How do I calculate the power required for an air conditioning unit?
408219
First determine size of AC needed for the room based on room size and occupants. If the room is expected to have several people, a meeting room for example a larger BTU capacity maybe needed.\n\nThe manufacturer of the AC will have the Power (watts) and Current (amps) for the given line voltage.\nKeep in mind that a larger AC unit may require 220VAC vs the typical 120VAC.\n\nThe power is the same for both, but the Current is about half for the 220VAC unit vs the 120VAC unit. The 220VAC unit is more reliable. But not all rooms have the 220VAC service, which could require a new branch circuit to be installed.\n\n1000 BTU/h is approximately 293 Watts\n \nFor BTU to Electric conversion check out the following link:
511307
well you need the power factor as well, From O/P KW to I/P KW by I/P KW = O/P KW / Efficiency; I/P KVA = I/P KW / power factor; I/P Current = I/P KVA / (V3 x 480); V3 is a 3 phase motor is used. so simple.
353934
I presume you're asking about an air conditioner.\n\nAir conditioners are rated in terms of the equivalent cooling capacity of tons of ice.   So, a one ton air conditioner can cool as much as a ton (2000 lbs) of ice melting in a 24 hour period.   A home air conditioning unit is typically in the range of 1-3 tons of capacity.  One ton is also equivalent to about 12000 BTUs (British Thermal Units) per hour of cooling.
750330
The unit would be the volt: http://physics.nist.gov/cuu/Units/units.html
936163
An air conditioner inverter is part of a microprocessor-controlled system to provide more precise temperature control and less on-off compressor cycling. The inverter works in conjunction with a variable-speed motor which drives the compressor. These systems are said to be more efficient at part load than older systems. The references will give you the general idea.
844099
It depends on the applied voltage.  Divide the voltage by the resistance which gives you the amperage.  Now multiply the amperage  with the voltage, and that is your wattage.\nW = V²/R\nThis is straight forward for DC; with AC things become a little more difficult, as because of the fluctuation of the voltage, the average is only .707 of the nominal voltage.
10379
you need to know how much energy the appliance consumes, and the cost of that energy.  for instance:\n\nif i use a space heater, i can look on the back and see it is rated at 1500 Watts.  if i use it for 2 hours, then i have used 2*1500 = 3000 Watt-hours or 3 kilowatt-hours of electrical energy to power the space heater.\n\nif the power company sells me electricity at 5 cents per kilowatt-hour, which is pretty typical, then running my space heater for 2 hours costs 15 cents.
162775
One kilowatt used over a one hour period is one kilowatt-hour.  To find out how many kilowatt hours an electrical appliance uses, look on the label (wattage - say 300 watts).  Divide that by 1000 to get kilowatts (0.3 kilowatts).  Now multiply it by the time you are going to use it for (say 20 minutes [6 kilowatt-minutes] - divided by 60 minutes in an hour [0.1 kilowatt-hours]).  The result should be the number of kilowatt-hours used.
448724
On nearly every appliance, there is a label, usually somewhere near where the AC cord enters the body of the appliance, or on the bottom, which states the electrical draw of the appliance.  If it is not listed in watts, then it will be listed in 'AMPS' or just 'A'.  To determine the wattage of an appliance if it gives you the draw in amps, you just need to do some simple math.  (amps) * (line voltage) = (watts).  So, if an appliance says that it draws 3 amps, and it is plugged into a standard north american outlet, which is 120 volts, then 3 * 120 = 360 watts.  If it is a 240v appliance, and draws 3 amps, then 3 * 240 = 720 watts.\n\nHope this helps...
942206
for all of the Amdahl Millenium mainframes the power consumption is between 8.1 - 13.4 KVA with a heat of 26.7 - 36.54 KBTU/HR \n\nKVA = A unit of apparent power, equal to 1,000 volt-amperes; the mathematical product of the volts and amperes in an electrical circuit.\n\nBTU =  The quantity of heat necessary to raise the temperature of one pound of water one degree Fahrenheit from 58.5 to 59.5 degrees Fahrenheit under standard pressure of 30 inches of mercury at or near its point of maximum density. One Btu equals 252 calories, (gram), 778 foot-pounds, 1,055 joules or 0.293 watt hours.
717825
if It is A/C Single Phase,Assume V=230,\n10 KVA= 10* 1000* V*A\n       P = V * I * 0.8 ( Power factor)\n       10000 = 230 * 0.8 * I\n          \n             Amps I = 54 A ( For single Phase)\n\nFor Three Phase V= 420 V.\n\nFor DC Supply Neglet the Power Factor
1117397
Look on the AC/DC power adaptor that came with your computer.  It should say how much power it supplies.  It's on the brick that is between the AC outlet and the DC power plug on your computer.  For mine, it says OUTPUT: 19V - 6.3A(6.3A).  Multiply those two numbers together, and that's how many watts your computer requires.  I have a P35, and I require almost 120 watts.
689831
Go to the APC site and enter your exact configuration and they their site will tell you exactly what you need to order. \n\nI ran your approximate configuration and got this answer\nAPC Smart-UPS XL 2200VA 120V + (2)SU48XLBP Battery Unit\n$1900 as the best option. They also had a less expensive recommendation. But you need to run the configuration yourself, because you did not provide all of the information that is needed to configure the UPS.\nBut you
996021
A few suggestions.  Check the website of the who made the air unit you have and see if their site has the info you need.  Check also this website --> http://home.howstuffworks.com/ac.htm  for a wealth of information that the web has.
313707
Assuming you are using US household electricity (120VAC)\nP=V^2/R   R=V^2/P = (120)^2/1875= 7.68 ohms which is really small.
602903
You don't, any more than you convert between volts and watts.  You can read about dBm in the article below, but simply put, it is a measure of power.
157300
pacific power n cooling 1000 watt