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TV Heat Output.. Plasma VS LCD VS LED VS DLP - Page 3  

post #61 of 78
6/20/11 at 5:06am
Best we get the thread back on topic please: OT posts, including mine, will be deleted soon

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post #62 of 78
6/20/11 at 5:18am
Sorry Mark, I wasn't intending to be disruptive.

Back on topic, I think we can safely agree that led lcd by far emits the least amount of heat, with plasma emitting the most by a relatively significant margin.
post #63 of 78
6/20/11 at 6:55am
As a rule of thumb, CCFL uses twice as much as LED and plasma twice as much as CCFL assuming same size.

But "twice" is relative. 5 years ago 50" plasma is >600W peak but now <300W peak, so in terms of savings in $ or heat may not mean much nowadays PERSONALLY, unless u are a government with 10m households to manage on power demand, hence the california energy bill.
post #64 of 78
6/20/11 at 9:02am
Quote:
Originally Posted by specuvestor View Post

As a rule of thumb, CCFL uses twice as much as LED and plasma twice as much as CCFL assuming same size.

But "twice" is relative. 5 years ago 50" plasma is >600W peak but now <300W peak, so in terms of savings in $ or heat may not mean much nowadays PERSONALLY, unless u are a government with 10m households to manage on power demand, hence the california energy bill.

The rules have been re written. One of the biggest gains that seems to have gone unnoticed or at least discussed that much is Panasonic has become very efficient with their plasma TVs. The new 55" vt30 and gt30 sets put out approximately 106 and 109 watts while the Sony hx929 is rated at around 100 watts in the same size. The Samsung's are in the lower to mid 80's. Monthly power cost difference is about $.20 more over the Sony and about $.50 more over the Samsung's per month. With those sort of numbers the heat difference would be negligible.

http://www.crutchfield.com/S-f8NJP5Q.../TV-power.html
post #65 of 78
6/20/11 at 12:03pm
I cannot speak to the specific consumption figures Crutchfield listed, but I can say that in at least one review of the Panasonic, it was noted that the low-energy setting was too dim for anyone to really be happy with it. I'm guessing that's a contributing factor in how Panasonic pulled off those ~110w figures for 55" sets. That said, what I can't tell you is whether you really need to go to 1.5x that or 2x that to get bright even. Certainly, you don't need to go to 4x, say, the Sony which tested out at 100w (and might also not really be entirely satisfying at 100w).
post #66 of 78
6/20/11 at 5:52pm
I was talking about plasma "peak" and many cited crutchfield which i remain skeptical. I agree with rogo that they had to do some modifications to the modes for low brightness to claim that power consumption.
post #67 of 78
6/20/11 at 6:45pm
Not sure how you can create an opinion poll that questions scientific fact. We can't have opinions about whether gravity exists or whether the sun will set in the west.

There is no question that LED sets have the lowest power consumption and generate the lowest amount of heat (turn the backlight down all the way and it gets even better), and plasmas operate in the other end of the spectrum. A poll asking an opinion about this is pretty ludicrous. That's MY opinion.

I grant you that plasmas have become more efficient than they were. But they have an insurmountable gap to close to rival LEDs, and never will. The nicest Hyundai on the lot will never rival a Mercedes, either. I guess if you turn the brightness and contrast down on a plasma to where you can't see the picture and raise the levels to torch mode on a LED you might halve that gap. But I don't see plasmas ever realistically reaching the 50w range like some LED sets do when the backlight is turned down most of the way (which is usually preferable).

And that heat difference has hidden costs. It may cost only X dollars more a year to run a plasma, but the heat it generates costs another X dollars a year--to run the air conditioner.
post #68 of 78
6/20/11 at 6:48pm
The fact that ANYONE picked plasma over an LED is just sad lol
post #69 of 78
6/21/11 at 4:41am
Quote:
Originally Posted by TomCat View Post
Not sure how you can create an opinion poll that questions scientific fact. We can't have opinions about whether gravity exists or whether the sun will set in the west.
Which is what I wrote in Post 37:

A poll is meant to collect public opinion: Do you prefer blondes or brunettes? A survey asks for objective data: How many people live in your house? A test is meant to check the knowledge of facts: What is longer - a foot, 18 inches or a yard?

Any discussion about power consumption has two levels: personal (can I afford it or will I be comfortable) and public. Doubling from 150 to 300 watts may personally be no problem. To the power grid and the generating stations it's a disaster.

I read somewhere that the power needed to run all these servers that support the internet (used mainly to deliver high quality porn at high speed) accounts for 2 to 3% of the total power consumed in the US, and growing. To keep the operating expenses low, these server stations, many as large as a Wal-mart store, are located where cheap and dirty coal-powered energy is available. So much for that green, paper-less, high tech.
post #70 of 78
6/21/11 at 5:35am
^^ That's what they tried to do in Iceland before it burst into financial flames. It is cold and has cheap thermal power

Quote:
Originally Posted by TomCat View Post
Not sure how you can create an opinion poll that questions scientific fact. We can't have opinions about whether gravity exists or whether the sun will set in the west.
...

A poll asking an opinion about this is pretty ludicrous. That's MY opinion.
Not sure if you realised this enigma you created...

