- This topic has 280 replies, 26 voices, and was last updated 14 years, 3 months ago by
svelte.
-
AuthorPosts
-
May 15, 2010 at 5:18 PM #551473May 15, 2010 at 9:59 PM #550539
LuckyInOC
ParticipantWhy would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_lawLet’s change it a little bit:
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. A bit like flu and Briansd1.
[quote=Hatfield][quote=LuckyInOC][quote=sdduuuude]Very unlikely a heating element, but not because it is a short circuit. That’s what heating elements are – a short circuit.[/quote]
I disagree. A short circuit has O hms or almost 0 ohms resistance. A heating element has lots of resistance to produce heat. Opposite ends of the electrical resistance spectrum.
Lucky In OC[/quote]If a heating element had lots of resistance, it wouldn’t generate lots of heat. The more current that flows, the more heat that can be generated. But current drops as resistance increases. Therefore a heating element must have relatively low (but nonzero) resistance. Ohm’s law.
The reason it’s not a heating element, as someone else pointed out, is that there are no insulators suspending the crazy wire thing. If you connected those two big nubs to juice, electricity would take the easiest path which would be that big metal frame. If this was a heating element it would be constructed in such a way that the electricity would be forced to flow through all that convoluted wirework. But it’s not, which is why I claim it isn’t.
My money is on a rack of some sort, or the frame for holding a filter element.
*passes object to JoAnn Worley*[/quote]
“RESISTIVE HEATING: The generation of heat by electric conductors carrying current. The degree of heating for a given current is proportional to the electrical resistance of the conductor. If the resistance is high, a large amount of heat is generated, and the material is used as a resistor rather than as a conductor. See also Electrical resistance.
In addition to having high resistivity, heating elements must be able to withstand high temperatures without deteriorating or sagging.”
http://www.answers.com/topic/resistance-heatingO ohms across a circuit will cause a ‘dead short’ or unlimited current flow. As you put it: ‘the easiest path’. Of course: “The easiest path is that of least resistance”.
By the way, I am the one that pointed out there are no insulators…
*passes object to Betty White*
May 15, 2010 at 9:59 PM #550649ParticipantWhy would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_lawLet’s change it a little bit:
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. A bit like flu and Briansd1.
[quote=Hatfield][quote=LuckyInOC][quote=sdduuuude]Very unlikely a heating element, but not because it is a short circuit. That’s what heating elements are – a short circuit.[/quote]
I disagree. A short circuit has O hms or almost 0 ohms resistance. A heating element has lots of resistance to produce heat. Opposite ends of the electrical resistance spectrum.
Lucky In OC[/quote]If a heating element had lots of resistance, it wouldn’t generate lots of heat. The more current that flows, the more heat that can be generated. But current drops as resistance increases. Therefore a heating element must have relatively low (but nonzero) resistance. Ohm’s law.
The reason it’s not a heating element, as someone else pointed out, is that there are no insulators suspending the crazy wire thing. If you connected those two big nubs to juice, electricity would take the easiest path which would be that big metal frame. If this was a heating element it would be constructed in such a way that the electricity would be forced to flow through all that convoluted wirework. But it’s not, which is why I claim it isn’t.
My money is on a rack of some sort, or the frame for holding a filter element.
*passes object to JoAnn Worley*[/quote]
“RESISTIVE HEATING: The generation of heat by electric conductors carrying current. The degree of heating for a given current is proportional to the electrical resistance of the conductor. If the resistance is high, a large amount of heat is generated, and the material is used as a resistor rather than as a conductor. See also Electrical resistance.
In addition to having high resistivity, heating elements must be able to withstand high temperatures without deteriorating or sagging.”
http://www.answers.com/topic/resistance-heatingO ohms across a circuit will cause a ‘dead short’ or unlimited current flow. As you put it: ‘the easiest path’. Of course: “The easiest path is that of least resistance”.
By the way, I am the one that pointed out there are no insulators…
*passes object to Betty White*
May 15, 2010 at 9:59 PM #551136ParticipantWhy would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_lawLet’s change it a little bit:
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. A bit like flu and Briansd1.
[quote=Hatfield][quote=LuckyInOC][quote=sdduuuude]Very unlikely a heating element, but not because it is a short circuit. That’s what heating elements are – a short circuit.[/quote]
I disagree. A short circuit has O hms or almost 0 ohms resistance. A heating element has lots of resistance to produce heat. Opposite ends of the electrical resistance spectrum.
