Re: Food processor

On Mon, 06 Feb 2006 15:50:33 +1100, Bill <me@xxxxxxxxxxx> wrote:

Sure they do, since Watts is directly converted to horsepower: 749 Watts
is 1 horsepower. In the case of a food processor, you'll only have the
few % losses in the gearbox to derate it from the advertised wattage to
useful work. Given the supply voltage, the current drawn, and the power
factor or the load you can work out how much energy is going into that
appliance to be converted to useful work.

It's watts of _output_ that may be converted to horsepower; what manufacturers
provide is watts of _input power consumed_. Not all motors have the same
efficiency, and efficiency varies over a wide range. Without knowing that
efficiency, you have no idea how much power a motor is producing.

And then on top of that you've got the drivetrain losses, etc.

-- Larry

.

Relevant Pages

  • Re: Food processor
    ... Given the supply voltage, the current drawn, and the power ... It's watts of _output_ that may be converted to horsepower; ... efficiency, and efficiency varies over a wide range. ... And then on top of that you've got the drivetrain losses, ...
    (rec.food.equipment)
  • Re: UPS efficiencies
    ... I'm trying to work out the efficiency of a ups system. ... No-load losses, sometimes called "core" losses. ... that the manufacturer provided into actual power values in kW or whatever. ...
    (sci.math)
  • Re: amps to hp
    ... electric motor to deliver "1 horsepower". ... (not requiring 3-phase power), and smaller than a horsepower or two, ... appear to me to be likely to have efficiency at best in the 80's %, ...
    (alt.home.repair)
  • Re: Table Saw Arbor Question
    ... added mass of a dado blade takes the spin-down time beyond what the ... Would you care to explain how a horsepower limit results in this ... tractability power bandwidth" allow a motorcycle with a given ... _usable_ power throughout its rev range while the small engine ...
    (rec.woodworking)
  • Re: That efficiency thing again
    ... I also compared the energy consumption of a Boeing 737-400 flying from ... Heathrow to Glasgow and a car journey using an Audi A4 2.5TDI Avant ... 132kV fed traction substations to give an idea of the efficiency ... the losses included in compressor stations. ...
    (uk.railway)
Loading