaters plus pool heaters. Policies vary across states.

Several mortgage and general finance companies offer so-called green loans at interest rates subsidized by government to support the purchase of approved solar products. Fannie Mae offers green mortgage loans where the purchase cost of approved energy product purchases is added to the home mortgage loan.

Switching to solar products can be a big boost for the environment. For example, installing a solar hot water can decrease carbon emissions of the average sized household by about 1 ton each year, (the actual figure will vary depending on the fuel source of the existing heater). This is equivalent to the carbon emitted by a petrol car driving 10, 000 miles.

In summary, homes and businesses are increasingly making the switch to solar energy products. Solar affordability and incentives offered by governments help the transition. Solar hot water systems are popular because they are relatively simple to install. Solar hot water can supply about 90 percent of the hot water needs of a typical family, the remaining 10 percent being fueled by an alternative like grid electricity.

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A Need For New Technology Results In, Solar Homes Sell Faster And For More, The Choices

A study performed in 2010 indicated that solar homes sell faster and for more than the standard wood and plaster or brick homes. Societies focus on energy efficiency and environmental concerns has increased the use of this technology. This technology is widely used outside of the United States. This is due to the fact that this form of energy creation is cheaper than oil in other countries. Making the availability of this option from a variety of builders greater than in the United States.

The cost associated with purchasing a home that has this energy source available is balanced out by the savings generated by its use. The benefits associated with the use of this energy source include, increased appreciation of your home and reduced energy cost. An increased number of builders are choosing to offer this option to their home buyers.

Some homes come built with the technology, while others can be retrofitted to use this technique. Research has shown that homes are purchased at a greater rate if the technology is already included on the home.

Panels generate energy through the sun that runs the various appliances in your home. Homes that already have this system in place have the sun collectors installed on their roofs prior to purchase. The panels on the roof are then wired into the home and connected to an inverter. This is what then brings the energy into your home.

Industry has chosen to use another form of solar power. A system of mirrors and lens are placed around the buildings in order to gather the suns rays. The decision of industry to use this form is due to the fact that this set up collects a larger amount of energy that can then be stored for later use. If you live on a large plot of land that does not receive a lot of sunlight due to clouds, this option is available to you.

There are things to consider when deciding if you should install this product on your home. The use of solar panels lends to the need of access to the sun. If your home is located in a heavily wooded area, that blocks your roof from access to the sun, you may not be a candidate for these panels. The direction in which your roof faces is another point to consider. It has been found that south facing roofs provide the most benefit. You also need to be knowledgeable about the amount of energy you need in order to continue to function at the same level on a daily basis. If you use a significant amount of energy in your current set up, you will need to install a larger system in order to remain at the same level of functionality.

With increasing heating oil prices, more and more new home buyers are choosing this technology. The cost benefit is the biggest motivator for these purchases followed by the benefit to the environment. It has been stated that if a larger number of builders offer this technology to their consumers, the rate of increase in purchasing will mirror this change.

Since this technology has been proven work, more people will decide that they want to use this to generate power for their homes. The suns power is an exhaustible source to heat our homes and businesses. The availability of this product will increase as heating oil prices continue to increase. Creating a situation that will decrease the cost associated to produce products associated with the use of the suns power, as the demand increases for this source.

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It’s a well-known fact that solar homes sell for more. Gain insight into the reasons why solar homes sell faster and for more now in our guide to the benefits of solar energy.

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Solar Energy Is Free Energy For Our Use

Our planet receives about 174 petawatts of heat radiation from the sun. Solar energy is free energy we can use. About 30% bounces back to space while clouds, land and bodies of water absorb the remaining radiation. This totals to about 3,850,000 exajoules of sun energy absorbed by Earths atmosphere annually.

Ever since the ancient times, the heat that comes from the sun has been very useful to people. The solar energy is a free energy for mankind. Through this natural source, we save from using fuel and other means of power source that cost too much.

The heat production is double the amount compared to oil, natural gas and coal produced for a very long time. Due to this benefit, sun power is used nowadays through our modern technologies. Some of these sun powered applications include water heating, heating and cooling architectures, electricity production and satellites powered by heat cells.

Recently a lot of buildings are designed with the utilization of passive sun heating. The design usually includes huge windows created from materials that retains heat. The place of storage for the collected sun heat is in the walls and the floors. These continually release heat when it is cold especially when it is nighttime. With this development, the owners can now put aside some money for other uses.

Power plants are also taking advantage of sun power. Before they use fossil fuels but now they use power systems from sun heat. These include the parabolic-through, powered tower and dish.

With the use of tilted curved mirrors, parabolic-through collect energy from the sun. Pipes with oil are being focused on with light and heat. The oil heats the water used in generators. The generators in turn produce electricity. Mirrors are also used to collect light for the dish system and power tower system in order to generate electricity.

