DUAL PURPOSE WATER PUMP
Dual purpose water pump serve the purpose of water lifting and also provide Bio fertilizer to farmer

Solution

DUAL PURPOSE :  Water Lifting & Bio Fertilizer

Principle of  operation :  1 Cubic Meter simple Bio Digester  with agri waste & 100 Grams Bio-Germs of  special  formula developed by our company which can digest the agri waste in 21 Days and as  this  digestion is a exothermic reaction will release heat from the mixture which will be carried by cold water circulating inside the tank and this  process  after 4th day can provide constant 70 Degree hot water as output which will be  fed  to  simple solar thermal collector and  temperature is  raised  to  130 to 150 Degree  and  this  heat is provided as input  to low temperature stirling engine which converts  heat energy to mechanical energy and this operates a mechanical pump  and lifts water . After 21 Days  the  farmer gets 0.6 Cubic meter Bio-fertilizer and can refill and start the process again on  monthly cycle basis.
Equipments Required:
1)  1 Cubic Meter  Bio-Digestor tank either made by Metal or Plastic  with heat exchange pipe and  thermal insulation.
2)  100 LPD low cost ETC ( Evacuated Tube collector ) based Solar water heater  readily  available from market
3)  Low temperature Stirling engine which convert heat to mechanical energy
4) Mechanical pump of suitable capacity
5) 100 Grams Bio-Germs per month

Basic Cost Analysis :
Alternative 1 :
Bio-Digestor of 1 Cubic meter capacity :  INR 15000/-
ETC solar thermal collector  :  INR 15000/-
Low Temperature stirling engine with Mechanical pump: INR 50000/-
Pipe Fittings & Flexible hose for flood irrigation : INR 5000/-
Bio Germs Cost per 100 Gram per month : INR 2500/-

Alternative 2 :
Bio-Digestor of 1 Cubic meter capacity :  INR 15000/-
ETC solar thermal collector  :  INR 15000/-
Simple Bio-Mass Burner  :  INR 10000/-
Steam Engine & Reciprocating Pump : INR 15000/-
Pipe Fittings & Flexible hose for flood irrigation : INR 5000/-
Bio Germs Cost per 100 Gram per month : INR 2500/-
Alternative 3 :
Bio-Digestor of 1 Cubic meter capacity :  INR 15000/-
ETC solar thermal collector  :  INR 15000/-
Simple Bio-Mass Burner  :  INR 10000/-
Stirling Engine Heat to Electric 1KW cpacity : INR 25000/-
Submersible Pump 1Hp Capacity with controller : INR 15000/-
Pipe Fittings & Flexible hose for flood irrigation : INR 5000/-
Bio Germs Cost per 100 Gram per month : INR 2500/-

Expected water lift :  30000 LPD  assuming  mechanical  efficiency  of  15% for Alternative 1   and  we  can  achieve 50000LPD  with  Alternative 2  where a bio-mass burner & Steam reciprocating engine is used. &  70000 LPD  with alternative 3  where striling engine heat to Electric with 1Hp submersible pump is used.

Advantages :
1) Dual purpose served for farmers ie.water pumping & Bio-fertilizer
2) If we use a simple & small  Biomass burner  Night or Rainy season water lifting can also be achieved.

Prototype :  1 Cubic Meter Bio-Digestor for Indivudual farmers use prototype developed but still not  tested for water pumping application as i am in the look for 1KW Stirling engine