Variable Speed Air Compressor

Hi everyone,

we are considering the purchase a large BOGE air compressor type SO181A, variable speed type. The price is rather lower than that from other competitors, so we suspect this might be related to lower quality. Does anyone have any experience, good or bad, with BOGE air compressors?

MOL Resistant Material

Hey folks. Hope life's good.

I needed some suggestions with regards to material suitable for pumps that circulate MOL (milk of lime). My industry currently uses a grade of CI for the purpose but the casing fails after about two months or so. So there is a constant hassle of changing these p

Bottoming and Actuator Pistons

The snubber slows the actuator near the end of travel to prevent overshoot and bottoming of the actuator piston. The implementation is relatively simple: position commands from the flight control computer are rate limited in the ARTs, with the rate limits reducing to zero near the end of travel. Thi

Calculating Starting Torque

When stared direct on line a three phase squirrel cage induction motor develops a startring torque of 120Nm, When started by an auto-transformer starter, the starter draws 48 amps from the supply and the motor draws 8- amps from the starter. Calculate the value of the starting torque developed by th

Determining Input and Output Power

A three phase, six pole induction motor when connected to a 400v, 50 Hz supply runs at full load with a speed of 960rpm and draws 22a from the supply at a power factor if 0.88. If the motor has a efficiency of 90%, determine the input/output power

I am looking for help to better understand

Calculating Line Current

Calculate the line current drawn by a three-phase synchronous motor operating with a 0.84 leading power factor, if when operating at unit power factor the motor draws a supply current of 1200amperes.

Olympics Idealism

What a pleasure watching the Vancouver 2010 Winter Olympics over the last couple weeks. It's easy to be cynical these days about many things - even about the commercialism and politics surrounding the Olympics - but to see young men and women and spectators from all over the world coming together to participate in sport with such unadorned pleasure and fellowship.... well, it gives one hope for a better world.