Water management in Swaziland
2009-09-21 13:16:00 A series of articles on IPS focus on the problems of providing water to communities in Swaziland. The first one I came across seemed really positive, Sunshine brings the gift of water, until you... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]
Pump Seal Clarification
2009-09-17 22:12:00 An engineer told me that the pump seal water is only for the bearings and initial start up of the pump. Another engineer told me that the pump seal is used to keep the shaft from heating up. What is the true meaning of the pump seal?
How to Extend Life of Waste Water Pump Impeller
2009-09-16 14:57:00 We operating submercible pumps for handling waste process water. These pumps are of centrigugal type and MOC is castiron. in the recent past impellers are getting erroded veryfast and its life unpredictable. Max.life is 4-5 months. Pl. suggest suitable MOC inorder to over this issue. Is rep
Extending the Life of a Wastewater Pump Impeller
2009-09-16 14:57:00 We operating submercible pumps for handling waste process water. These pumps are of centrigugal type and MOC is castiron. in the recent past impellers are getting erroded veryfast and its life unpredictable. Max.life is 4-5 months. Pl. suggest suitable MOC inorder to over this issue. Is
Hydraulic Pump Calculations
2009-09-15 23:51:00 I am currently studying for my hnc in mechanical engineering and the notes we have been given out are not very helpful, half the formulas have been cut off by the photocopier. Help would be much a appreciated. Thanks. Question 1: A hydraulic pump delivers 0.03m3/min to a motor whic
Flow & Pressure Through Stand-By Centrifugal Pump
2009-09-11 10:07:00 Two centrifugal pump installed in parallel (1w+ 1sb) for cooling water application to boost pressure. At the inlet of pump pressure available is 3.3 bar(a) and after after boosting i.e at outlet of pump, pressure became 7.7 bar(a). My question is : what will be pressure & flow at the out let of
Flow and Pressure Through Stand-By Centrifugal Pump
2009-09-11 10:07:00 Two centrifugal pump installed in parallel (1w+ 1sb) for cooling water application to boost pressure. At the inlet of pump pressure available is 3.3 bar(a) and after after boosting i.e at outlet of pump, pressure became 7.7 bar(a). My question is : what will be pressure & flow at the out let of
Pump Testing
2009-09-11 09:03:00 If I have a pump manufacturer and motor manufacturer in a different state. Do we have to test the two togehter? I usually find out that this is not the case and most project ship the pump and motor to the site where it is being installed. Do we wait that late to verify the pump efficiency a
What is the Issue with Vortex in Pump Application?
2009-09-11 08:59:00 I heard a couple of engineers discuss vortex issue with pump application. What is the issue or problem that can occur? My online research I found that vortex allows air into the pump suction, which is bad. Pump run harder. It's like a pump running dry. Did I hit the money? How does
Vortex Problems in Pump Applications
2009-09-11 08:59:00 I heard a couple of engineers discuss vortex issue with pump application. What is the issue or problem that can occur? My online research I found that vortex allows air into the pump suction, which is bad. Pump run harder. It's like a pump running dry. Did I hit the money?
Can We Run Pump Using Solar Energy?
2009-09-09 13:08:00 hi, i wanted to know whether we can run an air compressor pump to lift water up to an height of 40 feet by using solar energy??? if yes how that solar energy can be stored and how it can be converted into electric energy, if we use air compressor pump hw much kw of power it requries for 30 min,wt w
Can We Run This Pump With Solar Energy?
2009-09-09 13:08:00 hi, i wanted to know whether we can run an air compressor pump to lift water up to an height of 40 feet by using solar energy??? if yes how that solar energy can be stored and how it can be converted into electric energy, if we use air compressor pump hw much kw of power it requries for 30 min,wt w
Aviation fuel pump
2009-09-07 16:57:00 I am in need of a pump for pumping aviation turbine fuel or jet fuel to pressures of upto 500 psi and flow of 20 GPH Please help me with names of some manufacturers. Thanks.
