Friday, November 18, 2011

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Thursday, November 10, 2011

Air Scrubber - How Does It Clean?

!: Air Scrubber - How Does It Clean?

What do you use an air scrubber for? Air scrubbers are a reliable method to remove airborne gaseous contaminants from any indoor area. Many manufacturing plants, businesses, workshops and even homes use air scrubbers. There are two processes which an air scrubber can utilize to clean the air of gaseous contaminants. The first process commonly used with an air scrubber is called adsorption. Adsorption is a process in which one substance is drawn to and stuck on the surface of another. The words adsorbent and adsorbate relate to the act of capturing molecules. The adsorption process can be done easily when a material uses attractive force to overcome the kinetic energy of a gas molecule.

A more clear example of how adsorption works is the way cigarette smoke is absorbed quickly into a car's interior lining. It's really incredible how the gas molecules of the cigarette can leave the air and go into the car's interior lining. When you enter a vehicle of a smoker you always can tell immediately that they smoke because of the gas molecules held fast in the vehicle's interior lining. Air scrubbers adsorption process works much in the same way as the cigarette smoke in the car does. Instead of interior lining adsorption uses granular activated carbons (GAC's) or sorbents such as activated aluminas to attract gas molecules. An air scrubber also uses the a resistance to airflow, the adsorbent bed depth, temperature, gas velocity, and the characteristics of the contaminants which need to be cleaned out of the air to more effectively rid the air of gaseous contaminants. The adsorption process is one of methods an air scrubber utilizes to clean the air of pollutants.

Another process an air scrubber can use to remove airborne gaseous contaminants from the air is called chemisorption. Chemisorption consists of adsortpion and irreversible chemical reactions. Most adsorbent materials do not eliminate all gases equally. It can be ineffective at time if you are seeking complete removal of pollutants. Chemisorption improves on the adsorbent process by incorporating various chemicals into the equation. During the chemisorption process certain chemicals are mixed with the less-adsorbable gases which reacts by forming a new more stable chemical compound. These new chemical compounds are bound to the application as organic or inorganic salts. This new compound is sometimes released back into the air as CO or water vapor. Chemisorption is the result of various chemical reactions on the surface of the adsorbent.

It is a two stage process. The adsorbates are physically adsorbed onto the adsorbent. Then they chemically react to the adsorbent and a chemical impregnant is added into the mix. The most common chemical impregnant used during this method of an air srubber is potassium permanganate. The chemisorption process of an air scrubber can effectively help clean the air of gaseous contaminants such as toxic gases, corrosive gases, irritant gases, odorous gases, and (ETS) environmental tobacco smoke. The air scrubber process you select to use it totally up to you and your air cleaning requirements.


Air Scrubber - How Does It Clean?

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Monday, November 7, 2011

Propane Generator - How to Quickly Determine If a Propane Generator is Right For You

!: Propane Generator - How to Quickly Determine If a Propane Generator is Right For You

A few years back, one of the greatest drawbacks to buying a propane generator was the price of the unit itself and the cost associated with getting it professionally installed. Thankfully, those days are over! The propane generator has become affordable even for the most finicky of buyers. Unbeknownst to most people the propane generator now packs a very powerful punch both in cost and in features.

As you have probably gathered, in today's economy going without electricity for an hour simply won't cut it; let alone being without power for days or weeks. As you know, power outages can happen anywhere, anytime and can occur due to any number of circumstances or situations. They power can go out due to inclement weather, equipment malfunction, software malfunction, an accident somewhere in the power grid or a host of other reasons.

The most critical question that everyone asks is, "How long will the power be out?" Unfortunately, in most cases no one can really answer that question with any absolute certainty. It could be out a few hours, or it could be out for weeks as we saw in the 2009 Ice Storm.

With some generators, that timeframe becomes extremely critical because of the fuel source. For example if your generator is fueled by gasoline and you have enough fuel capacity to last a total of only twelve hours, that means you will need to refuel before that twelfth hour deadline. But what happens if the gas stations are shut down and you have already exhausted your gas reserves? What happens if the roads won't be cleared for another ten to twelve hours? At that point, your backup power will be effectively shut down.

