This is the case study of a storage based system of
Mana mohan Community hospital at Pharphing.
The main intention of these case studies is to filter the various
storage system of backup system with comparison with Lead acid battery storage
system VS Lithium Battery Storage VS Diesel Generator.
The aim of this comparison model is to figure out the
best model of different storage system, its reliability, financial
viability and sustainability with different schemes of technical advantages
and specifications.
Load
Calculations
Sno
|
Load Name
|
Power rating watt
|
No
|
Total
|
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
|
Incubator
Refrigerator
Video Xray
ESU
IRW
X-Ray machine
X-Ray machine Digital
Air Cooler
Desktop Computer
CDP Machine
Hematology Analyzer
Blood Chem Analyzer
Microscope
Light
1Hp Motor used in dentist
X-Ray monitor
|
650
400
480
640
650
12000
5600
1000
150
200
230
45
30
20
746
20
|
2
2
1
2
1
1
1
2
4
1
1
1
1
60
1
4
|
1300
800
480
1280
650
12000
5600
2000
600
200
230
45
30
1200
746
80
|
Total Load in watt hour
|
27241
| |||
Model based on a Diesel generator
The Maximum
peak load of the system is 12 KW X ray machines. So we need to go the minimum
of 35 KVA Generator systems. The total load is 27241 Watt hr. The minimum back
up time requires for the hospital is 4 hr. So the total load is 110 Kwhr Per
day.
Sn
|
Particulars
|
Price
|
5 Years estimation
|
10 Years Life time
|
Life
(15 yrs) time Price.
|
1.
2.
3.
|
Generator 30 KVA 35 KVA.
Yearly Service charges.
Yearly Fuel Consumptions.( Rs 32 per
unit).
|
23,00,000
10,000
12,94,800
|
(23,00,000)
50000
65,40,800
|
(23,00,000)
1,00,000
1,30,81,600
|
(2300000)
1,50,000
1,96,22,400
|
Total Price
|
36,04,800
|
88,90,800
|
1,54,81,600
|
2,20,72,400
|
The average per unit charges consideration of present market
price of diesel with generator comes at 32 Rupees per unit is 12,94,800. The total
life period of generator is taken as 15 years. This is the projected figure
with the minimum of 4 hr backup of per day till 15 years.
Financial
Model:
a)
The total project life time with 5 years
The total Loan period is taken as 5
years and the initial investment is 23, 00,000 with the interest rate of 10 %
annually and the monthly instalment is 48,868. However, the annual fuel
consumption cost with an average charges per KW hr diesel comes around 12,94,800,
and monthly comes around 1,07,900. . Finally the total monthly expenses comes
with EMI and fuel expenses is 1,56,768 and annually is 15,91,392. Hence the per
unit electricity cost (Kw hr) is Rs 46.86.
b)
The Total project life time with 10 years.
The total loan period is taken as 10
years and the initial investment is 23,00,000. However the loan term is all of
the above however the total monthly expenses with EMI and fuel charges is
1,38,295 and the per unit electricity cost is 41.91.
c) The total project life time with 15 Years.
The total loan period and project
life time taken as 15 years. The financial term is taken the same as above. The
total monthly expenses with EMI and fuel charges is 1,32,616. Hence the
electricity cost of per unit (Kwhr) is 39.64
Fig1: Monthly EMI and
Monthly Total Expenses
Fig2 : Diesel generator Kwhr
per unit price.
2. Model Based on Lead Acid Battery
storage system.
The total life time of a Lead ACID VRLA battery is taken as a
maximum of 5 years @ C 10 for this consideration. However the per unit KWhr is
taken as 8.46 because of the efficiency of the storage of battery at a charging
and at a discharging with an overall efficiency of whole system is 53 %.
The total cost of the system with inverter is 32,76,500.
Sn
|
Particulars
|
Price
|
Life (5 years)
|
10 years.
|
15 years.
|
1.
2.
3.
|
Inverter
Battery (40Nos
200Ah/ 12V )
Electricity(Per
Unit Rs 8.46)
|
765500
3200000
3,33,552
|
(765500)
32,00,000
16,67,760
|
(765500)
32,00,000
1667760
|
(765500)
32,00,000
16,67,760
|
Total
|
3998550
|
48,67,760
|
48,67,760
|
48,67,760
|
a) The Total project life time with 5 years.
The total project life time consist
of 5 years with EMI is 84245 and the total running cost with fuel and EMI is
1,12,041. The per unit electricity cost (kwhr) is Rs 33.49.
b)
The total project life time with 10 years.