pump impeller selection
2009-09-07 12:44:00 I am facing frequent pronblem in pumps, processing media is slurry with concentration 30% of fine silica powder (Partical size <30Microns). Every time when we open the pump after 2 months running we observes complete erroded impeller and volute casing. We are using centrifugal pump(with Closed
combining solar water heater with heat pump
2009-09-07 00:04:00 Hi Folks As I'm not familiar with mathematic equations specific to energy conversions, I would be happy to see some realistic comments on the following. Say I can cover the roof of my house with 100 sqm of solar panels to have enaugh energy to heat my house and provide hot water. On the oth
Energy consumption of heater and pump
2009-09-02 05:49:00 Currently I am looking at the plant energy consumption (kWh) trend. Major equipment: electrical heaters and pumps. I compared the designed rated kW and running ampere which translated into kWh based on equipment operating hours. It was found that the running kWh of heater is almost 100% as
Power Failure--No Sump Pump, Basement Floods
2009-08-31 06:39:00 three weeks of clean-up, and what is not politely conversed so- i got my motor-home...extension corded to the basement and started pumping. i tore-out floors broke and repaired piping----short and sweet of this request for help and ideas.....i want a power plant similiar tothe ona
questions in recip comp,taper pins,dozing pump,
2009-08-30 11:03:00 hi i am intrestet on the rotating machinery & its accesories. - What are the main reasons of knocking sound from a reciprocating compressor. - what are the taper pins & Why taper pins are used in rotating machines? - If a diaphragm type dozing pump is not pumping, what w
Is pool pump motor with SF lower than original ok to be replced?
2009-08-30 09:41:00 Two non electrical pool mechanics have both stated don't worry about the SF on a new MOTOR when replacing my motor on my swimming pool PUMP. However the motor manufacture and others have quoted an engineering statement which says "Total output (HP x service factor) of a replacement MOTOR MUST equal
Pump suction line full vacuum in transient simulation
2009-08-28 16:48:00 As the subject says, the simulation of pump shut down transient event shows full vacuum conditions in suction line (1500/800mm). The three pumps are quite big ones - approx. 1750 l/s @ 120mHd per pump. The elder engineers stand the opinion that this is calculation error in the software (modeling pro
electric motor pump for 180meters elevation
2009-08-22 09:00:00 hello, In our place, we are elevated by about 180meters from the creek. I want to install an electric motor pump. Our power supply is an 220vAC.What type of pump shoul I used? Regards, Carel
85 Eldorado--fuel pump removal from tank
2009-08-22 06:42:00 Good evening ! Would anyone happen to know if the 85 Eldorado has an access "door" under the carpet in the trunk to provide for removal of the pump from the tank ? I ask only because removing the carpet to look for this access panel is no easy chore & besides I'm lazy, (old) and I real
Tell why you "dumped the pump" and win fabulous prizes
2009-08-18 13:00:00 I gave up my car in May after it was totaled in an accident. I'm fortunate to live less than two blocks from a Red Line station, and I work right near a station downtown. So commuting was always easy, but I've decided to do all my grocery and other shopping via the CTA. It's not quite as convenient certainly. Getting to doctor appointments is little harder, but not impossible. And I'm saving at least $1,000 on insurance, gas and maintenance. I didn't have a car payments.So that's why I "dumped the pump."How about you? The American Public Transportation Association wants to hear why, and if you tell them in a video, you could win a year's worh of public...
Wanted: High-Speed Hydraulic Pump
2009-08-13 14:00:00 Can you suggest a pump that can run off an electric motor running at about 10,000rpm capable of delivering 40MPa of pressure as part of a regenerative braking system for a 2 tonne vehicle. An alternator augments braking & supplies power to vehicles electrics plus running a motor to power
Water-Ring Vacuum Pump Loses Vacuum
2009-08-12 23:15:00 Water ring type vaccume pump maintaining less vaccume. Pump suppose to create -25 inch Hg vaccume but it is creating just -10 inch Hg vaccume. So what are the reasons for the same and what to do to solve this problem.
Well Pump
2009-08-12 06:23:00 My well is 550 ft. deep with a flow rate of 2 GMP.Right now, I have a timer on it to pump twice a day for 15 minutes each. The recovery time is slow. I pump to a tank and have gravity flow to the house. I've heard that there is some type of switch that can be inserted down the casing that will allow
water ring vaccume pump overload
2009-08-11 22:20:00 Vaccume pump trip on overload but when i throttel vaccume inlet valve load reduced from 25 amp to 22 amp. Why it happens
vaccume pump trip on overload
2009-08-11 11:44:00 vaccume pump trip due to overload but when we throttle gas inlet valve load reduced. the pump is liquid ring vaccum pump.
Vacuum Pump Problems
2009-08-11 11:44:00 vaccume pump trip due to overload but when we throttle gas inlet valve load reduced. the pump is liquid ring vaccum pump.
