This should be a real hoot fro QmoGen experimentors and Keppe motor fans


http://revolution-green.com/new-electric-motor-reduces-energy-consumption-up-to-80/


Kind Regards
Mark

OK,i dont get it
We already have electric motors with efficiencies of 97%.
So what is so good about an efficiency of between 75 and 80%?

Ok,so there motors use-Quote: Piper said: “Our motor uses 50 to 80 percent less energy than current motors,

So if current motors are say 60% efficient,and 50% of that is 30,then there motors are 80% efficient?.

Hey,maybe there onto something,as Jerard Morins waste water pump from a washing machine uses a PM rotor that runs on an AC current-->and he has OU

This thing doesn't smell right to me at all.  So they are comparing their motor to an ancient and inefficient shaded pole motor.  In today's day and age I seriously doubt that is a fair comparison when you talk about buying modern building HVAC equipment.  The energy costs for the fan ventilation for a big refrigerator is (my guess) perhaps only 5% of the total cost.  It's the big motors that run the compressors that consume the vast majority of the energy.  Therefore, any alleged improvements in fan motor efficiency are only going to take a small bite out of refrigeration energy costs.

I am going to issue the caveat that I am not going to do any research on this stuff.  Nonetheless, can anybody understand the attached  performance graph?  I can't make head or tail of it.  I am willing to bet you that you won't find similar graphs for established suppliers of fan motors.

The "green building" trend is at least 15 years old.  So for the last 15 years building designers and the associated building industry has been looking at all angles for improving building energy efficiency.  Do you think the people in the HVAC industry have been asleep at the wheel?

Also, going into buildings and ripping out old fan motors and replacing them with new fan motors is simply not a practical proposition.  I am just not feeling it.

The grandiose claims don't feel right to me and I bet you that the fan motor efficiency issue has already been dealt with by the industry.  These guys are just trying to over-promote themselves with marketing hype because getting even a tiny tiny sliver of the building construction industry is big money.  I really doubt that they have a better mousetrap and the other players in the multi-billion dollar electrical motor industry servicing the multi-billion dollar HVAC industry have been standing idly by.

I am not going to spend a few hours doing research to back up any of my statements but I feel if the research was done my statements would be vindicated.

@Webby

My 5 year old HVAC system has a multi-speed multi-stage pump system,, and,, wait for it,, a variable air handler fan.
It will cycle from like 25% I think they said up to 100% depending on the call from the "smart" thermostat.

The newest and most efficient systems all have variable speed brushless DC PM motors. A well you should be looking for a high turn down ratio which means the heating/cooling starts at 5% and progressively ramps up to 100% based on demand. The high turn down ratio to 5% ensures a lower stack temperature in heating mode and a lighter compressor/condenser load in cooling mode.
AC