Archive for April, 2008

Ozone Air-purifiers – Eliminate Unwanted Odors And Pollutants From The Air

Posted on April 14, 2008
By tech blogger in Uncategorized

Ozone air-purifiers are known for their effectiveness of reducing the odors in your room or surrounding spaces. The smells of contaminants like new carpets and acrolein, pet odors and tobacco smoke, bacteria smell and rotten odors can be specially removed through the help of ozone air-purifiers. Ozone is a highly reactive oxidant that aids in the destruction of certain bacteria, chemicals and other contaminants in the air. So the ozone air-purifiers can prove to be truly effective for cleaning the air in the surroundings.

The working of ozone air-purifiers is simple but unique. When ozone reacts with various substances or contaminants in the air, these contaminants are broken down into other materials that are also termed as pollutants. Ozone comprised of three oxygen molecules converts certain contaminants in the air to carbon dioxide, oxygen, water, formic acid and a variety of aldehydes. So the air gets easily purified when cleaned with ozone air-purifiers.

Types of ozone air-purifiers

Ozone air-purifiers are available in two versions: the direct ozone generators and the indirect ozone generators.

1. The direct ozone generators - usually work by producing ozone that filters out some chemicals in the air of the surrounding spaces. The ozone generators are highly effective for removing odors in the bars, reducing burnt smell completely during fire restoration jobs and in removing smells in other major odor issues.

2. The indirect ozone generators – these are part of the ionic air purification systems that produce and emit out negatively charged ions into the atmosphere causing the air-chemicals and particles to drop into the grounds and floor surfaces. You can clean off the dust and dirt particles once they are on the grounds, thereby purging the air completely.

But when you are using the ozone air-purifiers you should be quite careful. According to Environmental Protection Agency, ozone has been known for decreasing lung functions and body activities, aggravate asthma and other respiratory ailments, increase cough and chest pain, cause shortness of breath and inflame the lung tissue and increase the susceptibility to respiratory infections.

When you are using it, try to vacate the premises including pets, plant pots, art and other valuable items that are made of rubber. Seal the building and keep the generator running for few days so that all the pollutants, unwanted odors and contaminants gets ventilated. The human health institutions have recommended worldwide that a maximum of outdoor ozone exposure should be 50 to 80 ppb [parts per billion].

Advantages of using ozone air-purifiers

The ozone air-purifiers prove to be truly efficient for the following purposes:

-Protects you from pollutants, contaminants and unwanted microorganisms in the atmosphere.

-Reduces viruses and bacteria from the atmosphere thereby decreasing the spread of diseases like pneumonia, tuberculosis and other diseases.

-Can be installed almost anywhere in the homes because they are portable, lightweight and flexible.

A word of caution suggests that you should limit the use of ozone air-purifiers specially indoor to reduce any ill-effects on the inhabitants. The ozone air-purifiers can be truly effective for outdoor purposes. But for even regular outdoors, check out indirect ozone generators with a low tested emission rate to reduce all possible ill effects on common people.

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Types Of Scooters – Know The Importance Of Electric Scooters

Posted on April 13, 2008
By tech blogger in Uncategorized

The various types of scooters, hitherto, available in the market are widely accepted mode of transportation that offers smooth and effortless riding to both kids and adults. The scooters are one of the biggest means of transportation that usually move with super acceleration coupled with the capacities of reaching speeds of 20-25 mph and traveling distances up to 25 miles on a single charge. Being one of the fastest means of transportation, thus, traveling in different types of scooters can provide a lifetime experience to all specially the regular passengers, to say the least.

How do electric scooters work?

The electric scooters work with the aid of motors and batteries that make them easy for traveling. While a variety of switches control speed [on/off or variable], the bicycle hand brakes are installed on the handlebars to keep the electric scooters under control. The batteries are generally placed beneath the feet thereby easing travel further. The speed of these scooters often vary dramatically ranging from below 10 mph for inexpensive import scooters to over 30 mph for the highest-speed scooters.

Some of the electric scooters also have a motor-protected circuitry that enables the scooter to move ahead and gain speed even before the assist starts working. So when the throttle-switch is released, the unique design of the electric scooters allow the motor to coast or “freewheel” in a way most commonly seen in regular bikes. The electric scooters can be truly enjoyable as they have an easy acceleration that helps them to glide smoothly through heavy winds as well as climb hills smoothly.

