Video on Condensate Power Pumps

Hello ducon

You have posted the same Topic here: http://cr4.globalspec.com/thread/26740/Video-on-Condensate-Power-Pumps

I have replied to you there.

Kind Regards....

Thanks. I replied you there. Wish I could paste graphics like you.

i am not getting this concept

this video is not clear .

please let me know how is it working.

please let me see some photoes if you can send.

is it working on condensate pressure itself or it has electrical power supply.

I am sorry but I will try to post a clear video no sooner I get the opportunity to make one.The pump is not working on condensate pressure or electrical power supply.

The Pump is actually a positive displacement pump. It has a hollow body with inlet/outlet check valves. The only moving part is a "Float Assembly Unit" (used by all pump manufacturer detailed before) which has a 1/2" inlet point for motive steam/compressed air and a 1" exhaust.

During the OFF Cylcle the float is at the bottom and the 1/2" motive steam/air valve is closed while the 1" exhaust valve is open. As the pump fills in with condensate, the float rises till it reaches its maximum point and a snap-action spring opens the 1/2" steam valve closing the 1" exhaust. This is ON position. As motive steam/air enters the body it displaces the condensate out via the outlet check valve(since the position of both the check valves are in the same direction the inlet check valve blocks the condensate back-pressuring into the inlet line) and no sooner all the condensate is pushed out, the float reaches the bottom. The snap-action spring again shuts off the motive steam / air valve 1/2" & opens the exhaust valve 1". Now the pump is ready for the next operation.It will keep pumping as and whenever the condensate reaches and will stop when there is nothing. The pressure gauge indicates its working & cycle.As the gauge rises means- motive steam/air has entered, the exhaust valve has closed. As the gauge drops to zero means the condensate is pumped and the body is now empty with the float down, motive steam/air valve closed & exhaust valve open.

(Now watch the vieo carefully and you will hear the exhaust open/close with the pressure gauge indication)

The is no electricity/impeller/rotor/motor/level probes/panel / packings/ Glands etc., so there is no problem of pump cavitation and hence, the pump handles 100C condensate temperature.It even keeps working if submerged in pit.

The maximum height it can lift is 135 ft. Maximum motive steam pressure is 8.5 bar & compressed air 5.0 bar. Est. steam utilization is 2.5 lbs/1000 litres pumped. Maximum capacity is 7500 litres/hr on a 3" x 2" size pump at 11.5 ft, 7000 litres/hr at 30 ft, 6500 litres/hr at 45 ft, 6100litres/hr at 60 ft & 3500 litres/hr at 135 ft head.

Please go to my web page: www.duconems.com and you will find the pump broucher & photos.

Because it is virtually without any maintenance & trouble free there is always a repeat order.

Depending on the capacity & location you have the option to use 1 pump/machine or put a packaged unit in a pit and take 2-3 machines' condensate into the receiver to pump or you can add an additional pump(duplex unit) and pump combined 15000 litres/hr.

The same pump is utilized in special application as draining liquids under vacuum like multiple-effect evaporators in a sugar plant or to overcome heat exchanger stalling in Textile Dyeing machine application.

Irrespective of the application you do away with electrical pumps specifically designed for high temperatures to handle condensate temperature above 90C where the implellers are still prone to be damaged with the flash steam of the condensate above 90C imploding on the impellers. (Watch another video where the electrical pump failed and over 3500 litres/hr condensate is shooting off via the receiver's exhaust over 18 ft in height and being wasted unnecessarily on roof-top).

Me again. Based on the working principles I detailed go to the TLV website and see an animation of how the pump works. You will clearly understand the operating principles & operation.

we have problem of condensate return to boiler feed water tank. return water is highly contaminated so TDS is going high. thats why we divert condensate water to another tank. but still we want to use that heat to heat the boiler feed water without mixing with it. please guide me how can i heat the boiler feed water so that i can save the energy.

what is the best way to increse the temperature of boiler fuel oil.

please inform me.

First tell me what is your process? Rubber?

The only option you have is:

1 . Fabricate a Flash Vessel and take the flash steam of the condensate for heating feed water tank.

2 . Fabricate 316ss coil inside the Feed Tank and take the condensate via these coils to the separate tank. You then indirectly utilize the heat of the contanimated condensate whatever you can get for, every 6C rise in your feed water system you save 1% fuel at the boiler.