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Power Savings: CRT Vs LCD Monitors
(25-09-2012)
 
Power Savings: CRT Vs LCD Monitors
 

Raise your hand if you don’t want to save on your power consumption? No One … Well … That’s what we thought, everyone wants to save on power consumption, and even if you are not keen on saving of planet, you still want to save some bucks from your electricity consumption. However, in attempt to save some bucks on the electricity bills you do a great deed towards saving the planet.

Having said that, we will not ask you to go plant a tree, or save papers or save fuel (all of which, by the way, you should do) or any other such activity. Being associated with consumer electronics, we have our ways of saving the planet, which consequently contribute to the other causes to conserve the planet. One, of the simplest and the most efficient ways of doing so is by saving electricity. Now, by saving electricity we don’t want you to shut all your electronic devices (we’d never want that). Instead, we’d recommend some alternatives, which not only will enhance your overall experience with the electronic gadgets, but also will cut down your electricity bills sharply and subsequently will make you a major contributor in Earth conservation drive taking place all across the globe.

The simplest way of doing that is by switching from the conventional CRT monitors to LCD monitors. In the modern computer driven age, we spend most of our daily time sitting in front of a monitor, be it for playing games, interacting on social networking platforms, or just editing some spreadsheets, which makes them one of the biggest electricity-consuming device in our homes or offices. So, if you can save a little on that front, you surely can save a lot.

Now, you must be asking how big difference does switching from CRT to LCD makes monetarily, after all that’s what will determine your decision to switch. In order to explain that, we’ve prepared a simple test, which you can perform at your home or office and can see how much will you be saving switching to LCD Monitors.

For the test, we’ve taken some assumptions, which might vary for every individual and you can change them accordingly. A = Usage Time of monitor (same for CRT & LCD) – Hrs/day: 8 Hrs/day (for moderate use) B = 365 days/year C = Power Ratings: For 14-in to 15-in CRT Monitors --- 60 - 75watts For 17-in to 21-in CRT Monitors --- 80-135 watts For 14-in to 15-in LCD Monitors --- 30 – 35 watts For 17-in to 21-in LCD Monitors --- 50 – 65 watts

D = Cost per kWh: Rs. 5 (Average Pricing for Mumbai, with usage over 300 units) Now, put all those variables into the following equation and you’ll get the amount you will be spending while using CRT and LCD monitors, and using those two figures you can calculate the amount you will be saving. So, here’s the equation [(A) x (B) x (C)] / 1000 watts/kW = Yearly kWh consumption Let’s denote yearly kWh consumption by “E” E = Yearly kWh consumption Now put that value in below equation (E) x (Rs/kWh) = Yearly Electricity Cost Now, if you are using your CRT monitor in Mumbai for 8 hrs/day for 250 days in a year you will be paying [(8) x (365) x (100watts)]/1000 = 292 kWh annual Electricity consumption (292 kWh) x 5/kWh) = 1460 per year Now, using the same formula for a LCD Monitor, [(8) x (292) x (50 watts)]/1000 = 730 kWh annual Electricity consumption (100 kWh) x 5/kWh) = 500 per year

Using this simple formula it becomes apparent that on an average, the CRT monitors doubles the yearly consumption, which depending upon the usage could vary significantly. If you still are, using CRT monitors then it’s time to switch to LCD monitors and save big bucks on it.