Types of electric scooters

From amongst a dozen of electric scooters available in the market, the three most representative examples include
Zappy – this scooter can carry a rider 4-5 miles at just 10-12 mph speed limit.
Flyer – the Phat Flyer provides 5-8 mile range and 15 mph speed limit at the expense of portability.
Voloci – this looks and gives the feel of a moped. It includes special features like selectable performance models, quick-swap battery packs, keyed ignition for added security and state-of-charge indicators.

Advantages of electric scooters

Majority of the population usually remains fond of traveling on electric scooters because they somehow impart the feel of skiing smoothly on land. Whether it’s a terrain, a rough road with frequent potholes or a smooth road, the electric scooters have the capacity to glide effortlessly through the road. Instead of using them for long distance errands, they are specially useful if you are interested to opt for some quick and easy work. Traveling on the electric scooters can save your money and most efficiently protect the environment. Another significant factor that makes people choose electric scooters is convenience of parking them. You can park them easily at convenient parking spots and short cut by-lanes with minimum of inconveniences.

Travel on these electric scooters to enjoy a smooth, quick and easy ride anytime and anywhere.

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CCTV: You Are Being Watched, No Matter Where You Are

Posted on April 12, 2008
By tech blogger in Uncategorized

Closed circuit TV, CCTV, doesn’t require an introduction at all. The purpose of installing wired or wireless CCTV is fundamentally the one of surveillance and vigilance. These are bigger in size than the wearable spy cameras or hidden cameras and so leave that for the detectives for the moment. (Also what we are not considering now is the Chinese TV channel: CCTV.)

It is thanks to IRA, the Irish Republican Army, for having paved the way for developing the concept of CCTV, albeit in a tragic way. The Royal British Army, in response to the IRA bombings has experimented using CCTV for years, including outdoors, since 1970s through to 1990s. Although exact numbers can not known, an estimate tells us that there are much more than 400,000 surveillance cameras on London streets alone.

Is It Just Military Surveillance With CCTV?
CCTV is extensively being used in security system of industries, banks, super markets homes and all such places which are perceived as strategically and financially important. Commercial establishments using CCTV have increased manifolds in UK although it is not so common in US as it is perceived as a privacy threat. New York City has about 4000 CCTV installations and most of which are in shopping malls and other public places such as Liberty Statue, Lincoln Express, British Parliament, and places of strategic importance. Traffic monitoring and prosecution & crime detection have leapfrogged with the advent of CCTV.

After All, Just What Is This CCTV
Well, CCTV is a closed network of small surveillance TV cameras which telecast and/or record anything in their field of view. CCTV networks are usually wired together and finally connected to one or more monitors. There will be more monitors depending on the importance of surveillance the cost factors. If you have lesser monitors than the number of cameras, they can be switched in a sequence onto monitor/s. CCTV cameras have capabilities to either record hours of footage they filmed or telecast in a short range at a particularly dedicated frequency which can’t be intercepted by normal TVs.

After the tragic bombings in London Metro tubes last July, there has been an increased public demand for using DVR (digital video recording) cameras rather than traditional cameras with tapes. If you wonder how this would have helped the cause, take it here. Tapes were removed in the fortnight following the bombings for study, and follow-up attacks could not be recorded as a result.

Thinking of CCTV installation at your office? Take professional help and consult police if necessary. Some cameras can be hampered with or can be intercepted with cheap receivers. A complete installation won’t cost more than $4000, which is nothing when security is uppermost.

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TV Wall Mount and Widescreen and Flat Screen and…

Posted on April 11, 2008
By tech blogger in Uncategorized

Not long ago a TV was just a television set. Yes, there where sets with some extra features, stand alone speakers for example, but it was easy to pick your choice. Now you have a lot more options to take into consideration and a number of terms to learn. So let us see what kind of guide lines we can give you.

TV Wall Mount - These TV:s sell more and more but are considerably more expensive. They are called TV wall mount as they are so thin, 2-5 inches, or 5-10 centimeters. The picture is completely flat and the set should be connected to digital systems. The number one reason to buy a TV wall mount is the fact that it doesn´t require any space on the floor.

Today you can choose one of two techniques, LCD and plasma screens.

The LCD technique is best for screens up to 30 inches and they cost from just under $1,000 up to $3,000 USD. An LCD screen can also be connected to your computer, no problem.
One disadvantage can be on some screens, there is a delay in showing the picture, which can be rather annoying with fast movements like in football and other sports.

