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Comparative Analysis between Domestic Water Heaters & Heat Pump for Residences

Comparative Analysis between Domestic Water Heaters & Heat Pump for Residences
Parameters Units Systems
    Domestic Heater Heat Pump
No of bathrooms No 100 100
Ltrs / bath Litres 30 30
Total requirement of hot water to be heated from 20 °C to 50 °C lts/day 3000 3000
Energy required for heating( Ltrs x Temp Diff ) kCal/day 90000 90000
Energy required in KWH = ( Kcals /860 ) KWH 104.65 104.65
Electrical Energy required for heating/day ( for Domestic Heater ) KWH/day 104.65  
Electrical Energy required for heating/day ( for Heat Pump ) KWH/day   44
Cost of energy/kwh Rs. 8 8
Cost of operations/day Rs. 837.21 352
Energy savings/day Rs.   485.21
Energy savings/day Rs.   177101.40
Cost of water heaters,installation @Rs 10,000 each 100 1000000  
Cost of Heat Pump installation @ Rs 5 lacs( HP)+ Rs 4 lacs (piping and accessories)     900000
Difference in cost of installation     100000
Nett cost savings in instalation and annual operation     277101.40