viper
Titanium
- Joined
- May 18, 2007
- Location
- nowhereville
I talked with an RPC OEM after emailing them looking for efficiency charts. The guy indicated that an RPC is ((98%)) efficient from 0-60% load with efficiency dropping with load... I about shit myself and asked where he got that data from.. Of course his engineers just throw that out for him. I did ask him for giggles if that means there is virtually no work done when an RPC is idling with no load (0% load)?
I further explained my minimal load tests that indicate something quite different. Actually at partial load 40-60% efficient is a little more in the ball park. I cannot help but believe these manufacturers DO know about the efficiency but down play it because it is bad for business. All I kept hearing was "how well they are balanced".... Then I asked "at what load?", the said "any load"..... BS!!!!
Very grade school basic testing by comparing the input power to the output power will account for electrical losses as well as slip and heat losses in the idler motor. I have no idea how they account for their information but a bunch of bullshit if you ask me.
Just thought I would share.
I further explained my minimal load tests that indicate something quite different. Actually at partial load 40-60% efficient is a little more in the ball park. I cannot help but believe these manufacturers DO know about the efficiency but down play it because it is bad for business. All I kept hearing was "how well they are balanced".... Then I asked "at what load?", the said "any load"..... BS!!!!
Very grade school basic testing by comparing the input power to the output power will account for electrical losses as well as slip and heat losses in the idler motor. I have no idea how they account for their information but a bunch of bullshit if you ask me.
Just thought I would share.