The plasma screens works better for really big screens, 32-50 inches. The prices are coming down but often start around $2,000 USD. The internet is of course the best place to start your search for a TV wall mount, LCD or Plasma. Also remember that the prices given here are probably higher than what you can find out there!

The TV techniques are developing fast, like the computer industry, so if you are not in a hurry, wait and the prices will drop. Especially for a TV Wall Mount. It is always more expensive when the technique is new. A great place to start your search for a TV wall mount is through consumer reports. They give you unbiased reviews of the best TV wall mounts out there.

If you want to experience the best of a sports game, nature or action movie, as you almost where there, you are probably ready to spend a lot of money . Then you will of course choose the widescreen and home movie equipment with a plasma or projection-TV.

There are some practical things to consider for a TV wall mount. How much is the weight of your particular TV model? Can you mount it on the wall in a safe way? Make sure that any mount that you consider is able to comfortably handle the weight of your TV. You will need a strong, sturdy equipment that can handle the weight. If the wall itself is the weak point you should perhaps look for another alternative than wall mount. Or secure the equipment to the floor or the ceiling. Many TV models have specially made equipment for a wall mount. You can also find good universal mounts available.

It used to be that the only wall mounts were a set of metal brackets that mounted to the wall and the TV hung on those brackets. Which made it harder to move the screen. Now you can find flexible wall mount units that actually let you extend the TV from the wall and turn it to adjust the viewing angle too.

In the ads for TV sets you will always get a long list of features. Don´t care about that list for a start. It is the picture on the screen that is of most importance. If the picture is bad that is the thing that will be most annoying. Use your eyes and compare several types of TV sets in a shop even if the environment is light and very different from your home. Bring your favorite picture to the shop and ask to have it shown. Now you can get a better understanding of the quality of the screen, the colours etcetera.

The sound is easy to forget. But a bad sound can destroy the most wonderful picture. It is great if you can listen to the sound more privately or try to be there when there are few customers. Stereo sound is the most common but is not necessarily automatically hifi-quality. You can often get a better sound if you connect the TV sound to your own equipment or put up extra speakers.

A TV wall mount will in the coming years be the most sold TV equipment. The prices will go down and the weight will be reduced considerably. They will be easy to mount and with great sound and picture. To put it simple, it is the future.

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Stay Warm With A Patio Heater

Posted on April 15, 2008
By tech blogger in Uncategorized

Patio heaters are heaters for use in open spaces. They are popular for domestic use and outside dining areas particularly in open cafes and restaurants with outdoor seating.

They usually heat a radius of 10-20 feet. However the radius varies according to the model and ambient atmosphere. Patio heaters usually raise the temperature from 10-30 degrees Fahrenheit.

Patio heaters are not designed for chilly winters as that would require a heavy duty heater with enormous energy consumption. They are used for relatively little increase in ambient temperature and particularly used in the evenings of late fall and early spring.

Patio heaters run on a variety of fuel like natural gas, propane, butane, kerosene etc. Some electric models are also available. The natural gas models are popular because they use the same fuel system as an outside grill. Portable patio heaters have a portable cylinder attached to the heating unit.

The principle used in most patio heaters is to heat using radiated heat and not convection. As a lot of energy gets used up in heating air for convection heating and very less percentage of heat is left for the user convection heating is not feasible. Radiative heating patio heaters are more economical as they provide heat to the user and air is not heated.

The heaters are provided with a heavy aluminum reflector at the top to direct the heat downwards and outwards from the heater. These aluminum reflector type models are termed as mushroom patio heaters or umbrella patio heaters. The pole is usually 3 to 7 feet tall. Ceiling patio heaters are also available in the market. These are installed permanently and need less maintenance than the portable one.

Patio heaters radiate anywhere up to 35,000 BTU (British Thermal Units). The emitter reaches a temperature up to 1150 degrees Fahrenheit. This causes bluing of the stainless steel. Also a brownish color develops on the emitter which appears like rust. However there is no cause for alarm as this brownish tint is normal and is not rusting of the unit.

The cost of patio heaters varies as per the model. A reasonable quality patio heater may cost between $100 to $300. Look for safety features like tilt switches, sealed burners, emergency cut off valves, flame controllers and electronic ignition systems etc when purchasing.

Patio heaters are available in shops where natural gas or butane is available. Some specialty shops for home decorating also keep patio heaters. Patio heaters are not to be treated as toys and it is prudent to not let children operate them.

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