If you select a propane generator, you have the option of having an underground tank installed with a capacity of anywhere from 200 gallons to 500 gallons. This provides you with three important benefits. The underground tank is protected from the elements, meaning you won't have any concerns about inclement weather negatively impacting your fuel source. Secondly, when you use fuel sources such as gasoline or diesel, you must go through the refueling process every so often.

Even if you have a 35 gallon reserve gas can, you'll still need to refuel after 48 hours. By adding a underground tank to your propane generator, you can sit back and enjoy the fruits of your labor without any concerns. Here are some additional questions to ask yourself to help you determine if a propane generator is right for you.

Are you living in an area prone to power outages?
Are you living in an area prone to prolonged power outages?
Do you have a home medical device that is powered by electricity?
Do you have medicines or other health-related products that require refrigeration?
Do you have any elderly individuals, infants or anyone else that will be susceptible to extreme cold or heat due to power outages?
Do you have valuables in home that are protected by a security system?
Do you run a home-based business that requires power for office equipment?
Do you rely on an electrically-operated well, electric water purifier or a sump pump?

If you answer YES to any of the questions, a propane standby generator will be the best investment for you and your family's safety and security. Suffice it to say, if one of your major concerns is how much back up power time will you have, this is the only type of standby generator that will provide you with the power you need over a long period of time without needing to refuel.


Propane Generator - How to Quickly Determine If a Propane Generator is Right For You

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Friday, November 4, 2011

Cascade® 1500 Canister Filter for up to 200 Gallon Aquariums, 350gph

!: Last Minute Cascade® 1500 Canister Filter for up to 200 Gallon Aquariums, 350gph Buy Now

Brand : Penn-Plax
Rate :
Price : $138.99
Post Date : Nov 05, 2011 02:03:37
Usually ships in 24 hours



Cascade® Canister Filters from Penn Plax® offer heavy-duty multi-stage external filtration for your fresh or salt water aquarium. The Cascade® 1500 Canister Filter can handle aquariums up to 200 gallons efficiently providing up to 350 gph of flow. These filters allow you to combine the benefits of several types of media delivering powerful mechanical, chemical & biological filtration for crystal clear water in fresh or marine environments. Easy to install, these filters come with all the necessary accessories to connect to your tank and begin filtering in approximately 30 minutes and see visable improvement in less than a day! A quick push-button primer makes start-ups easy and the two independent directional 360-degree rotational valve taps make placement worry-free. Flow-rate control valves and swimming pool-style hose clamps make setup and adjustment easy. The popular cobalt blue color will look attractive next to your tank and the sturdy rubber mounted tip-proof rubber base keeps the unit in place. Each pump comes with large filter trays, start-up filter media & input/output tubing. The large filter trays mean you can use more media and have longer periods between replacement. An air-tight seal assures proper flow rate while maintaing ultra quiet operation. The easy-lift clamps make it simple to release the vacuum and remove the top for changing media or other maintanance. Directional returns help to suspend waste matter so it can be taken in by the filter leaving nothing but clear, clear water. Use any combination of media including bio-floss, bio-sponges, activated carbon and others to accomplish a wide array of aquarium filtration needs.

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Tuesday, November 1, 2011

RV Converters

!: RV Converters

Just when I thought we thoroughly covered RV electrical systems I get another good question about something I failed to discuss in my previous articles. I received one of these good questions the other day and thought there would be many other RVers who would like to hear the answer.

Question: In one of your previous articles you list the RV converter as drawing 5 amps. Since, I believe, the converter is operating any time you plug into a 120 volt AC system (30 Amp), does this mean that in reality you only have 25 amps to work with (30 minus 5 = 25, and not considering clock draws, etc.)? I am developing an electric amp chart to hang inside a cabinet and I need to resolve this question as this would make a significant difference.

First of all let's talk briefly about what your RV converter does. When you plug your RV into an electrical source, or when you use the onboard generator, the converters job is to reduce 120 volts AC down to 12 volt DC to supply power to all of the 12 volt appliances and accessories in the RV. If you weren't plugged into an electrical source your RV battery(s) would supply the power to all of the 12 volt appliances and accessories in the RV. The converter basically prevents your RV battery(s) from draining when you're plugged in.

