ESR FILLING BOOSTER SYSTEMS

Water is distributed by gravity from ESRs located at a convenient place. ESRs are in turn are filled from a UGR which receives the water from main balancing reservoir, by using pumps. This gives great opportunity to save capital cost and running cost as seen in the following case study
RAHATNI PUMPING STATION- PIMPRI- PUNE –MAHARASHTRA=INDIA
ESR capacity is 4.4 million liters.UGR capacity is 100,000 liters. A 30 hp pump is used fill the tank in 22 hours. Connecting pipe to UGR is of 400MM DIA via rising main of 900mm dia. The inlet pressure is 2.0kg/cm sq. -Water was taken in UGR to avoid sucking from rising main and creating imbalance to other users connected to the system ESR served only 40000 people. 
OUR SOLUTION : We provided online BOOSTER on 400 dia pipe, with Variable frequency Drive. It was possible to fill ESR in less than five hours. The power consumption at reduced speed was less than 30hp.
BENEFITS : ESR could be filled five times per day. The capital invested on ESR could be used for 2 lac people instead of 40 thousand people, apart from saving in energy costs.
The BOOSTER system is working satisfactorily for more than 10 years. 
DESIGN : 
The system consists of

• PUMPS
• CONTOL PANEL WITH VFD
• WATER HAMMER CONTROL DEVICES
• BY PASS LINES

• Transducers’
• Civil structures
• Alarm systems
• Piping and valves

COMMENTS : . With modern control systems it is possible to modify the existing systems and put the invested capital for multiple fold usage. Millions of people can get better water facilities at marginal costs. 

Long distance pumping is a highly challenging job. 
VAN ENGG Co was engaged to conceptualize the Design for RAMAKRISHNA GODAVARI LIFT IRRIGATION SCHEME near AURANGABAD in Maharashtra State
( Total hp of pumps in all 3 stages=15000hp, with 1100 dia pipe and total length of RM=27 KM, to irrigate 10000 hectares )

• Single stage pumping was ruled out ,because of high cost of heavy duty pipes,AND WATER HAMMER PROBLEMS.
• A three stage pumping was considered as per conventional method. With intermediate sumps
• Anticipated Problems
  • The sump had to be located in a village In case of imbalance in pumping, the water will overflow and flood the village and surrounding fields
  • Land availability will be a problem
  • Energy consumption was very high