Heat coming from the collector may also be used to cool a building. Like an air conditioner, cooling systems use sun heat as a source of power. Evaporative coolers also can make use of the sun for its power source.

Water heating has also been a famous use of sun power. Glass panels in roofs are used to heat water. Through this, gas or electricity will be saved. Pipes in the panel contain water. Water is propelled from the bottom which helps hot water to be pumped from the top.

And unknown to most of us, the satellites that orbit the earth utilize cells as its source of power. These satellites are important for our usage of TV, telephones, internet and different types of navigation system. This goes to show that we are using heat from sun as a free source of power.

We have been using solar energy is free energy ever since. We use it to dry clothes. Some even use it to dry food by natural means. However, in the past only a few amount of this vast resource is being used. Nevertheless, with the development of technologies, we are now able to harness this heat for better usage and still it is for free.

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Hints On The Importance Of Solar Panel Efficiency

Solar panel efficiency is a percentage of the solar energy that is converted into electrical power by a module. In other words, it is the rate at which a panel can utilize the amount of energy that it receives from the sun by transforming it into voltage.

What is available today are natural sunlight units that are capable of converting between 6% and 20% of the total solar energy that they are exposed to. A module that has an efficiency level of 9% is expected to yield 9 parts for every 100 that goes through the photovoltaic cells for example.

Incidentally, the choice between the highest or the lowest energy conversion ratio is not that simple. The cost of those modules that are more productive is always higher than those with lower conversion rates. The cheap inefficient ones however may have the benefit of having a lower cost per watt as compared to the more efficient ones.

It is difficult for the manufacturers to close the gap the reason being that the cost of manufacturing solar-grade cells is high. Crystalline silicone has a lot of photovoltaic potential and it is often used but since it is expensive some manufacturers cut thin slices of it to make thin-filmed modules regardless of the fact that it reduces efficiency.

The thin-celled units can be produced in modules having a larger surface area to maximize energy input which is okay to those who have such spaces to spare. However, those who are pressed for space and still need solar energy are faced with the dilemma of buying cheap, inefficient and bulky modules or purchasing expensive but compact and efficient kits.

In other scenarios the headache is not space nor purchase price but functionality. In places where the sun shines down throughout the year one may make do with the cheaper versions but this may not suffice where it snows heavily. If an area is covered by power lines one might want to calculate the cost per watt if they chose to go solar so as to determine what is worth buying and after how long they are going to recover their cost.

Where one lives in places not covered by the power grid and there is no hope of getting such a connection in the near future, it makes a lot of sense to install modules with a high energy conversion ratio. This in the end will turn out to be economical since the cost per watt shall be stretched over a long period of time becoming negligible as is the case with modern solar units that last for 20 to 30 years.

For the time being however the problem still persists of how to make cheap semiconductors that can be applied in solar technology with efficiencies of around 80%. Experiments are being conducted using nanotechnology which many believe will provide those answers. Other problem areas such as current conversion and transfer are also being handled using nanotechnology. Micro-inverters have been developed for example that convert DC to AC right at the panel.

Much is being done but a lot is needed from science to provide a way that will transform solar energy to a power source that can compete adequately with options such as nuclear. Innovations are coming up and scientists claim that it is possible to obtain cost parity in the near future.

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A Compilation Of Items And Models Found In Units That Offer Solar Panel Efficiency

Our planet receives about 174 petawatts of heat radiation from the sun. Solar energy is free energy we can use. About 30% bounces back to space while clouds, land and bodies of water absorb the remaining radiation. This totals to about 3,850,000 exajoules of sun energy absorbed by Earths atmosphere annually.

The power that comes from the heat of the sun is very useful to people since the olden times. It does not cause any pollution and it does not require any fuel in order to be utilized. This solar energy is free energy.

Compared to natural gas, coal and oik that takes a long time to be harvested in huge amount, this power has no shortage of supply. With this advantage, modern solar applications are being developed to harness the heat. Some of theses solar applications that are used nowadays include water heating, heating and cooling architectures, electricity production and those used for industrial purposes.

Recently a lot of buildings are designed with the utilization of passive sun heating. The design usually includes huge windows created from materials that retains heat. The place of storage for the collected sun heat is in the walls and the floors. These continually release heat when it is cold especially when it is nighttime. With this development, the owners can now put aside some money for other uses.

Meanwhile, power plants that use fossil fuels before are now taking advantage of this heat as well. They use sun power systems which includes parabolic-through, power tower and dish.

With the use of tilted curved mirrors, parabolic-through collect energy from the sun. Pipes with oil are being focused on with light and heat. The oil heats the water used in generators. The generators in turn produce electricity. Mirrors are also used to collect light for the dish system and power tower system in order to generate electricity.