Sump Pump Slump
2009-08-10 21:56:00 I've done some minor research online about this, but I thought I'd ask the gurus here, especially some fellow homeowners who may have sumps in their basements. My sump works well but it'll be a matter of time before the iron ochre clogs the drains and/or the sump I'm using. Does a
Vertical Pump Tripping on Overload
2009-08-09 10:41:00 hi every one, we have a vertical (line shaft)molten sulfur pump that repetidly trips on motor overload: * the motor is 40hp * the rotation of the pumps free and no vibration is observed. * the pump pumps molten sulfur from a pit and delvered to a storge tank (no control on suct
Balance Leak-Off in Boiler Feed Pump
2009-08-09 08:35:00 what is the function of balance leak-off in boiler feed pump. its principal and working.
What is a Boiler Feed Pump?
2009-08-09 08:33:00 what is boiler feed pump. its principal and working .
Pump Shaft and Impeller
2009-08-08 06:02:00 I am working on a vertically mounted C-pump. I have a long shaft driving a centrifugal pump impeller. I am planning to bolt the impeller to the shaft. I would like to know hat are the forces that i need to consider to spec out an appropriate bolt. (axial? radial?). Thank you.
Pump Sizing
2009-08-07 16:12:00 How do I cater for two parallel vessel pressures connected to one common line in pump sizing?
Pump Sizing
2009-08-07 16:03:00 How do I cater for head pressure requirements for a pump feeding into a line that subsequently divides into two parallel lines. The parallel lines each feed into a pressure vesssel. how do i then cater for these two pressure vessels in the calculations. Are the pressures additive or I consider press
sweaty pump
2009-08-06 00:41:00 Hello All This may be a fuzz off topic, not sure. I have a pump located in a hot humid atmosphere (pumping chilled water) and have gobs of condensation. Is anyone aware of an insulating paint? And would this be an option? Any help will be greatly appreciated. Thanks!!
Relation of (NPSHA-NPSHR) and Pump Life Criteria
2009-07-31 09:10:00 I have come across the following requirement of Client related to Centrifugal pumps : - "For all Centrifugal pumps, NPSHA at 80 % of Normal Operating flow rate shall be equal or be greater than NPSHR required to meet the 40,000 hours life criteria" I have never come across such req
Monopropellant Powered Free Piston Hydraulic Pump
2009-07-29 01:35:00 I was doing some brainstorming/research this afternoon. The efficiencies of our current hydraulic systems is quite appalling. I credit this loss of energy to many factors, but in my mind the largest is the complexity of our current pump technology, and all the moving parts involved. I ran across thi
HEAT PUMP HOT WATER
2009-07-28 07:11:00 Does anyone know of a manufacturer that makes a 52 gal.??? residential hot water heater with a refrigerant coil in it.
Al Ridgway: spocktrometer the pump improv
2009-07-26 19:56:00 The Pump. Stratocaster Instrumental improvisation This is a content summary only. Visit Truth In Shredding to find out more!
What's the Best Slurry Pump?
2009-07-24 05:46:00 What's the best slurry pump? Our existing slurry pumps are all METSO pumps...On our combined tails and mill discharge, the volute and backliner only lasts for about 5days and gets busted.
Progressive Cavity Pump
2009-07-24 00:52:00 Hello guys Another definition question from the tariff guy. An Artificial Lift Downhole Pump which is said to be a "Progressive Cavity Pump" must be placed one of the following categories in my tariff. * Reciprocating positive displacement. (I dont think so, no piston involved)
Multiaxes Swash-Plate Angle in a Plunger Pump
2009-07-23 08:37:00 I have seen a strange plunger pump. Normally swash-plate angle is about one axis (15~18 deg), but some have multiple axes such as 17 deg about x-axis and 2 deg about y-axis. I have heard that the pump is used in aerospace. Does anybody know the reason of multiaxes angle?
centrifugal pump
2009-07-17 11:44:00 How to calculate the hydraulic power & Power required by the motor to drive a cetrifugal pump, from flow rate(Q) and head developed(H) . Is there any simple equation by which from Q& H, we can get the power required ?
100A 3-Phase Cutler Hammer Pump - Breaker Model HMCP100R3C
2009-07-16 16:48:00 Hi we have been having problems with the the above mentioned breaker. We have gone through 4 breakers within the year. Basically what is happening is that one of the phases of the breaker is burning up without tripping the breaker. This type breaker is being used with pump starters to start pumps
Maintenance for pump and spare parts!
2009-07-16 10:34:00 Hi all friends! Now in my company have some pumps use for transfer chemical, some days ago them have some troubles but unluck we don't have any drawing technology, documents about the maintenance, ... and result that we don't know repair that trouble. This pump have some specification like thi |
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