Quote:
Originally Posted by TomCat View Post
I grant you that plasmas have become more efficient than they were. But they have an insurmountable gap to close to rival LEDs, and never will. The nicest Hyundai on the lot will never rival a Mercedes, either.
You probably could drive a Merz 500 to 200miles/hr and the Hyundai bites the dust, but how often or pragmatic is that gonna happen. Would trying to cover the gap be even a priority? Am not a car specialist so just thinking logically... and applying that to when I say it is not as big an issue nowadays for plasma/LCD heat difference on a personal basis.
post #71 of 78
6/21/11 at 10:26am
Quote:
Originally Posted by ramazur View Post

Which is what I wrote in Post 37:

A poll is meant to collect public opinion: Do you prefer blondes or brunettes? A survey asks for objective data: How many people live in your house? A test is meant to check the knowledge of facts: What is longer - a foot, 18 inches or a yard?

Any discussion about power consumption has two levels: personal (can I afford it or will I be comfortable) and public. Doubling from 150 to 300 watts may personally be no problem. To the power grid and the generating stations it's a disaster.

I read somewhere that the power needed to run all these servers that support the internet (used mainly to deliver high quality porn at high speed) accounts for 2 to 3% of the total power consumed in the US, and growing. To keep the operating expenses low, these server stations, many as large as a Wal-mart store, are located where cheap and dirty coal-powered energy is available. So much for that green, paper-less, high tech.

Please use common sense.... If you know of a way in the AVS forum to do a survey then enlighten us all! Your hung up on the poll vs. survey "words" when the tools available in this forum to collect users choices is called a poll which is NOT the point of the thread!
post #72 of 78
6/21/11 at 10:35am
Quote:
Originally Posted by TomCat View Post

Not sure how you can create an opinion poll that questions scientific fact. We can't have opinions about whether gravity exists or whether the sun will set in the west.

There is no question that LED sets have the lowest power consumption and generate the lowest amount of heat (turn the backlight down all the way and it gets even better), and plasmas operate in the other end of the spectrum. A poll asking an opinion about this is pretty ludicrous. That's MY opinion.

I grant you that plasmas have become more efficient than they were. But they have an insurmountable gap to close to rival LEDs, and never will. The nicest Hyundai on the lot will never rival a Mercedes, either. I guess if you turn the brightness and contrast down on a plasma to where you can't see the picture and raise the levels to torch mode on a LED you might halve that gap. But I don't see plasmas ever realistically reaching the 50w range like some LED sets do when the backlight is turned down most of the way (which is usually preferable).

And that heat difference has hidden costs. It may cost only X dollars more a year to run a plasma, but the heat it generates costs another X dollars a year--to run the air conditioner.

First see post above as to why it is a poll and think about your post.

Second Not every LED beats every LCD etc but overall we agree.

Third - you are over exaggerating the heat but i'll play along. So in all of the colder climates would we not save X on oil/gas etc?
post #73 of 78
6/21/11 at 11:04am
Quote:
Originally Posted by ebernazz View Post

Please use common sense.... If you know of a way in the AVS forum to do a survey then enlighten us all! Your hung up on the poll vs. survey "words" when the tools available in this forum to collect users choices is called a poll which is NOT the point of the thread!

If after all this you think that I am hung up on "poll vs. survey" then it's hopeless but I will try one more time.

This "poll" is neither a poll nor a survey. It's a knowledge test just like asking me to "vote" which is longer - a foot, 18 inches or a yard. Nobody ever called a test like this a poll or a survey.

Because one cannot vote about physical facts like power consumption, there no room and reason for knowledge tests such is this one. Are we clear finally?

BTW, TomCat, just as I, is 100% correct on this subject.
post #74 of 78
6/21/11 at 11:43am
Most of US know its LED. Some do not (as evident by this poll)!

Since this site does not do tests or opinion surveys the OP used a poll. PERFECTLY reasonable and its sad you can not see this. It shows that the majority know its LED and it is easy to calculate the percent that got it correct. It also shows some have no clue which we can also quantify in percents BECAUSE we have this poll.
post #75 of 78
6/21/11 at 12:18pm
Quote:
Originally Posted by ramazur View Post

If after all this you think that I am hung up on "poll vs. survey" then it's hopeless but I will try one more time.

This "poll" is neither a poll nor a survey. It's a knowledge test just like asking me to "vote" which is longer - a foot, 18 inches or a yard. Nobody ever called a test like this a poll or a survey.

Because one cannot vote about physical facts like power consumption, there no room and reason for knowledge tests such is this one. Are we clear finally?

BTW, TomCat, just as I, is 100% correct on this subject.

If "one cannot vote about physical facts" why did my technical physics (calculus, linear algebra etc etc) professor waste all of my time with the mid term and final. I should have sent them to you to explain. A multiple choice math SAT is a perfect example where you "vote" for the correct answer (fact) and by measuring it in a test ("poll") you can analyze the results.
post #76 of 78
6/21/11 at 2:09pm
And I thought the discussion on EM energy absorption by matter was off topic...
post #77 of 78
6/21/11 at 4:22pm
Quote:
Originally Posted by ebernazz View Post

If "one cannot vote about physical facts" why did my technical physics (calculus, linear algebra etc etc) professor waste all of my time with the mid term and final. I should have sent them to you to explain. A multiple choice math SAT is a perfect example where you "vote" for the correct answer (fact) and by measuring it in a test ("poll") you can analyze the results.

Because he didn't ask you to "vote". He asked you to give him the correct anwers because it was a TEST. AVS does not do TESTS. A TEST, by definition, is an activity where the TESTER already knows the answers. A POLL or a SURVEY is done because those who conduct them DO NOT KNOW the answers but would like to. If they did, they wouldn't bother.

Can somebody help me here?
post #78 of 78
6/21/11 at 4:27pm
thank you
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