Calculating power consumption
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Pollution getting to you ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Nishant Sivakumar wrote:
We bought an Air Purifier (Holmes) yesterday
I never knew that those things actally work.
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan
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Pollution getting to you ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
I am wondering the same, I have lived in the same city for more than 7 years and never had any pollution related problems. Plus I have not known that the Air Purifiers make a difference.
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)I always view documentation with a bit of suspicion. It very well could have been correct at some point in time but, may or may not be totally accurate when the unit went into production. The simplest way to know how much electricity the unit is using is to put an amp meter (also known as an ammeter) on the line and measure it. For occasional use you can get an inexpensive one at places like radio shack or some other such electronics hobby outlet. If you are a perfectionist buy a Fluke brand meter but the price is pretty steep on those. Test the unit at different settings, if appropriate, and note the measurements. Then you can use the simple formula (as Ravi mentioned in his reply) W = volts X amps. You will be charged in Kilowatt hours so you can figure out how many watts you will use in a day at the setting you would like and determine the cost to operate the unit. :cool:
I'm on-line therefore I am. JimmyRopes
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Here's another one for you. The GIMPS site mentions that running a distributed (or any) program 24/7 also increases your power bill. I'm curious to know if anyone has a percentage on that? I leave both my desktop and laptop running continuously, but I don't have the old bills to compare with.
"Religion is assurance in numbers." - Bassam Abdul-Baki Web - Blog - RSS - Math - BM
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Nish, also check out the Oreck[^] model(s). The inventor claims his is the only one that *really* works. Dunno how much of that is marketing, but Oreck has been in business for a long time and is pretty well regarded. /ravi
My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)AIR CLEANERS: EVEN THE MOST EFFECTIVE COULD BE A QUESTIONABLE INVESTMENT I recommend you to read the following article in consumer reporst: http://www.consumerreports.org/cro/cu-press-room/pressroom/eng0510air.htm?resultPageIndex=1&resultIndex=7&searchTerm=oreck[^]
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan
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We bought an Air Purifier (Holmes) yesterday, and its manual says it can be left on permanently. But I am a little concerned about its power consumption - I mean if it's 400W or something I don't want to leave it on 24 hours a day. Unfortunately it doesn't mention power consumption anywhere on it :-( I checked the manual, the specifications, searched their website, searched the body of the equipment etc. I did find the following info : 120 V, 60 Hz, 1.1 Amps AC only Now using those bits of data, is there some formula to calculate the power consumption? Or is that indeterminate? Thanks in advance.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Nishant Sivakumar wrote:
Now using those bits of data, is there some formula to calculate the power consumption?
Not really. You can calculate the VA rating (voltage * current), but the actual power consumption depends on the power factor of the equipment (1.0 for a perfectly noninductive circuit, but in practice is almost always less than 1.0). However, given the figures you quoted, I'd expect the power consumption to be somewhere around 150W.
Ryan
"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
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Pollution getting to you ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
Christian Graus wrote:
Pollution getting to you ?
No - I wanted to get rid of cooking odors.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Thanks Ravi.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
I always view documentation with a bit of suspicion. It very well could have been correct at some point in time but, may or may not be totally accurate when the unit went into production. The simplest way to know how much electricity the unit is using is to put an amp meter (also known as an ammeter) on the line and measure it. For occasional use you can get an inexpensive one at places like radio shack or some other such electronics hobby outlet. If you are a perfectionist buy a Fluke brand meter but the price is pretty steep on those. Test the unit at different settings, if appropriate, and note the measurements. Then you can use the simple formula (as Ravi mentioned in his reply) W = volts X amps. You will be charged in Kilowatt hours so you can figure out how many watts you will use in a day at the setting you would like and determine the cost to operate the unit. :cool:
I'm on-line therefore I am. JimmyRopes
Thanks Jimmy - I just wanted a rough estimate.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Here's another one for you. The GIMPS site mentions that running a distributed (or any) program 24/7 also increases your power bill. I'm curious to know if anyone has a percentage on that? I leave both my desktop and laptop running continuously, but I don't have the old bills to compare with.
