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| Member |
Propane burns pretty clean, doesn't it? Only have it on for short times. | |||
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| Ignored facts still exist |
I'm going to go out on a limb and say that he meant the fan is on the order of maybe 20 or 30 watts while the heating element is like 1500 watts. Yes, simple physics says the fan produces heat, obviously, but not at the same magnitude as the heating element. Point is, it doesn't matter if it's one of those oil heater things, a typical element with a fan Walmart special, or a hair dryer, 1500W is 1500W and will heat the room the same. I really don't see the need to say, "but the fan adds 20 or 30 watts too." . | |||
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Ammoholic |
You saying that including heat from circuit boards and fan coils it still exactly matches w to btu? Jesse Sic Semper Tyrannis | |||
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Member |
He’s saying that due to entropy, all energy, including the energy to run the fan and circuits, will become heat and should be included in the heater’s output. Demand not that events should happen as you wish; but wish them to happen as they do happen, and you will go on well. -Epictetus | |||
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| Member |
Yep, watts is watts. | |||
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His Royal Hiney |
I bought this off Amazon. It does work very well in heating up big rooms. There's low and high. But there's also an eco mode where I dial what temperature I want and it shuts off when it gets to that and turns on again if it goes below. PELONIS PHTPU1501 Ceramic Tower 1500W Indoor Space Heater with Oscillation "It did not really matter what we expected from life, but rather what life expected from us. We needed to stop asking about the meaning of life, and instead to think of ourselves as those who were being questioned by life – daily and hourly. Our answer must consist not in talk and meditation, but in right action and in right conduct. Life ultimately means taking the responsibility to find the right answer to its problems and to fulfill the tasks which it constantly sets for each individual." Viktor Frankl, Man's Search for Meaning, 1946. | |||
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Member |
What happened to the made in usa eheat envi 500w heaters? "Wrong does not cease to be wrong because the majority share in it." L.Tolstoy "A government is just a body of people, usually, notably, ungoverned." Shepherd Book | |||
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| That rug really tied the room together.  |
So you really need 12 gauge wiring and a 20 amp breaker to safely run one of these 1500 watt heaters? We have one but we only use it to warm up the bathroom for morning showers on extremely cold days, when it gets down to 35-40F outside. ______________________________________________________ Often times a very small man can cast a very large shadow | |||
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| Member |
Because of this thread, I have turned my space heater down from Hi to Lo just to be on the safe side. | |||
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| Ammoholic |
No a 15a dedicated circuit is fine, as long as there is no other load on the circuit. If you're using it in a bathroom of a house built after 2000 or so (depending on local code adaptation), then your bathroom is likely on a 20a circuit dedicated for bathroom outlets only, so you're perfectly safe if that's the case. Jesse Sic Semper Tyrannis | |||
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| Ammoholic |
Really? So if there was a hypothetical unit with a 750w element and 750w fan on a space heater it would put out same heat as one with a 1,500w element and very small fan? Jesse Sic Semper Tyrannis | |||
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eh-TEE-oh-clez |
I think from a purely newtonian physics standpoint, yes. The air molecules being pushed around by the fan will eventually slow down and come to a stop by bouncing off of other air molecules and transferring it's kinetic energy. Kinetic energy, down at the molecular level is perceived as "heat". If you circulated a 1500w fan in a perfectly insulated box, you would get exactly the same amount as energy in the box as 1500w heating element. The laws of thermodynamics says that energy cannot be created or destroyed. If you added energy to the system, it's in there. While the air is moving, it's kinetic energy, but as the air shows down, that kinetic energy is converting to heat ("friction"). That's all theoretical. In practice, 1500w of fan power would be terribly uncomfortable. You probably wouldn't notice that the air was getting warmer over the noise and being pushed around. | |||
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Nullus Anxietas |
I nearly >< replied to Excam_Man with the same challenge as did Skins, then I thought "but Newtonian physics..." and thought it best just to let it go  "America is at that awkward stage. It's too late to work within the system,,,, but too early to shoot the bastards." -- Claire Wolfe "If we let things terrify us, life will not be worth living." -- Seneca the Younger, Roman Stoic philosopher | |||
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| Ammoholic |
That's interesting. I was thinking converting the electricity into motion would have some affect, but what you're saying makes sense to someone who's furthest physics class was either physics II or physics 101. Jesse Sic Semper Tyrannis | |||
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Member |
I remember reading a Marilyn Vos Savant in Parade magazine years ago. She said if you put an oscillating fan in a closed room, the temperature will rise. It made sense. Year V | |||
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| Member |
I can not believe we are having this conversation. Why do motors have cooling fans? watts are watts Does a refrigerator add heat to the space around it? Does a light bulb put off heat? Does your tv add heat to the room? Body heat? Computers? Transformers? Energy doesn't just disappear. Why do most server rooms have their own cooling unit? Answer: because of all the electronics pulling current. Why do computer processors have cooling fins and cooling fans? Answer: energy used creates heat. | |||
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| Member |
Yes, that is correct. 14ga wire on 15 amp breaker 15 amp circuit loaded 80% is 12 amps 12ga wire on 20 amp breaker 20 amp circuit loaded 80% is 16 amps 1500 watt heater at 120 volts is pulling 12.5 amps Electrical heating circuits are to be loaded no more than 80%. So the first 15 amp (14ga) circuit is too small. | |||
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| Ammoholic |
For one, I had worked 36 of last 48 hours when I wrote it. It's not easy to conceptualize that if you turn energy/electricity to kinetic energy you still have the same amount of energy. Most people couldn't even understand the topic after reading a book on it. After reading Aeteocles comment, *light bulb* oh yeah if you introduce energy into a perfectly insulated system, the energy is in that system no matter what. Even the light waves from the LED lights on the unit. I'll plead stupid from lack of sleep. Jesse Sic Semper Tyrannis | |||
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Member |
This thread made me curious enough to pull out my multimeter. I have a small Sunbeam heater about 8" cube and it draws about 8 amps on low and 12 amps on high. If we use it, it's almost always on a 20A circuit in the bathroom, kitchen, or garage. | |||
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| Ignored facts still exist |
wondering, does the label on the heater say how much it draws? does that number match to what you measured? . | |||
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