Heat coming from the collector may also be used to cool a building. Like an air conditioner, cooling systems use sun heat as a source of power. Evaporative coolers also can make use of the sun for its power source.

Water heating has also been a famous use of sun power. Glass panels in roofs are used to heat water. Through this, gas or electricity will be saved. Pipes in the panel contain water. Water is propelled from the bottom which helps hot water to be pumped from the top.

And unknown to most of us, the satellites that orbit the earth utilize cells as its source of power. These satellites are important for our usage of TV, telephones, internet and different types of navigation system. This goes to show that we are using heat from sun as a free source of power.

We have been using solar energy is free energy ever since. We use it to dry clothes. Some even use it to dry food by natural means. However, in the past only a few amount of this vast resource is being used. Nevertheless, with the development of technologies, we are now able to harness this heat for better usage and still it is for free.

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Solar Affordability And Incentives Have Never Been More Positive

The price of fossil fuels like coal, oil and gas continues to increase. As a result, the financial incentive to switch solar energy grows stronger. Additionally, there are environmental advantages favoring a switching to non-carbon polluting energy sources like solar. Governments support the trend. They have introduced policies to improve solar affordability and incentives to encourage homeowners and business leaders to go solar.

Both national and state governments extend incentives. The range of incentives is very large. In the USA, the federal 2005 Energy Bill was a landmark piece of legislation that provides significant benefits for people installing solar systems. It established a 30 percent residential energy credit for solar for two years capped at two thousand dollars. At the regional level, sun states like California, Texas and Florida are leaders in offering incentives.

At the federal level, the 2005 Energy Bill was a benchmark law that introduced significant incentives. It introduced a residential 30 percent energy credit for selected solar products for two years capped at a maximum of two thousand dollars. At the regional level, sunbelt states like Texas, California and Florida are among the leaders in offering incentives.

The federal government offers tax incentives for the purchase of solar photovoltaic systems that generate electricity and solar water heaters. At the state level, Florida provides rebates on the purchase of solar water heaters and pool heaters. Arrangements vary from state to state.

Subsidized finance is also provided. Green loans at government subsidized rates are available to support purchase of solar products. Fannie Mae allows home owners to roll-up the purchase price into their home mortgage loan. This allows the homeowner to finance the purchase at a home mortgage interest rate rather than a higher interest rate applying, for example, to a personal loan.

Switching to solar products can be a big boost for the environment. For example, installing a solar hot water can decrease carbon emissions of the average sized household by about 1 ton each year, (the actual figure will vary depending on the fuel source of the existing heater). This is equivalent to the carbon emitted by a petrol car driving 10, 000 miles.

In summary, homes and businesses are increasingly making the switch to solar energy products. Solar affordability and incentives offered by governments help the transition. Solar hot water systems are popular because they are relatively simple to install. Solar hot water can supply about 90 percent of the hot water needs of a typical family, the remaining 10 percent being fueled by an alternative like grid electricity.

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Solar Energy And Heat

Solar energy and heat

Making use of solar heating systems means knowing of several processes that make solar heat out of solar energy. But all the average person needs to learn from this is how they can benefit from the solar home heating.

About the Collectors

A solar energy collector gets the radiant energy from the sun to be converted into heat. A solar collector transforms solar energy into heat by taking advantage of the greenhouse effect. The solar energy will go through a layer of glazed glass, and then be absorbed by the material underneath. The solar energy will excite the molecules in the material beneath, leading to heat. The glass glazing will keep the heat from escaping, and will capture the heat effectively. As soon as the heat is captured, people can put the energy into good use.

Basic Heat Principles

Heat is described as a form of energy that is related to the movement of molecules. Once the electromagnetic waves that emanate from the sun hit an object, these will excite the molecules of the object, triggering movement. The movement of the molecules is then referred to as heat. Heat is constantly moving from high to low temperatures until the temperature becomes even. The process is known as heat transfer.

If 2 objects are set right next to each other and each were at different temperatures, the cooler object would warm up while the warmer object cooled down. This an example of heat transfer and its proportional to the differences in temperatures. The more the difference in heat, the faster heat transfer takes place.

Heat Movement Assessment

The three types of heat transfer or movement is conduction, convection and radiation. Conduction is simply where one object touches another and the heat is passed from high to low. Convection heat transfer is when a flowing medium such as water or air transfers heat. While radiation involves direct transfer of heat by electromagnetic waves.

Choosing which application

Knowing the various types of heat transfer will help you choose the ideal application that will ultimately become beneficial for your home or office. Make sure that you also get all the materials needed for your solar heating system. You can stay comfortable even on long cold months by choosing the right type and knowing the devices and positioning that will guarantee you safe and effective results.

Want to find out more about solar thermal heating? Then visit Janet Mcintyre’s site on how to choose the best solar energy products for your needs.

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