"Religion is assurance in numbers." - Bassam Abdul-Baki Web - Blog - RSS - Math - BM
Egad! My desktop and laptop are on all the time too.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Nishant Sivakumar wrote:
We bought an Air Purifier (Holmes) yesterday
I never knew that those things actally work.
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan
Rama Krishna Vavilala wrote:
I never knew that those things actally work.
They don't :-(
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Nish, also check out the Oreck[^] model(s). The inventor claims his is the only one that *really* works. Dunno how much of that is marketing, but Oreck has been in business for a long time and is pretty well regarded. /ravi
My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com
Thanks Ravi - the one I bought wasn't effective at all. I'll have to return it I guess. I'll see if Oreck is available here.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Nishant Sivakumar wrote:
Now using those bits of data, is there some formula to calculate the power consumption?
Not really. You can calculate the VA rating (voltage * current), but the actual power consumption depends on the power factor of the equipment (1.0 for a perfectly noninductive circuit, but in practice is almost always less than 1.0). However, given the figures you quoted, I'd expect the power consumption to be somewhere around 150W.
Ryan
"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
Ryan Binns wrote:
However, given the figures you quoted, I'd expect the power consumption to be somewhere around 150W.
Thanks - at that rate, I don't want to leave it on 24 hours a day anyway.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Nish, also check out the Oreck[^] model(s). The inventor claims his is the only one that *really* works. Dunno how much of that is marketing, but Oreck has been in business for a long time and is pretty well regarded. /ravi
My new year's resolution: 2048 x 1536 Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com
Holy crap! That *is* expensive! Not sure if Smitha's gonna let me buy that one - and I myself don't want to spend that much on this. But they claim that their filter does not need changing. So maybe in the long run it may be cheaper.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
AIR CLEANERS: EVEN THE MOST EFFECTIVE COULD BE A QUESTIONABLE INVESTMENT I recommend you to read the following article in consumer reporst: http://www.consumerreports.org/cro/cu-press-room/pressroom/eng0510air.htm?resultPageIndex=1&resultIndex=7&searchTerm=oreck[^]
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan
Thanks Rama. I am going to return this - it was a waste of time :-(
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*) -
Christian Graus wrote:
Pollution getting to you ?
No - I wanted to get rid of cooking odors.
Regards, Nish
Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications. (*Sample chapter available online*)Use the range hood. And open a window. Or just open a window. Or just cook things that smell nice...
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Nishant Sivakumar wrote:
Now using those bits of data, is there some formula to calculate the power consumption?
Not really. You can calculate the VA rating (voltage * current), but the actual power consumption depends on the power factor of the equipment (1.0 for a perfectly noninductive circuit, but in practice is almost always less than 1.0). However, given the figures you quoted, I'd expect the power consumption to be somewhere around 150W.
Ryan
"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
You could go out and look at your meter, leave the thing on for a whole day and write down what you used, then turn it off for a whole day and compare the usage. The effeciency of your line and other factors may make it use more power than the actual rating. If you average your 'normal' usage over 24 hours, you may be able to get a good estimate of the difference in cost - I suspect it's the cost difference you want to know, not the power usage. If it costs you 100 bucks a month to run, it may not be worth it, but if it only costs you 2 dollars to run it all month, then it's probably worth it. Depending on the brand, some of the air purifiers actually are pretty good, but something often overlooked is that homes with a central air conditioner and heater already have a method of filtering the air. It won't make it smell like ozone in your house, but changing your furnace filter can help a lot with the general air pollution. For emergent conditions like cooking odors, you need to address that problem while the situation is happening, like with a good stove hood that empties to the outside air. Air purifiers aren't designed for that.
"Quality Software since 1983!"
http://www.smoothjazzy.com/ - see the "Programming" section for (freeware) JazzySiteMaps, a simple application to generate .Net and Google-style sitemaps!