hydram's are costly if they are made from cast iron parts.currently we are making low cost fabricated hydrams... 6'x3' 4'x2' and 2'x1' flow efficiency is around 15% and costing works out to 500$-1700$ which is cheaper than most cast iron rams in the market today. they are being used in the hilly areas of west bengal state,india by small and medium farmers who have appreciated it.it can be made cheaper if thinner pipes are used .currently BS and IS(indian standard) pipes are used for fabrication .This is because a NGO procuring such devices have specified it in their contract. regards, soumendu
-----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Brian White Sent: Thursday, October 13, 2005 10:59 AM To: [email protected] Subject: [microhydro] Re: Ram pump for water drainage A pulser pump might manage it. The pulser pump would run continuously but you can arrange for it to be running "dry" most of the time. I do not know if it would do the 200 liters per second though. 150 continuously should be possible on your site. It has not been researched yet on that scale as far as I know. You might need an oil indudtry engineer to help. (They deal with 2 phase flow and might have the design knowelege) Brian --- In [email protected], "davidrichardmann" <[EMAIL PROTECTED] > wrote: > > I have a requirement to pump water out of an area below the main river > flow, and am considering using a ram pump for this. The main river > has plenty of water (over 3000 litres per second) and a head > difference at the weir of just over 1m. The area to be pumped lies a > further one to two metres below the river, so will need to be raised > by 2m to discharge back into the river. Pump flow rate would need to > be about 200 litres per second. The pump is required to keep the water > level below a fixed level, and will not be required to run > continuously - simple automatic starting when required would be ideal. > Any ideas on a suitable product to achieve this, where I could obtain > one and what it might cost? > Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] _____ YAHOO! GROUPS LINKS * Visit your group "microhydro <http://groups.yahoo.com/group/microhydro> " on the web. * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