Lucky In OC[/quote]If a heating element had lots of resistance, it wouldn’t generate lots of heat. The more current that flows, the more heat that can be generated. But current drops as resistance increases. Therefore a heating element must have relatively low (but nonzero) resistance. Ohm’s law.
The reason it’s not a heating element, as someone else pointed out, is that there are no insulators suspending the crazy wire thing. If you connected those two big nubs to juice, electricity would take the easiest path which would be that big metal frame. If this was a heating element it would be constructed in such a way that the electricity would be forced to flow through all that convoluted wirework. But it’s not, which is why I claim it isn’t.
My money is on a rack of some sort, or the frame for holding a filter element.
*passes object to JoAnn Worley*[/quote]
“RESISTIVE HEATING: The generation of heat by electric conductors carrying current. The degree of heating for a given current is proportional to the electrical resistance of the conductor. If the resistance is high, a large amount of heat is generated, and the material is used as a resistor rather than as a conductor. See also Electrical resistance.
In addition to having high resistivity, heating elements must be able to withstand high temperatures without deteriorating or sagging.”
http://www.answers.com/topic/resistance-heatingO ohms across a circuit will cause a ‘dead short’ or unlimited current flow. As you put it: ‘the easiest path’. Of course: “The easiest path is that of least resistance”.
By the way, I am the one that pointed out there are no insulators…
*passes object to Betty White*
May 15, 2010 at 9:59 PM #551235ParticipantWhy would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_lawLet’s change it a little bit:
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. A bit like flu and Briansd1.
[quote=Hatfield][quote=LuckyInOC][quote=sdduuuude]Very unlikely a heating element, but not because it is a short circuit. That’s what heating elements are – a short circuit.[/quote]
I disagree. A short circuit has O hms or almost 0 ohms resistance. A heating element has lots of resistance to produce heat. Opposite ends of the electrical resistance spectrum.
Lucky In OC[/quote]If a heating element had lots of resistance, it wouldn’t generate lots of heat. The more current that flows, the more heat that can be generated. But current drops as resistance increases. Therefore a heating element must have relatively low (but nonzero) resistance. Ohm’s law.
The reason it’s not a heating element, as someone else pointed out, is that there are no insulators suspending the crazy wire thing. If you connected those two big nubs to juice, electricity would take the easiest path which would be that big metal frame. If this was a heating element it would be constructed in such a way that the electricity would be forced to flow through all that convoluted wirework. But it’s not, which is why I claim it isn’t.
My money is on a rack of some sort, or the frame for holding a filter element.
*passes object to JoAnn Worley*[/quote]
“RESISTIVE HEATING: The generation of heat by electric conductors carrying current. The degree of heating for a given current is proportional to the electrical resistance of the conductor. If the resistance is high, a large amount of heat is generated, and the material is used as a resistor rather than as a conductor. See also Electrical resistance.
In addition to having high resistivity, heating elements must be able to withstand high temperatures without deteriorating or sagging.”
http://www.answers.com/topic/resistance-heatingO ohms across a circuit will cause a ‘dead short’ or unlimited current flow. As you put it: ‘the easiest path’. Of course: “The easiest path is that of least resistance”.
By the way, I am the one that pointed out there are no insulators…
*passes object to Betty White*
May 15, 2010 at 9:59 PM #551513ParticipantWhy would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_lawLet’s change it a little bit:
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. A bit like flu and Briansd1.
[quote=Hatfield][quote=LuckyInOC][quote=sdduuuude]Very unlikely a heating element, but not because it is a short circuit. That’s what heating elements are – a short circuit.[/quote]
I disagree. A short circuit has O hms or almost 0 ohms resistance. A heating element has lots of resistance to produce heat. Opposite ends of the electrical resistance spectrum.
Lucky In OC[/quote]If a heating element had lots of resistance, it wouldn’t generate lots of heat. The more current that flows, the more heat that can be generated. But current drops as resistance increases. Therefore a heating element must have relatively low (but nonzero) resistance. Ohm’s law.
The reason it’s not a heating element, as someone else pointed out, is that there are no insulators suspending the crazy wire thing. If you connected those two big nubs to juice, electricity would take the easiest path which would be that big metal frame. If this was a heating element it would be constructed in such a way that the electricity would be forced to flow through all that convoluted wirework. But it’s not, which is why I claim it isn’t.
My money is on a rack of some sort, or the frame for holding a filter element.
