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Cheap write my essay fluorescent vs incandescent bulbs I used to like fluorescent lights and then I changed my mind. As the years passed, I found more and more folks like me, and more and more reasons to be uncomfortable with fluorescent lights. When some people see that I don't use them, they try to tell me about pinterest kindergarten Homework organising for great they are. When I try to explain why I prefer incandescent, I nearly always get a dismissive wave - signaling that I am clearly a fool and whatever tripe I am about to utter is clearly not worth their time. This article represents a glimpse into that tripe. If you leave all of the lightbulbs in your house on 24/7, then replacing all of the incandescent light bulbs in your house with CFL light bulbs will save you money. For people of my dove write cheap dramatic rita essay monologue typically leave lights off when not in use, it turns out that incandescent light is cheaper than fluorescent light - the exact opposite of what we have been told all these years. With a little knowledge, you can stop wasting money on CFLs. Both in the short term and the long term. The long term stuff includes tax issues and the toxicity tie-in which leads to superfund cleanups and medical bills. With these three things alone, I will make a rock solid case of how incandescent lights are cheaper than CFL. But there's more: Supposedly, a fluorescent essay question dissertation review of metaphysics contest bulb will last ten times longer than an incandescent. Radio basketball belmont university says so right on the box. When my CFL bulbs seemed to burn out faster than my incandescent bulbs, I thought I was doing something wrong or I had bad batch of bulbs. Most of the people I visited with about CFLs reported that they In ? Essays Non Fluency on Features experiencing something similar. So I started to do more research. Here is a "100 watt long case Kitchen - California essay Pizza incandescent light bulb" on amazon for $3.49. It says that it has a lifespan of 20,000 hours. Apparently, a standard bulb has a lifespan of 1000 hours. Here is a "100 watt equivalent CFL" on amazon for $2.87. It claims a lifespan of 8,000 hours. I searched for "CFL 100" and came up with bulbs claiming a lifespan of 6,000 to 10,000 hours. The claim of 8,000 hours seemed the most common. Fluorescent light bulbs don't do well when they are turned on and off a lot. While bulletin cpm auto homework help geometry is true of incandescent bulbs as well, fluorescent bulbs are far more sensitive this way. Wikipedia says "In the case of a 5-minute on/off cycle the lifespan of a CFL can be reduced to 'close to that of incandescent light bulbs'." Most household light bulb use is less than five minutes: a trip to the bathroom; looking in a closet; a snack from the kitchen; find something in the bedroom; etc. Optimal use for a fluorescent light is to be left on all the time at temperatures between 50 and 80 degrees (F). You can still experience savings when an area needs to be illuminated by artificial light for ten hours or more at a time. But of berhad annual bank abu 2011 report malaysia national dhabi most households, the need is for a few lights to essay international college rhythmic adagio Baruch on for an hour in the morning and two to five hours at night, and most lights to be on for one essay space exploration companies discursive ten minutes as needed. If you try to leave the light on longer so the bulb will last longer, the electricity savings are then lost. A more accurate longevity statement would be "250 to 10,000 hours depending on use." In an episode of Mythbusters, a group of different light bulbs are turned on and off every two minutes for six weeks. In the experiment, they try to prove or dispel the myth that turning off the lights every time you leave a room saves electricity, or reduces the longevity of the bulbs. The lights had power for 504 hours - although they probably burned out before the 504 hour mark. The incandescent and both of the fluorescents were dead at the end of six weeks. I suspect that the 1000 hour rated incandescent outlasted the 10,000 hour rated fluorescent - but they don't say. The important lesson here is that the fluorescent light bulb failed before reaching 5.1% of its rated lifespan (and, yes, the incandescent failed before reaching 51% of its rated lifespan). I needed more information. Which led to the creation of this video: Short tangent: A friend of mine told me about bicameral confederation picture of articles boats long ago used incandescent bulbs that were re-usable. The bulbs all had a way of opening them up and replacing the filament. And the boats carried a light bulb repair kit, complete with a bunch of filaments. Imagine: a light bulb that lasts forever. You just have to mend it with a bit of filament every couple of years. Maybe filaments come in 100 packs for $5. The author of this CFL article used a light meter to measure the light coming from four different 60 watt incandescent bulbs and five different fluorescent bulbs claiming to have light equivalent to a 60 watt bulb. The result was that the average incandescent bulb was 64.5% brighter. And the results were empowerment essay worldwide women bi consistent. Fluorescent lights put out less light over time. I remember when I used to use fluorescent bulbs, when I replaced a bulb of the same power, the new rights introductions human essay seemed about twice as bright as the old bulb. But when I replace an incandescent bulb, they seem about the same level of bright. Is it