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Does it use more energy to turn Compact Fluorescent lights on and off or just leave them on?
Wiki User
∙ 12y ago
There is negligible savings by leaving the light on. It does take slightly more energy to turn on a fluorescent light that to just keep it burning, but their are no savings if the time is more than a second or two.
we have tested that when you keep the lights on it uses more electricity than if you turn the lights on and off
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThis doesn't require a rocket scientist to figure out. If you are not going to need the lights for any extended length of time turn them off, and if you are going to need them often leave them on. Turning them off and on frequently will shorten their lives considerably.
Wiki User
∙ 11y agoWhen fluorescent lights first came into use in the 1950s, people developed the habit of leaving the lights on. Like many myths, this one has lived well past its useful life. As a general rule, you should turn off the lights whenever you leave a room. It's just a good habit to develop. Turning off the lights reduces operating costs in two ways: it saves energy and reduces the number of lamp replacements. But doesn't it take more energy to start up the light than it does to run the lamp for several minutes? No. It is true that fluorescent lamps draw an inrush current that is five times greater than the operating current. However, the initial surge of a rapid start lamp lasts for only 1/120th of a second. So, you have to turn the lamp off for only one second to save the same amount of energy used to start it up again. But, doesn't the starting cathode erode each time the lamp is started? Yes. Cathode erosion is one factor that limits lamp life. While turning off the lights reduces the number of hours the lamp will burn, it extends the time between lamp replacements. For example, a standard rapid-start fluorescent lamp operating continuously will burn for 38,000 hours or 4.3 years. If the same lamp burns only 12 hours per day, the number of operating hours drops to 30,000. However, the lamp will remain in service for 6.8 years. So, you cut operating energy in half and reduce lamp replacement costs by 30 percent. It's not necessary to go through elaborate calculations each time you leave a room. As general rule of thumb, it's always better to turn off the light, even if you'll be gone only a minute or two. Make a habit of turning off the lights every time you leave. Forty years ago, leaving the lights.
Wiki User
∙ 13y ago100%! dont leave lights on for ever!
To answer the question (!)...
Multiply the power-rating of the lamp, converted to kilowatts, by the length of time it is on, converted to hours. This tells you how much energy has been wasted, in kilowatt hours. You then need to find out the cost per kilowatt hour charged by your utility.
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How much energy do you waste leaving on lights?
It depends on how many lights you leave on and how bright they are. Just think of it as leaving the water running or something.
When you leave your lights on when you are not home how much electricity do you waste?
What ever the wattage rating stated on the light is, this is the amount of energy you are using.
Is it better to leave the room with light on or to switch it off?
It depends on the type of light. A fluorescent light takes a lot of energy to start up, and almost nothing to stay on. So leave the Fluoro on. A normal light bulb doesn' matter how many times you turn it on and off, it is cheaper to turn on and off. If you're leaving the room for more than a few seconds, you're wasting power leaving any lights on, other than possibly large fluorescents with ballast starters. However, all lighting burns out faster if you cycle them on and off more. Would you rather waste energy with more light than you need, or waste energy having to replace bulbs more often?
Does geothermal energy leave waste?
No, geothermal energy has no waste.
In what form does energy leave cellular respiration?
It comes as chemical energy. Also it leaves as same
How can you conserve energy at home?
You can replace your incandescent light bulbs with compact fluorescent bulbs, turn off the light when you leave the room. You can turn the water off when your brushing your teeth, and take faster showers.
How does saving energy help your environment?
dont leave lights and electronics on
How saving energy helps your environment?
dont leave lights and electronics on
How can you save electricity?
Don't leave electrical appliances on standby.Electric tumble dryers are commonly one of the biggest energy users in the home after the air conditioner or the fridge/freezer. Tumble dryers use a lot of electricity when switched on so it is best to use them as infrequently as possible. You can avoid using the dryer so often by line-drying clothes in the fresh air outside the home whenever possible, or by using an indoor non-electric clothes drying frame when the weather is bad.Always turn the lights off when you leave a room.Use solar powered lights outside - there are a number of different solar powered lights available for use in the garden. These lights are highly energy efficient and convenient as they do not require external extension leads or special electric fittings. These lights contain solar cells which convert the sun's energy into electricity. They charge up during the daylight and light up as it gets dark. They are not usually hugely bright but are less intrusive than main-powered electric lights and look nice in the flowerbeds.Use Compact Fluorescent Lamps! They only use 1/5 of the power to give the same light output.For more information see the answer to the Related Question shown below: "What savings can a CFL or Compact Fluorescent Lamp give?".
What does it mean to be energy conscious?
To use energy wisely and not waste it.For Example, Do not leave your lights on and you will save money AND energy.
What are the advantages of using compact fluorescent light bulbs?
Some advantages are that CFL light bulbs last longer, so in the long run they are cheaper. They also use less energy. They are very versatile since they come in different shapes they can fit into almost any fixture.CFL or Compact Florescent Lights are a lot more energy efficient. They emit a lot more light and a lot less heat and last a lot longer. a 23 watt cfl is equal to a 100 watt incandescent in light output.If you pay 10 cents per kwh for electricity then a 100 watt bulb left on all the time will cost about $88 per year, multiply that by all the lights you leave on whereas a cfl of the same brightness would cost about 1/4 of that or around $22 per year
How much energy do you waste leaving on lights?
It depends on how many lights you leave on and how bright they are. Just think of it as leaving the water running or something.
How much energy do you waste in 1 day?
It depends. The longer you leave the lights on and the more you flush the toilet, the more energy consumption you will have.
What are ways to conserve energy?
When you leave a room, switch of the lights, when a computer is not in use turn it off, use high compact florescence bulbs-they last a lot longer than regular bulbs too use cfls that look like soft serve ice cream
What is an example of energy conservation driving a car alone into the city at rush hour leaving lights on whenever you leave a room leaving your home uninsulated?
None are examples of energy conservation. Examples of energy conservation are: carpooling or taking public transportation to work, turning lights off when you leave a room, and insulating your home.
When you leave your lights on when you are not home how much electricity do you waste?
What ever the wattage rating stated on the light is, this is the amount of energy you are using.
What are 3 things you can do to reduce electricity use in your home?
1. Unplug appliances that you are not using, such as phone chargers and kitchen items. 2. Turn off lights when you leave a room; there is no need for lights to be on when no one is there. 3. Use energy wisely, meaning don't leave the television on if you aren't really watching it or don't heat the oven for longer than it has too. Alternatively: 1. Use energy saving light bulbs (fluorescent). 2. Replace your fridge and air condition units to high efficiency models. 3. Insulate the walls of your home to save on heating and cooling.