*passes object to JoAnn Worley*[/quote]
“RESISTIVE HEATING: The generation of heat by electric conductors carrying current. The degree of heating for a given current is proportional to the electrical resistance of the conductor. If the resistance is high, a large amount of heat is generated, and the material is used as a resistor rather than as a conductor. See also Electrical resistance.
In addition to having high resistivity, heating elements must be able to withstand high temperatures without deteriorating or sagging.”
http://www.answers.com/topic/resistance-heatingO ohms across a circuit will cause a ‘dead short’ or unlimited current flow. As you put it: ‘the easiest path’. Of course: “The easiest path is that of least resistance”.
By the way, I am the one that pointed out there are no insulators…
*passes object to Betty White*
May 15, 2010 at 11:12 PM #550544sdduuuude
ParticipantYou have got to be f-ing kidding me.
[quote=LuckyInOC]Why would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_law
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. [/quote]
Uh. This is bass-ackwards and mis-quoted Wikipedia, giving the wrong equation for Ohm’s law. Wikipedia says (and every electrical engineer in the world knows) that
I = V / R.
Check the link and focus on the equation show in very large, bold type.
This means that
V = I * R
and
R = V / INOT NOT NOT (as you calculate)
R = I / VYou couldn’t have gotten this more wrong.
So, your last equations should result in a 1500 watt heater having resistance of 9.6 ohms, and a 1000 watt heater having a resistance of 14.4 ohm.
“Short circuit” is a relative term since nothing really has “0” resistance. Since it is pretty clear that you don’t know anything about practical electrical circuts (nice try changing Ohm’s law to suit your theory, though – that was bold), let me tell you that 14 ohms is pretty damn low.
Lower resistance means more current, means more heat.
Tell you what I’ll hook my dry body up to 120 volts and you hook your wet body up to 120 volts. (Wet bodies have lower resistance). We’ll see who gets hotter.
May 15, 2010 at 11:12 PM #550654ParticipantYou have got to be f-ing kidding me.
[quote=LuckyInOC]Why would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_law
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. [/quote]
Uh. This is bass-ackwards and mis-quoted Wikipedia, giving the wrong equation for Ohm’s law. Wikipedia says (and every electrical engineer in the world knows) that
I = V / R.
Check the link and focus on the equation show in very large, bold type.
This means that
V = I * R
and
R = V / INOT NOT NOT (as you calculate)
R = I / VYou couldn’t have gotten this more wrong.
So, your last equations should result in a 1500 watt heater having resistance of 9.6 ohms, and a 1000 watt heater having a resistance of 14.4 ohm.
“Short circuit” is a relative term since nothing really has “0” resistance. Since it is pretty clear that you don’t know anything about practical electrical circuts (nice try changing Ohm’s law to suit your theory, though – that was bold), let me tell you that 14 ohms is pretty damn low.
Lower resistance means more current, means more heat.
Tell you what I’ll hook my dry body up to 120 volts and you hook your wet body up to 120 volts. (Wet bodies have lower resistance). We’ll see who gets hotter.
May 15, 2010 at 11:12 PM #551141ParticipantYou have got to be f-ing kidding me.
[quote=LuckyInOC]Why would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_law
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. [/quote]
Uh. This is bass-ackwards and mis-quoted Wikipedia, giving the wrong equation for Ohm’s law. Wikipedia says (and every electrical engineer in the world knows) that
I = V / R.
Check the link and focus on the equation show in very large, bold type.
This means that
V = I * R
and
R = V / INOT NOT NOT (as you calculate)
R = I / VYou couldn’t have gotten this more wrong.
So, your last equations should result in a 1500 watt heater having resistance of 9.6 ohms, and a 1000 watt heater having a resistance of 14.4 ohm.
“Short circuit” is a relative term since nothing really has “0” resistance. Since it is pretty clear that you don’t know anything about practical electrical circuts (nice try changing Ohm’s law to suit your theory, though – that was bold), let me tell you that 14 ohms is pretty damn low.
Lower resistance means more current, means more heat.
Tell you what I’ll hook my dry body up to 120 volts and you hook your wet body up to 120 volts. (Wet bodies have lower resistance). We’ll see who gets hotter.
May 15, 2010 at 11:12 PM #551240ParticipantYou have got to be f-ing kidding me.
[quote=LuckyInOC]Why would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_law
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. [/quote]
Uh. This is bass-ackwards and mis-quoted Wikipedia, giving the wrong equation for Ohm’s law. Wikipedia says (and every electrical engineer in the world knows) that
I = V / R.
Check the link and focus on the equation show in very large, bold type.
