Appliance Output per Hour

[ldbk]

Hi there- I'm hoping someone can help me. I'm thinking of purchasing
a space heater with the following ratings

Amps - 12.6
Watts - 1500

I'm trying to find out the kw/hr it puts out. I'm assuming the kw are
1.5? When an appliance lists watts is it watts per hour? I'm not sure
how I get that watts or kw/hr. Bottom line I'm trying to obtain an
estimated cost per month of running this appliance 3 hrs/day, 7
days/week. If someone can help me understand how to get to the kw/hr
I'd really appreciate it!

 

[John Larkin]

Hi there- I'm hoping someone can help me. I'm thinking of purchasing
a space heater with the following ratings

Amps - 12.6
Watts - 1500

I'm trying to find out the kw/hr it puts out. I'm assuming the kw are
1.5? When an appliance lists watts is it watts per hour? I'm not sure
how I get that watts or kw/hr. Bottom line I'm trying to obtain an
estimated cost per month of running this appliance 3 hrs/day, 7
days/week. If someone can help me understand how to get to the kw/hr
I'd really appreciate it!

1500 watts is 1.5 kw. So every hour it uses 1.5 kwh (that's
dimensionally kwh, kilowatts * hours, not kw/hr). If electricity costs
you 10 cents per kwh, the heater will cost 15 cents per hour to run.

Check your electric bill to see your local cost per kwh.

Newspapers commonly refer to energy in kw/hr, because they all
graduated from journalism school.

John

 

[Michael A. Terrell]

1500 watts is 1.5 kw. So every hour it uses 1.5 kwh (that's
dimensionally kwh, kilowatts * hours, not kw/hr). If electricity costs
you 10 cents per kwh, the heater will cost 15 cents per hour to run.

Check your electric bill to see your local cost per kwh.

Newspapers commonly refer to energy in kw/hr, because they all
graduated from journalism school.

They don't graduate, they run out of money. Then the school gives
them a diploma to free up the seat for another paying customer.



--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[John Fields]

Hi there- I'm hoping someone can help me. I'm thinking of purchasing
a space heater with the following ratings

Amps - 12.6
Watts - 1500

I'm trying to find out the kw/hr it puts out. I'm assuming the kw are
1.5?

---
Yes. 'kilo' means "times 1000", so 1.5 kilowatts = 1.5kw * 1000 =
1500 watts.
---

When an appliance lists watts is it watts per hour? I'm not sure
how I get that watts or kw/hr.

---
Watts is the amount of work done in moving one coulomb's worth of
charge from one place to another in one second, i.e, 1 watt = 1
coulomb per second. So, a 1500 watt toaster burns 1500 coulombs per
second every second it's on.
---

Bottom line I'm trying to obtain an
estimated cost per month of running this appliance 3 hrs/day, 7
days/week. If someone can help me understand how to get to the kw/hr
I'd really appreciate it!

---
Energy is measured in watt-hours, not kilowatts per hour, so to get
how much energy you use you multiply the number of watts it uses
times how long it's been on, and then multiply that by your utility
company's rate.

For example, your appliance uses 1500 watts, (1.5kw) so if your
utility charges 10 cents per kilowatt hour, you'll be charged 15
cents for every hour your appliance is on. 3 hours a day every day
comes out to 90 hours for 30 day months, so at 15 cents per hour
it'll cost you $13.50 a month to run the appliance.

 

[John Fields]

---
Watts is the amount of work done in moving one coulomb's worth of
charge from one place to another in one second, i.e, 1 watt = 1
coulomb per second. So, a 1500 watt toaster burns 1500 coulombs per
second every second it's on.
---

 

[ldbk]

1500 watts is 1.5 kw. So every hour it uses 1.5 kwh (that's
dimensionally kwh, kilowatts * hours, not kw/hr). If electricity costs
you 10 cents per kwh, the heater will cost 15 cents per hour to run.

Check your electric bill to see your local cost per kwh.

Newspapers commonly refer to energy in kw/hr, because they all
graduated from journalism school.

John

Thank you! No more "/" in kwh. I did not graduate from journalism
school. :^)

 

[Gareth]

1500 watts is 1.5 kw. So every hour it uses 1.5 kwh (that's
dimensionally kwh, kilowatts * hours, not kw/hr). If electricity costs
you 10 cents per kwh, the heater will cost 15 cents per hour to run.

Does this heater have a thermostat? If it does, it could cost a bit
less since it may not actually be running all the time. Depends how
cold it is and how well insulated the room is.

Gareth

PS if you really want to look like you know what you are talking about,
it should be a capital W in kWh because watts are named after a person
(James Watt)

--

 

[John Larkin]

Does this heater have a thermostat? If it does, it could cost a bit
less since it may not actually be running all the time. Depends how
cold it is and how well insulated the room is.

Gareth

PS if you really want to look like you know what you are talking about,
it should be a capital W in kWh because watts are named after a person
(James Watt)

Sorry, but I don't care how I look.

John

 

[Roger Dewhurst]

Hi there- I'm hoping someone can help me. I'm thinking of purchasing
a space heater with the following ratings

Amps - 12.6
Watts - 1500

I'm trying to find out the kw/hr it puts out. I'm assuming the kw are
1.5? When an appliance lists watts is it watts per hour? I'm not sure
how I get that watts or kw/hr. Bottom line I'm trying to obtain an
estimated cost per month of running this appliance 3 hrs/day, 7
days/week. If someone can help me understand how to get to the kw/hr
I'd really appreciate it!

The watt or kilowatt is a measure of energy at an instant of time. Watt
seconds, or joules, or kilowatt hours are a measure of power or work. You
pay for power, not for energy. There is no such unit as kilowatts per hour!

R

 

[Roger Dewhurst]

Hi there- I'm hoping someone can help me. I'm thinking of purchasing
a space heater with the following ratings

Amps - 12.6
Watts - 1500

I'm trying to find out the kw/hr it puts out. I'm assuming the kw are
1.5? When an appliance lists watts is it watts per hour? I'm not sure
how I get that watts or kw/hr. Bottom line I'm trying to obtain an
estimated cost per month of running this appliance 3 hrs/day, 7
days/week. If someone can help me understand how to get to the kw/hr
I'd really appreciate it!

Get yourself a copy of "Dictionary of Quantities and Units" by J B Drazil
(Pub = Leonard Hill, ISBN = 0 24944092). It is invaluable for this sort of
problem.

R

 

[John Larkin]

The watt or kilowatt is a measure of energy at an instant of time.

You can't measure energy at an instant in time. Well, maybe potential
energy. Energy is a time integral.

Watt
seconds, or joules, or kilowatt hours are a measure of power or work. You
pay for power, not for energy.

Joules or kwh are measures of energy, not power. And you pay for
energy, not for power.

There is no such unit as kilowatts per hour!

Kilowatts per hour is a legitimate engineering unit, but it's not
energy.

John

 

[jasen]

The watt or kilowatt is a measure of energy at an instant of time. Watt
seconds, or joules, or kilowatt hours are a measure of power or work. You
pay for power, not for energy. There is no such unit as kilowatts per hour!

you've got work and power swapped round.


It's only called a "power bill" colloquially,

Bye.
Jasen

 

[Gareth]

Sorry, but I don't care how I look.

John

John,

I meant that for the OP's information. I wasn't intending to criticise
your post, and I'm sorry if I gave that impression.

I know that you know what you are talking about.

Gareth