Solar Power for Houses: Your Residential Solar Power System

Passive solar heating is a great way to provide much of your home’s heating for free. Almost every home gets some solar energy coming through the windows, but there is a vast difference between the average house and a home heated with passive solar energy.

Building a new house that is passively solar heated is not significantly more expensive than building a normal house. This makes passive solar the most cost-effective form of solar power for the new home. Every new home should be built using passive solar techniques because home heating and cooling needs can be reduced greatly – potentially to zero in certain circumstances.

All this sounds wonderful, but there is one caveat: you must find a good architect who understands passive solar design. Some architects do not understand how to do it properly and mistakes made during the building process may prove costly later.

Passive solar heating covers a wide range of strategies, including passive solar thermal hot water heaters such as the batch and thermosyphon, but it’s usually used to describe heating the house air and structure.

Direct Passive Solar Heating

The simplest form is direct passive solar heating. This involves big windows on the south side of the house. The sunlight falls onto a dark surface with a high heat storage capacity such as a masonry floor or wall painted a dark color. Water is sometimes used instead – this involves water contained in glass or transparent plastic. It has slightly different properties than solid walls, but the basic idea is the same. The wall or floor absorbs energy on sunny days, and releases it at night or on cloudy days when things get cooler.

Of course, you don’t want the house to overheat in the summer. This is generally avoided by building overhangs over the windows. In the winter the sun is at a low angle and comes in the window. In the summer, especially near midday, the sun strikes the overhang and doesn’t come into the room. This leaves the room much cooler.

Trombe Walls (Indirect Gain) and Solar Spaces (Isolated Gain)

There are two other major passive solar heating strategies, Indirect Gain and Isolated Gain. The most common Indirect Gain method is the Trombe Wall, and the most common Isolated Gain method is the solar space.

Trombe walls involve a thick wall painted a dark colour. An inch or so in front of it is glass. Sunlight enters through the glass and is absorbed as heat by the wall. The glass helps prevent heat loss, and wall slowly releases the heat into the rest of the house. Again, a Trombe wall is placed on the south side of the house.

A solar space is basically a glassed-in space on the south side of the house. They are also sometimes known as solar rooms or solaria. Solar spaces can act as greenhouses, and they are sometimes referred to as greenhouses. However, they are not the same as greenhouses designed to grow plants.

The glass is vertical, and there usually isn’t glass overhead. This is so that the glass can be shaded in the summer to avoid overheating. It also means the plants that grow there have less light than they would in a true greenhouse, although more than they would in your house. Since they are attached to the house, you may not want to grow large numbers of plants in it if you’re allergic to mildew. However, if you’ve always wanted a greenhouse,why not use it to grow plants?

These three types of passive solar heating are the most commonly used. While the systems describes here are simple and this overview is simple, there’s a lot more to passive solar design when you really start looking deeply into the subject.

Sources:

Arizona Solar Center

US department of energy: energy efficiency and renewable energy. Passive solar home design.

Increasing energy conservation and energy efficiency are the most cost effective ways to reduce the amount of money you pay for energy.  Before you invest in alternative energy sources, you should check that your house uses as little energy as possible while still allowing you the lifestyle you want.   Of the two approaches, the simpler is energy conservation.

Energy conservation involves using less energy by doing things like turning off the lights when we’re not in the room.  There is no upfront cost to such actions, although they do typically require behavior changes.

Ways to reduce your power use through energy conservation

• Turn all lights out when you leave the room
• Set your computer to fall into hibernation mode when it is not in use
• Unplug appliances when not in use, or get a power bar and turn the power bar off at night
• Buy a timer for your home’s thermostat so that your home will be warm when you’re home and moving about and cooler at night and when you’re at work
• Turn your home’s thermostat down a couple of degrees Celsius and wear a sweater – presuming your home is not leaky enough that you’re wearing a sweater anyway and freezing cold besides
• Turn the TV off if you’re not watching it

Basically, if you aren’t using it, it shouldn’t be on.

Energy efficiency involves using appliances that can do the same amount of work with less energy.  It does not involve you changing your daily behaviour.  The classic example is replacing incandescent lighting with compact fluorescent, but it goes far beyond this.  The largest use of electricity in many homes is heating.  By insulating the house, the amount of energy required to heat the house is reduced.

Cheap ways to reduce your power use through energy efficiency

• Replace incandescent bulbs with compact fluorescents
• Insulate your hot water heater
• Insulate your hot water pipes
• put plastic film over windows during winter

More expensive, but very useful

• Buy an energy-efficient refrigerator if your current fridge is more than 10 years old
• Insulate your ceilings, walls and floors
• Replace single-glazed windows with double or triple glazed windows

Of course, if you really want to increase energy efficiency there are a variety of methods for passive solar heating, but that is beyond the scope of this article.

When you install that new appliance…

I once lived in an apartment where the landlord had replaced all the windows with new windows that were supposed to be much better insulated and lose less heat.   However, he had installed them badly and there were gaps between the windows and the frame.  One of the gaps was so large you could see right through it to the outside.   Because of this, the house would not stay warm despite the new windows and the landlord complained about his energy bills to us.  Meanwhile, we complained that we were always cold.

