Friday, October 28, 2011

How to Choose the Best Wall Heaters

Heaters are familiar tools or devices that are useful during winter season. If you are looking for a heater may be you are looking for the wall heater. Wall heaters are available in various forms like, electric wall heaters, gas electric wall heaters and infrared wall heaters.

Electric wall heaters:- These are very popular and are very expensive option for producing heat at home. These draw in and subject cold air through a series of heating mechanisms, so that when released, the air is noticeably of higher temperatures. While being very effective, the maximum power used by this heater is 2,400 watts which limits heating to moderately sized structures.

Infrared wall heaters:- Infrared heaters are newer technologies and generate heat through the infrared radiation. These types of heaters directly heat the objects. Infrared heaters are cheaper in energy convention as well. It is capable of heating a regular sized room using only 800 watts of electricity, while other electricity heaters takes 2000 watts for the same. Infrared heaters typically come in stand-alone compact models although there are some models that can be installed within the walls of a structure.

Gas wall heaters:- These heaters rely either on propane or natural gas for energy source. Gas heaters comes with ventilation and without ventilation systems. Ventilation systems are called flued gas system, which efficiently force the pollutant air particles and water vapor produced from the burned up gas through the chimneys or vents. On the other hand, those without ventilation systems are called unflued gas heaters. Since, these systems force dangerous gas by-products out of the heated structure in to the air, then can invariably cause serious health problems to the users. Make sure to make provisions for effective ventilation when you decide to utilize this type of heating system for your home.

Wednesday, October 19, 2011

Air Purifiers Act as Asthma Controllers

The attack of asthma can be a scary experience for many asthmatics. They may experience a loss of breath, wheezing and coughing. But, the asthma patients can greatly benefit from air purifiers, apart from their regular medication.

Air purifiers can help to reduce the amount of asthmatic triggers found in indoor air. Most air purifiers use high efficiency particulate air filter, or HEPA filters indoors to eliminate toxins in the air. These filters are also able to filter the pollutants from air that can trigger the asthma attack such as mold spores and dust mites. The filters found in most air purifiers can absorb 99.7% of all contaminants in the air that are 0.03 microns in size or larger. The particles that are 0.03 microns and larger include most of the toxins and can trigger an asthma attack.

Mold spores and bacteria present in indoor air may leads to asthma attacks. Once the mold or bacteria enters in to the lungs it is possible that an asthmatic will experience an attack due to these toxins irritating the lungs and breathing passageways. If mold and bacteria are not completely eliminated from the air, they have the ability to grow back and circulate in the air again. These can generally grown anywhere but are mostly attracted to damp conditions. The only way to completely extinguish mold and bacteria from the air is through the use of air purifiers. The air purifiers are able to absorb mold spores or bacteria that are found in the indoor air and stop their circulation. When no mold spores or bacteria are present in the air, asthma sufferers are able to breathe easier without worrying about an attack.

Clean indoor air is the first step for controlling the asthma attack.

Friday, October 14, 2011

Do Contact Lenses Protect Against UV Radiation?

It is a known fact that people use contact lenses to ensure right vision. They are better in providing stable and peripheral vision without getting fogged up in extreme weather conditions. Moreover, specific contact lenses are also known to protect your eyes against UV radiation.

Solar radiation directly strikes the surface of eye and focus or concentrates on the cornea which is an outer layer of the eye. The radiation then passes through the pupil and is absorbed by the lens. UV radiation passing through the lens may cause cataracts. It is also considered to affect the surrounding tissues of the eye. However, these special designed UV blocking contact lenses are very much helpful to protect your lens from the effect of UV radiation.

Certain UV blocking agents are included in the contact lenses which protect the eyes. They are meant to avoid the cataracts, premature degeneration of cornea or blurred vision which are likely to result from exposure of eyes to UV radiation. Some of those UV blocking agents are considered to block 90% of the UV radiation (UV-A and UV-B radiation) while some others block 99% of it. The UV blocking contact lenses protect the inner structures of your eye like iris, cornea, lens and retina. They are completely clear and are not associated with any downsides. Though they were developed long back, they have become popular recently. Therefore, they not only ensure good and corrected vision but also maintain eye health avoiding dangerous effects of UV radiation. However, it is very much necessary to consult your eye practitioner when considering to purchase UV blocking contact lenses.