There are two types of amperage draw concerning your RV. The AC amps we are using and the DC amps we are using. I'll try to explain. When you plug your RV into an electrical source and use 120 volt appliances like the roof air conditioner, the microwave and a TV you are drawing amps from the available supply at the campground, usually 30 or 50 amps depending on your RV electrical system and the electrical supply you are plugged into. When you're plugged into an electrical source and you use DC appliances and accessories like fans, lights, pumps or the TV antenna booster you are drawing amps from the converter. Are you more confused now than when we started? Let's try wording this a little different.

Let's say you plug your RV into a 30 amp electrical supply and you only use 120 volt appliances. You're using available amps from the 30 amp electrical supply for whatever 120 volt appliances are running, but the converter is drawing almost 0 amps because you're not using any DC accessories. It will use a small amount for items like the LP gas leak detector, clocks or maybe an aisle light, but not enough to really affect the amperage you are plugged into.

Your RV converter is rated for a certain amperage i.e. 30 amps, 45 amps, 55 amps. In other words a 45 amp converter is capable of running 45 amps worth of 12 volt appliances in the RV. When your RV converter is working at its maximum capacity, which in this case is producing 45 amps for 12 volt appliances and accessories, it is drawing around 5 amps out of the 30 amps available from the campground electrical supply.

Let's say you're plugged in and you're using a couple of 12 volt overhead lights (2 amps) and a ceiling fan (4 amps). In this case your converter is drawing very little from the campgrounds 30 amp electrical supply. In another scenario let's say you're using a lot of 12 volt overhead lights (8 amps), you're running the furnace fan (11 amps), water pump (4 amps), 12-volt television (5 amps), range hood fan (2.5 amps), and the battery is being charged by the converter charger (3 amps). Now, when the converter is running close to its full capacity it draws the full 5 amps from the campgrounds 30 amps, leaving you with 25 amps for other 120 volt appliances and accessories. As you can see it's unlikely that all of this would be happening at one time. The bottom line is the converter amperage draw will fluctuate depending on the 12 volt demand placed on it.

Another question I was asked was; I know my converter is also a battery charger so why won't it bring my discharged batteries back to a full charge? RV converters do provide a charge to your RV house batteries, but only a small portion of the converters amperage rating is used for this. Normally 3 to 5 amps, which are not nearly enough to charge batteries that are discharged.

The converter battery charger is designed to keep the house batteries topped off with this trickle charge. Another problem with older RV converters is they charge at a fixed voltage in the range of 13.5 volts. If your batteries are fully charged this can be too much for a float charge and over time it will deplete the water level in the batteries cells. This is why it's important to check the water level in your batteries on a regular basis, especially when you leave the RV plugged in for extended periods of time. You need a three stage charger that can provide a bulk charge then an absorption charge and finally a float charge. Newer RV converters on the market are capable of charging the batteries this way.

Now, to help you out with your amp chart I am including some typical amperage draws for appliances and accessories commonly used in RV's. Keep in mind I'm not an expert on electricity by any stretch of the imagination. This is just a basic guide to assist you in how many amps you are using at any given time. If you need to know exact amperage ratings you can check the data plate on any motors, appliances or electronic equipment you are using. If you can't locate a data plate with this information check the appliance or electronic equipment owner's manual. This information might provide wattage requirements rather than amps. Here are a couple of simple formulas to help you convert some common electrical terms.

Wattage % Volts = Amps
Amps X Volts = Wattage

One other thing to keep in mind is many RV appliances require more amps to start the appliance than they do to run the appliance. A roof air conditioner can draw 16 amps to start, but may only use 13 amps once it is running.

120 Volt AC Amp Ratings:

Appliance or Electronic Equipment Estimated Amps

Air Conditioner (X number of A/C) 12-16 Amps

Blender 5-6 Amps

Coffee Maker 5-8 Amps

Compact Disc Player 1 Amp

Computer (Laptop) 2-3 Amps

Converter 1-5 Amps

Crock Pot 1-2 Amps

Curling Iron


RV Converters

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