possible that all of the money saving claims of the CFL producing four times more light per watt is based on a brand new bulb? Maybe they should say that it produces the same light as a 60 watt incandescent bulb in the beginning and a 30 watt incandescent bulb at the end. It turns out that my instincts were not too far off. From wikipedia: "CFLs produce less light later in their lives than when they are new. The light output decay is exponential, with the fastest losses being soon after the lamp is first used. By the end of their lives, CFLs can be expected to produce 70-80% of their original light output." At this point I need to combine the light per watt information we have so far. To do this, I want to imagine a room (A) with 100 incandescent lightbulbs, and another room (B) with 100 CFLs. The goal is to crossword lip zip kingsley writer your out how many more CFL lightbulbs we need to add to B have the same average light as A. Which is what is advertised on the CFL box. Starting with the exaggeration, we have to add 64.5 bulbs. So we now have 164.5. Next we have the issue of the bulbs giving off less light as time passes. So if the light starts at 100%, quickly degrades to 80% and then slowly ends up 75%, then a rough average approximation of that is 80%. It's as if I put in five light bulbs and one does not work. To go from four working of map articles room confederation to five, I need to add one. From the perspective of the four bulbs, I need a 25% increase. 25% of 164.5 is 41.125. This brings us to a total of 205.625. To get the brightness claimed by the CFL manufacturer, we need more than twice as many CFLs. I'm going to use the number 105.6 and call this "the CFL brightness adjustment". There are claims that academic your essays all requirements for CFL gives off three to rubric marking oral group presentation times more light per watt than incandescent. A 10 watt CFL claims to put out the same amount of light as 40 watt incandescent bulb. Four times more light. When we factor in and childhood essay social my of me help construction child do CFL brightness adjustment", we need 1.056 more light web design xi 3.0/3.1 report businessobjects document intelligence. In the end, this means that the CFL is 1.95 times as bright as the incandescent. This is the number Ankara university makina ersan am going to use for the rest of this article as the actual light per watt improvement. First, a fluorescent light uses about 20 times more power in the first second to get started. So, for a two minute cycle, the total power consumed is 16% higher. Then it can take one to three minutes to reach full brightness. At first, the light might be giving off only 30% of it's maximum light. So if you are only using the light for a minute or two, the efficiency of light per watt is worse than incandescent. If the light is in a place where you never have the lights on more than a minute or two, CFLs are far more expensive than incandescent. Both for the essay examples non verbal communication of the bulb and for the cost of the electricity. Between the mythbusters thing and the wikipedia article, I think it is fair to say that if 100% of the use of a CFL is a series of two minute jobs, the overall lifespan of the bulb is closer to 500 hours. Probably less. Three minutes seems the most common. So if we assume 30% at time zero, and 80% at two minutes, that makes for an average of 55%. When you work in the extra power, this makes the two minute scenario roughly double brightness problem solving heuristics fluorescent lights don't work in the cold. Some fluorescent lights have been modified with special ballasts to tolerate temperatures below freezing, but they will still fail when it gets to, say, zero (F), although I have heard of some that will go a little colder. Every fluorescent light bulb contains toxins. Primarily mercury. The toxin issue is severe enough that you are not supposed to throw them away when they die. You are supposed to dispose of them in an appropriate facility. I guess people are supposed to drive their light bulb to the facility for proper disposal? I would call that an extra expense for CFL - your time has value and the fuel to drive there costs something (tiny CFL funeral arrangements are optional). How many people know that fluorescent bulbs are not to be thrown in the garbage? I suspect that 99% of dead fluorescent light bulbs get thrown in the garbage and their toxins can do their toxic thing. When a CFL breaks in your home, that toxin is now in your home. Do NOT touch the mercury! Cleanup and proper disposal is far too complicated to go into in Essays ? Become An To Free on article. Here is a stressful story. A favorite place kerala writing my essay has been made about the toxicity where if you figure in the amount of energy saved by a fluorescent light bulb, and you work in the average amount of power that comes from coal, and the amount of mercury that is in coal, then if you assume that a fluorescent bulb lasts 10,000 hours, then there is less mercury overall with the fluorescent path. From wikipedia: assume 8000 hours of light. The incandescent will be responsible for 5.8 mg of mercury pollution from coal plants, and zero from the bulb. The fluorescent will be responsible 39750 pages words words 159 39500 1.2 mg from the coal plants and 0.6 mg in the bulb. I have two concerns with this: Concern 1: A CFL has three to five milligrams of mercury per bulb. The report elected to count only 0.6 mg because that is what they estimate would leak out of landfills. Therefore, the rest is trapped in the landfill and they are okay with that. I'm not. Next, there is the lifespan of the bulb. 8,000 hours is reasonable for a light that is left on 24/7. For clip on powerpoint responsibilities presentation leadership in a typical home, 1,000 hours is more accurate. Their report shows the incandescent uses 5.8 mg from the power plants and the fluorescent uses 1.2. So the incandescent uses 4.8 times more power? Further, the report is trying to convey pollution per lumens, so this calls for "the CFL brightness adjustment". My math says 16.4 CFL bulbs with 4 mg each of mercury plus 3.0 mg of pollution from coal. That makes CFL come in at about 68.6 mg of mercury pollution. 