The inverter life time
is taken as 10 years however the lead acid battery maximum life time is only 5
years. So the EMI has done separately with the inverter of 10 years and battery
in separate of 5/ 5 years. The inverter monthly EMI is 10116 (The financial
terms taken same as the diesel generator of the above) and battery is 67,991
and altogether is 78,077. However the total expenses including EMI is 1,05,873
and the per unit electricity cost( Kwhr) is Rs 31.65
c)
The total project life time with 15 years.
The inverter life time is taken as 15 years however the lead
acid battery maximum life time is only 5 years. However the EMI of battery is
same and the inverter EMI is Rs 8226 and the total monthly EMI including
battery and inverter is 76,217 expenses with EMI is 1,04,013. The per unit
electricity cost is Rs 31.08.
Fig3: Monthly EMI and Monthly
Total Expenses of a lead acid storage battery.
3. Model Based on Lithium Battery
storage system.
The actual minimum life time of a lithium battery is of 15
years. The financial term is taken as the same of above.
Sn
|
Particulars
|
Price
|
Life (5
years)
|
10
years.
|
15
years.
|
1.
2.
3.
|
Inverter
Battery
110 Kwhr
Electricity(Per
Unit Rs 5.76)
|
1021680
5448644
2,29,284
|
(1021680)
(3357200)
1146420
|
(1021680)
(3357200)
2292840
|
(1021680)
…………..
34,39,260
|
Total
|
5799608
|
114642
|
114642
|
1146420
|
a) The total project life time with 5
years.
The total life project life time and
depreciation is taken as a 5 years period. The financial term as of above with
the same other models. The total initial
investment is 64,70,324. The monthly EMI is 1,37,475. However the total monthly
expenses including EMI and battery charging expenses 1,48,932. The per unit
(Kwhr) electricity charges is Rs 44.52.
b) The total Project life time with 10
years.
The total life project life time and
depreciation is taken as a 10 years period. The financial term as of above with
the same other models. The total initial
investment is 64,70,324. The monthly EMI is
85,506. However the total monthly expenses including EMI and battery
charging expenses 1,23,720. The per unit (Kwhr) electricity charges is Rs 31.27.
c) The total Project life time with 15
years.
This is the actual project life of a
lithium battery storage system. . The financial term as of above with the same
other models.. The monthly EMI is 69,530. However the total monthly expenses
including EMI and battery charging expenses is 88,637. The per unit (Kwhr)
electricity charges is Rs 26.5.
Fig6: Lead acid battery
storage Kwhr per unit price.
4. Comparisons of three storage models.
The three different models have taken a reference for the
system with three different project life times. Hence this models is done in
order to evaluate the maximum charges and clear for the per unit charges at a
different time. However the financing is done under cent percent investment
from a loan with 10 % interest rate.
a) The evaluation of three different
models with 5 years project life time.
The three different energy solutions are
taken as a reference of project life time of 5 years. The initial investment of
a diesel generator is lower than two models but per unit cost of energy is
cheaper of lead acid battery then others two models (diesel and lithium
storage).
Fig7: 5 years life time
comparison with Diesel, Lead Acid and Lithium Battery backup system.
b) The evaluation of three different
models with 10 years project life time.
The
initial investment of all the three different would not change however the EMI
will changes. The per unit electricity charge of diesel is 41.91, Lead acid
31.65 and lithium storage is 31.27.
Fig10:
10 years life time comparison with Diesel, Lead Acid and Lithium Battery backup
system.
c) The evaluation of three different
models with 10 years project life time.
Hence, the initial
investment of a diesel generator is less than the above lithium and lead acid
battery storage however the running expenses of diesel generator is high.
Moreover, the environment impact and pollution analysis are beyond the scope
of this analysis but in real time analysis this issue should have to come in
benefit for Lead acid storage and Lithium.
Even though, the waste
management of lead acid battery is very difficult and it is more threating to
the environment and direct human health too. This analysis has not done yet and
should be done in more convenient way. The maximum life time of a lead acid
battery is only five year. So in every five years the waste generation by the
individual project is almost 2 ton of lead and the waste management is
critical.
So finally, the lithium
battery storage system is all way beneficent than any of two different
solutions because of its per unit energy cost throughout the project life time
is just only Rs 26.5 (Diesel and Lead acid) because of its environment friendly
and the long life time more than fifteen years.