This shows the importance of installing new energy efficient objects correctly.  If installed incorrectly, the object may well work badly if it works at all, and you may have done a lot of work and spent a lot of money for no energy savings.  So do it right the first time!

In the face of the current energy crisis, with virtually all of the traditional energy sources rapidly dwindling, there is an increasing interest in alternative energy sources. More and more sectors are realizing the bigger role that alternative energy will play in the coming years, and it is a trend that will likely continue for the foreseeable future. As you can imagine, this will result in plenty of job opportunities in alternative energy, particularly in the field of solar energy.

At present, thousands of new graduates from varying educational backgrounds are considering careers in the field renewable energy. These fresh graduates are ideally positioned to fill the needs of financiers, entrepreneurs, corporate leaders, provided they have the skills and capabilities required in the industry. And that is where the quandary lies.

While there is undoubtedly an increasing demand for experienced and qualified personnel in virtually every aspect of renewable energy, the demand greatly outweighs the supply. At the root of this wide demand and supply gap in the labor market, is the incessant lack of programs which train students careers in environmental jobs or green jobs. This void has begun to be addressed by a few educational institutes such as Boots on the Roof, a growing Solar Training institute in the heart of California, which is running a series of very successful solar training boot camps for students nationwide.

Interestingly enough, many of the professionals currently working in the renewable energy field began their education in other areas, even in fields that are totally unrelated. That being said, the best way to break into the solar energy industry is still by way of a thorough solar education as provided by traditional learning institutions, and Boots on the Roof is a good example to site here.

The younger generations in particular have taken advantage of courses offered by an increasing number of colleges and universities in sustainability and renewable energy.

In spite of these programs and similar others, solar companies are still dealing with under-staffed teams due to lack of skilled manpower. Some renewable energy organizations that are currently existent are now offering corporate solar training programs which are targeted towards applicants of different capability levels and interests. Some companies even offer solar training courses for military veterans who are looking for careers in the private sector.

You may also want to consider entry-level certificate program such as the ones offered by many technical colleges all over the country. These solar education courses typically consist of 24 hours of instruction, and will provide a basic entry point by which you can explore your opportunities in renewable energy.

While technical knowledge and background in solar courses is undoubtedly essential for those who are seeking careers in renewable energy, some basic business knowledge will come in handy as well.

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Solar Training, Solar Energy, Renewable Energy
Education-Boots on the Roof.

For additional information on solar training courses, please visit Solar Training Boot Camps at
Boots on the Roof.

Article Source: Populate.net

The renewable energy industry has grown dramatically in the past few years; everywhere you turn, you hear about solar power and solar panels, wind farms and biofuels. The solar industry, in particular, has become such a hot topic and so high in demand that there are some just waiting for the solar bubble to burst. Every dog has its day, everybody has their fifteen minutes of fame, and the solar industry’s fifteen minutes was up a long time ago.

Not true. Solar power took the stage and stayed on it, and the demand is only rising higher. What financial people, marketing and trend studies are finding out is that, while the demand for solar products is high, there’s a huge shortage of qualified people with solar training to install PV (photovoltaics) systems, as well as many other areas.

States such as Oregon, Colorado, Arizona and New Jersey have policies that make them good places to start up or grow solar businesses, among many other states. Solar integrators are looking at many new technologies, searching for better ways to harness solar energy.

PV technology, for instance, uses silicon to create energy when encountering light. PV systems use the light photons that cause heat, and most modules are made with silicone wafers, soldered together in rows. While many research and development programs are funded somewhat, most of it is driven by the private market. This opens up “green jobs” in research and development, as well as manufacturing and installation in local communities.

Over the past twenty-five years or so, solar electric power systems have garnered a huge popularity in the business and private sectors. Therefore, the local levels are also suffering a shortage of employees with solar training. With the demand for PV products rising, those in the construction business such as general contractors, electricians, roofers and the like will need to be able to meet that demand.

Businesses, especially, are taking energy audits and looking at ways to reduce energy costs. This is where those in the construction business can really benefit from solar training and certification, as well as learning “green” building.

Companies are becoming more interested in ways to save, from insulation, to lighting, to solar installation. If a general contractor takes an interest in solar training, knows how to measure energy usage and knows how to reduce it, that’s a general contractor who will be in higher demand than others.

Roofers and electricians can also benefit from solar training. Homeowners are starting to replace their old roofing tiles with solar PV arrays; a roofer who is also a qualified installer will be able to find more work. However, sometimes the solar arrays won’t work on a roof and must be installed on the ground. In this case, an electrician with solar training can find the perfect niche to work in.

As long as the upward trend continues in the solar industry; as long as people worry about the environment and global warming; as long as nations work together to make the world better, solar training will be a necessity in several walks of life.

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Solar Training, Solar Energy, Renewable Energy
Education-Boots on the Roof.

For additional information on solar training courses, please visit Solar Training Boot Camps at
Boots on the Roof.

Article Source: Populate.net