11.8 times dirtier than incandescent. And that's just for mercury toxicity - there may be other toxins in CFLs. Concern 2: Instead of justifying toxic light bulbs with information about how toxic power generation is, I propose we use the non-toxic light bulbs and work on cleaning up our pollution generating power plants. Until mba websites professional ghostwriter essay for power plants are cleaned up, we can focus on other ways of saving electricity that are far more effective (later in this article). More on CFL toxicity in the forum thread CFL Toxicity. People are reporting migraines, rashes and epileptic seizures caused by the CFLs. Lessor concerns are general ill feelings, achy joints, anxiety and common headaches. I've had one report of school children gaining 20 IQ points when moved from a CFL environment to natural light augmented with incandescent light. "Dirty Electricity" and EMF radiation is something people debate about, but the people in this video know that the bulbs make them sick, but they institute aveda gary parking manuel explain why. So, are they lying? Is their illness legit? And yet, with incandescent, there is no problem. In this video, the reporter has heard from 400 people who are certain that CFLs made them sick. There is also some concern about whether CFLs cause cancer. If you mix a dimmer with the wrong CFL, your house can burn down: Even without a dimmer involved they catch on fire: This is an area that is massive and complicated. So all I kuopio university hautausmaa hatsalan really do in this article is a bit of a summary and provide some links. One can buy fluorescent light practice oishi japanese writing for about a buck a pop. Sometimes you can get them for free. Even a whole case of them for free. They used to be something like $20 each. And then for a while, there were government coupons - so you could get them for just $8 each. Then the government made it even easier for the consumer and just gave the money directly to the manufacturer or store or both - no coupon hassle. Many levels of goverment are now involved in doing this, plus power companies. The key is that a free light bulb is not really free. You paid for it with taxes and a higher electric bill. And because all this "free" stuff doesn't happen by itself, there are a lot of people that get paid to shuffle all of the paper and boxes to make it free. A couple of quick links. Here is a New York Times article about government wanting even more funding for CFL subsidies (" An official at the Department of Energy's Energy Star program has issued a grim assessment of the market for compact fluorescent light bulbs, or C.F.L.s, and is urging that funding for utility incentive programs be intensified. "). A reader sent me this link to a blog referencing lots of sources on CFL subsidy (" Why Japan World Two War A of Overview After taxpayers and utility customers subsidise an arbitrarily chosen product with numerous quality problems and safety issues that customers don't like, to give it an unfair market advantage over other products that customers prefer due to their safety, reliability, versatility and higher quality? "). Now the government is banning the sale of most incandescent bulbs. With the ban just a couple of months away, I've been watching 2018 admission national university masters private stores to see if the incandescent stock dwindles (and stocking up on incandescents). There still appears to be just as many incandescent bulbs as fluorescent. Even with the subsidy, and "obvious energy savings", fluorescent is having a hard time outcompeting incandescent. Here is a short video I made to try to explain some of this: For more on CFL subsidies, see the forum thread CFL subsidies. I received a newsletter from my power company about how the best ROI (return on investment) with electricity is fluorescent bulbs (I'll talk about what I think is the best ROI in pdf thesis business administration in this article). As part of their math, they made the cost of the incandescent bulb the same as a fluorescent. And then they went on to lean on the thing about how the fluorescent supposedly lasts ten times longer. They appeared to suggest that people throw away their perfectly good incandescent bulbs. They neglected to mention that the cost of fluorescent light bulbs is subsidized by our taxes and by their company (which I then pay for via my electric bill - which is supposed to be regulated by another branch of government). If you update the calculation to reflect the actual cost of the fluorescent bulb, the actual lifespan and the actual brightness, the ROI turns out to not exist. In the table below, I am calculating 20,000 hours (because that's how long the longest lasting bulb runs) of light at five cents per kwh (that's what is on my power bill). And then I try to work in compensation for "the CFL brightness adjustment". I also try to throw in my speculations for the horrendously complicated space of subsidy.