How many watts does it take to do a certain task ? (need a

[Bob Myers]

"Chaos Master" <immortalizer171-usenet@yahoo.com.br> wrote in message
news:MPG.1bb2c6052844b20a9896cd@news.individual.net...

Andyb says:

A-Level (high school) text books often give a table like the one you
seem to
want - although not with 1 watt resolution. They usually illustrate the
idea with things like {light bulb, hair dryer, television, train}.......
Other than that try www.google.com

And this info can be found at device ratings, or computed from
voltage/current
ratings.

Yes, but be careful with that - the ratings on the labels are
often maximums, and don't represent the typical load
presented by the product in question. Add to that the
possibility that for many types of products, you'll have
the little matter of power factor to consider if all you're
doing is looking at the voltage/current specs.

Bob M.

 

[Bob Myers]

"CWatters" <colin.watters@pandoraBOX.be> wrote in message
news:CJf2d.247783$Yf2.12574781@phobos.telenet-ops.be...

1 horse = 7.5 men. Sounds about right.

Yes, but then 1/7.5 horses = 1 man. This may
or may not be correct, depending on the man and
the portion of the horse in question. Note especially
that certain classes of "man" (e.g., members of
Congress, or politicians in general), can often be
equated directly with certain parts of a horse...

Bob M.


>

 

[Bill Bowden]

h_arle/yNO.SPAMd_avidso/n@mailcity.com (George) wrote in message news:<41490950.9736450@news.east.earthlink.net>...

On Wed, 15 Sep 2004 01:05:34 GMT, "R. Steve Walz" <rstevew@armory.com
wrote:

George wrote:

I'm wondering if there's some sort of list out there, that lists the
number of watts, and what that number of watts can power.

1 watt powers a ?
2 watts power a ?
3
4
5
and so on.

Please advise, if such a list exists.

Maybe not a list of watts in numerical order but there
are lists of typical appliance power usages.
Here's one I found at:

http://www.eere.energy.gov/consumerinfo/factsheets/ec7.html

Here are some examples of the range of nameplate wattages for various
household appliances:

Aquarium = 50-1210 Watts
Clock radio = 10
Coffee maker = 900-1200
Clothes washer = 350-500
Clothes dryer = 1800-5000
Dishwasher = 1200-2400 (using the drying feature greatly increases
energy consumption)
Dehumidifier = 785
Electric blanket- Single/Double = 60 / 100
Fans
Ceiling = 65-175
Window = 55-250
Furnace = 750
Whole house = 240-750
Hair dryer = 1200-1875
Heater (portable) = 750-1500
Clothes Iron = 1000-1800
Microwave oven = 750-1100
Personal Computer
CPU - awake / asleep = 120 / 30 or less
Monitor - awake / asleep = 150 / 30 or less
Laptop = 50
Radio (stereo) = 70-400
Refrigerator (frost-free, 16 cubic feet) = 725
Televisions (color)
19" = 65-110
27" = 113
36" = 133
53"-61" Projection = 170
Flat Screen = 120
Toaster = 800-1400
Toaster Oven = 1225
VCR/DVD = 17-21 /20-25
Vacuum cleaner = 1000-1440
Water heater (40 gallon) = 4500-5500
Water pump (deep well) = 250-1100
Water bed (w/ heater, no cover) = 120-380

---------------
A Watt is a Joule/second. A Joule of kinetic energy is given to a
kilogram when it is accelerated so that it gains 1 meter per second
each second for a distance of a meter.

2 Joules would be 2 kilograqms, or 2 m/s, etc.

A J = (1 kg-m-m/s/s) and a W = (1 kg-m-m/s/s)/s = kg-m^2/s^3

There are lots more equivalencies that can be discerned directly from
the physics of the factor label metric system. TAKE PHYSICS!!

-Steve
--
-Steve Walz rstevew@armory.com ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public

Thanks to all who have provided me with meaningful answers that I can
ponder and look up further, to get more knowledge in the subject.

I have recently purchased what I feel is an excellent book, written
'at my level'. The book is: "Basic Electricity" by Van Valkenburgh,
Nooger & Neville, Inc.

I may come across something in the book I don't understand, and
therefore post my question(s) here.

I'm actually overwhelmed at the number of responses, and insightful
info, my thread generated.

Thanks,
George

 

[CWatters]

"George" <h_arle/yNO.SPAMd_avidso/n@mailcity.com> wrote in message
news:41490950.9736450@news.east.earthlink.net...

I have recently purchased what I feel is an excellent book, written
'at my level'. The book is: "Basic Electricity" by Van Valkenburgh,

wow there's a blast from the past. I remember Van Valkenburgh writing Degree
level books.