What you have is not for a RAM pump. You want to keep a "reservoir" below the river bed from filling up. Ram Pump, in this case, can not be used specially for 200 liter/second and the set up is not available for extraction by the ram pump
200 liter/sec raised 2 meters to the river level will need a minimum of 200 * 2 * 9.81 = 3.942 KW of NET energy , then one needs to divide by the efficiency of the PUMP also, the 2 meters will require a multiplier to cover heights changes. If the river has 3 M^3/sec with 1 meter head, then using one 1/3 of the river volume = 1 M^3/sec one may produce around 9.81 KW GROSS watts to drive pump with 200 + liter/sec. Since the physical arrangement is not described, it is not possible to offer other solutions to the problem at hand. This is just generalities for possible attention for other solutions. Nando ----- Original Message ----- From: "davidrichardmann" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, June 06, 2005 5:23 PM Subject: [microhydro] Ram pump for water drainage > 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 > > > > > > > -- I am using the free version of SPAMfighter for private users. It has removed 64 spam emails to date. Paying users do not have this message in their emails. Try www.SPAMfighter.com for free now! ------------------------ Yahoo! Groups Sponsor --------------------~--> Has someone you know been affected by illness or disease? Network for Good is THE place to support health awareness efforts! http://us.click.yahoo.com/RzSHvD/UOnJAA/79vVAA/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/
