Monetary and Electrical Savings Using a Monitech Monitor
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We have been hard at work, trying to find ways for you, the customer, to get the most bang for your buck. With the usage of our LED back-lighting, we have managed to transfer substantial yearly savings to you. Below is a small chart, showing mow much money and electricity is saved every year, on average.
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As you can plainly see, you can save a lot of money on every display. Over the course of 10 years, you will recoup over half of the cost of the display itself!
How did we get these numbers?
We did not use creative accounting, we did not skew statistics, and we did not run the tests multiple times and select the best result. We simply measured how many Watts a generic 12 Inch CRT display uses, how many Watts a Monitech LCD replacement with LED back-lighting uses, and compared the two. Here were the results.
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Generic 12 Inch CRT Monitor
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Monitech LCD Replacement With LED Back-light
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These are the findings we had after testing the displays. The displays we used were a Generic 12 Inch CRT display, and a 10.4 Inch Monitech replacement display. The reason for the size difference is that when a customer needs a replacement for a 12 Inch CRT, we supply a 10.4 Inch display. Now for the math bit
When we did our testing, we found that the CRT used on average 100 watts, while our display only used 4 watts. The explanation for why this is can be found below. To determine the yearly power consumption, we used the following formula:
Power Usage Per Year = (W / 1000) * (24) * (365)
Where 'W' is the wattage.
The results were as follows:
For The CRT-
(100 / 1000) * (24) * (365) = 876 kWh per year
For the LCD-
(4 / 1000) * (24) * (365) = 35.04 kWh per year
So how does this save me money?
As you probably know, you pay for electricity per kilowatt hour (kWh). It stands to reason that the more electricity you use, the more you will be paying. These charts were based on our local electrical cost of $0.10 per kilowatt hour. Old CRT displays use A LOT of electricity; in our test, we noticed that they were using exactly 25 times more than the LCD. This is because of the technology being used.
Where exactly is the wattage being saved?
Within a CRT are many components required for proper function. Many of these technologies are outdated, and are no longer used in displays. The three largest culprits causing inefficient energy usage are the electron gun, the fly back transformer, and heat.
The electron gun produces a beam of electrons that cause the phosphor in the tube to actually ignite, which produces the video image on screen. For the beam to travel through the tube properly, the tube needs to be electrified, which is where the fly back transformer comes into play. This device takes 12 volts coming from the power supply, and turns it into 12 000 volts!. As a byproduct of these two actions, heat is produced. Any heat being produced is energy that is being wasted (that is, not doing its intended job). Old CRT monitors actually get so hot that they need a heat-sink (similar to the ones found in your computer) to dissipate all of the waste heat energy being produced.
LCD displays do not have any of these problems. An LCD has no fly back transformer, no electron gun, and the heat production is miniscule. Essentially, it functions by using tiny electrodes, which charge a layer of liquid crystal. The action itself produces no light whatsoever, and without a back-light, you would be unable to read an LCD display unless it was in direct sunlight. The back light is a light-bulb that sits behind the display, and when it shines, lights up the screen. This makes the screen images viewable.
The amount of energy required to light the back-light is where most of the wattage is used. For example, if we used an incandescent (your typical room light-bulb) bulb to produce the back-light, it would require more power (wattage), simply because that is how an incandescent bulb works. A fluorescent back-light is a better option, as it produces "cleaner" light, for less wattage. The third (and best) option is what Monitech uses in most of our back-lights: LED's. The LED (light emitting diode) uses such a miniscule amount of power that we have managed to get the power consumption down to 4 watts, which is an incredible achievement. Learn more, or contact us!To learn more about power consumption, or to find out how Monitech can save you money, please Contact Us! We are always happy to help!
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