power saver

[[email protected]]

Power-Save Energy Corp. products are responsible for thousands of
Americans saving millions of dollars on their utility bills. The Power-
Save 1200â„¢ energy saver save families as much as 25% on their electric
bill every month without sacrificing normal energy consumption and the
comforts it provides.
How the power savers work some say it works of Power factor
correction method is it true.

 

[krw]

Power-Save Energy Corp. products are responsible for thousands of
Americans saving millions of dollars on their utility bills. The Power-
Save 1200â=3F¢ energy saver save families as much as 25% on their electric
bill every month without sacrificing normal energy consumption and the
comforts it provides.
How the power savers work some say it works of Power factor
correction method is it true.

So you're admitting to fraud?

 

[[email protected]]

So you're admitting to fraud?

I just want to know what is the technology behind this and is this
devices are true power savers.

 

[krw]

I just want to know what is the technology behind this and is this
devices are true power savers.

They're often nothing more than a pilot light. Sometimes they have
MOVs to reduce "spikes". The most believable ones correct PF,
except that residential customers aren't charged for poor PF. In
*all* cases they're frauds.

 

[Don Lancaster]

They're often nothing more than a pilot light. Sometimes they have
MOVs to reduce "spikes". The most believable ones correct PF,
except that residential customers aren't charged for poor PF. In
*all* cases they're frauds.

Actually, there are perfectly legitimate power savers out there.

We picked up a bunch of them at a bankruptcy after they were either
wrongly wired, recalled, overhyped, or used where not expected.

A lightly loaded induction motor can definitely have its energy
efficiency significantly improved by dinking with a proportional phase
control. Freezers are a good candidate.

However the savings ONLY applies to places where lightly loaded
induction motors are the bulk of the load. And the savings are hard to
amortize if the control unit price exceeds nine dollars or so.

Or the motor is not run a significant fraction of the time.

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: [email protected]

Please visit my GURU's LAIR web site at http://www.tinaja.com

 

[Homer J Simpson]

Actually, there are perfectly legitimate power savers out there.

We picked up a bunch of them at a bankruptcy after they were either
wrongly wired, recalled, overhyped, or used where not expected.

A lightly loaded induction motor can definitely have its energy efficiency
significantly improved by dinking with a proportional phase control.
Freezers are a good candidate.

However the savings ONLY applies to places where lightly loaded induction
motors are the bulk of the load. And the savings are hard to amortize if
the control unit price exceeds nine dollars or so.

Or the motor is not run a significant fraction of the time.

ISTR some suggestion that they could burn out the motor under the wrong
circumstances. Unfortunate if it's a fridge or freezer.

 

[krw]

Actually, there are perfectly legitimate power savers out there.

We picked up a bunch of them at a bankruptcy after they were either
wrongly wired, recalled, overhyped, or used where not expected.

A lightly loaded induction motor can definitely have its energy
efficiency significantly improved by dinking with a proportional phase
control. Freezers are a good candidate.

Why would a freezer ever have a lightly loaded motor?

However the savings ONLY applies to places where lightly loaded
induction motors are the bulk of the load. And the savings are hard to
amortize if the control unit price exceeds nine dollars or so.

Or the motor is not run a significant fraction of the time.

Why would you ever design a system where a lightly loaded motor
would be running for a significant amount of time?

 

[Ken Smith]

A lightly loaded induction motor can definitely have its energy
efficiency significantly improved by dinking with a proportional phase
control. Freezers are a good candidate.

Yes, what you do is lower the voltage on the motor when it is lightly
loaded. The best way to do this is to have the device connected directly
onto the motor. It works better in industrial situations than in home
use.

The circuit is very like that of a light dimmer with the triac's firing
time controlled by the power factor. When the motor is running under a
light load, the voltage to it is reduced to keep some reasonable power
factor at the motor. Because of the nature of the triac control, the
power factor seen back at the mains is not improved but the losses in the
motor are.

In many industrial situations a motor will be run for long periods of time
at light load with shortish burst of near full load. The motor has to be
sized for the maximum load so most of the time it is seriously over
designed.

These devices have to contain a circuit to ensure that no DC component is
allowed to flow in the current to the motor. Any polarity imbalance will
make for huge losses perhaps to the point of burning out the motor.