This means that
V = I * R
and
R = V / INOT NOT NOT (as you calculate)
R = I / VYou couldn’t have gotten this more wrong.
So, your last equations should result in a 1500 watt heater having resistance of 9.6 ohms, and a 1000 watt heater having a resistance of 14.4 ohm.
“Short circuit” is a relative term since nothing really has “0” resistance. Since it is pretty clear that you don’t know anything about practical electrical circuts (nice try changing Ohm’s law to suit your theory, though – that was bold), let me tell you that 14 ohms is pretty damn low.
Lower resistance means more current, means more heat.
Tell you what I’ll hook my dry body up to 120 volts and you hook your wet body up to 120 volts. (Wet bodies have lower resistance). We’ll see who gets hotter.
May 15, 2010 at 11:12 PM #551518ParticipantYou have got to be f-ing kidding me.
[quote=LuckyInOC]Why would they call it resistive heating if it was based low resistance?
“The mathematical equation that describes this relationship is: V = I/R where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.”
http://en.wikipedia.org/wiki/Ohm’s_law
R = I/V same thing right?
If V (volts) is constant 120 volts.
and I (current in amps) is increased.
Then R (resistance) is also increased.Your typical resistive home heater is 1500w. At 120v , it is pulling 12.5 amps or 0.10427 ohms. Whereas, a 1000w heater at 120 volts is 8.3 amps or 0.0694 ohms. More heat, more resistance – Ohm’s law. [/quote]
Uh. This is bass-ackwards and mis-quoted Wikipedia, giving the wrong equation for Ohm’s law. Wikipedia says (and every electrical engineer in the world knows) that
I = V / R.
Check the link and focus on the equation show in very large, bold type.
This means that
V = I * R
and
R = V / INOT NOT NOT (as you calculate)
R = I / VYou couldn’t have gotten this more wrong.
So, your last equations should result in a 1500 watt heater having resistance of 9.6 ohms, and a 1000 watt heater having a resistance of 14.4 ohm.
“Short circuit” is a relative term since nothing really has “0” resistance. Since it is pretty clear that you don’t know anything about practical electrical circuts (nice try changing Ohm’s law to suit your theory, though – that was bold), let me tell you that 14 ohms is pretty damn low.
Lower resistance means more current, means more heat.
Tell you what I’ll hook my dry body up to 120 volts and you hook your wet body up to 120 volts. (Wet bodies have lower resistance). We’ll see who gets hotter.
May 15, 2010 at 11:20 PM #550549Participant[quote=hbuzz]I was just browsing grill accessories on Amazon when I saw this thingie: http://www.amazon.com/Outset-QC73-Basket-rosewood-handle/dp/B000GBLPP2/ref=pd_sim_ol_41
It has exactly the same design as the object in the original question. It’s used for grilling fish and such.[/quote]Holy Cow – you may have nailed it.
It was in the kitchen and looks identical.
Could be half of something that was designed to flex around fish or other fragile food for grilling.May 15, 2010 at 11:20 PM #550659Participant[quote=hbuzz]I was just browsing grill accessories on Amazon when I saw this thingie: http://www.amazon.com/Outset-QC73-Basket-rosewood-handle/dp/B000GBLPP2/ref=pd_sim_ol_41
It has exactly the same design as the object in the original question. It’s used for grilling fish and such.[/quote]Holy Cow – you may have nailed it.
It was in the kitchen and looks identical.
Could be half of something that was designed to flex around fish or other fragile food for grilling.May 15, 2010 at 11:20 PM #551146Participant[quote=hbuzz]I was just browsing grill accessories on Amazon when I saw this thingie: http://www.amazon.com/Outset-QC73-Basket-rosewood-handle/dp/B000GBLPP2/ref=pd_sim_ol_41
It has exactly the same design as the object in the original question. It’s used for grilling fish and such.[/quote]Holy Cow – you may have nailed it.
It was in the kitchen and looks identical.
Could be half of something that was designed to flex around fish or other fragile food for grilling.May 15, 2010 at 11:20 PM #551245Participant[quote=hbuzz]I was just browsing grill accessories on Amazon when I saw this thingie: http://www.amazon.com/Outset-QC73-Basket-rosewood-handle/dp/B000GBLPP2/ref=pd_sim_ol_41
It has exactly the same design as the object in the original question. It’s used for grilling fish and such.[/quote]Holy Cow – you may have nailed it.
It was in the kitchen and looks identical.
Could be half of something that was designed to flex around fish or other fragile food for grilling. -
AuthorPosts
- You must be logged in to reply to this topic.