solar pv sizing

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SUMMER LOAD CURVE/DAY Sr No. Appliances AC/DC Power (W) Working Hours Energy (KWH) 1 Tube light AC 80 17.5 4.36 2 Energy Saver AC 30 12.25 0.545 3 Fan AC 100 20 5.025 4 Air Conditioner AC 1500 6 7.5 5 Oven AC 1500 0.5 0.6 6 Exhust fan AC 150 4 0.6 7 Washing m/c AC 1200 1 1.2 8 Mobile DC 10 3 0.1 9 Refrigerator AC 300 18 5.4 10 T.V AC 200 4 1.8 11 Laptop DC 40 3 0.2 12 Iron m/c AC 1000 0.25 0.25 13 Heater 5 0 0 14 Geyser 5 0 0 15 Stove 5 3.5 5.075 32.655 Total Insert Load Curves as in Class Task.

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Solar PV Sizing

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Page 1: Solar PV Sizing

SUMMER LOAD CURVE/DAY

Sr No. Appliances AC/DC Power (W) Working Hours Energy (KWH)

1 Tube light AC 80 17.5 4.36

2 Energy Saver AC 30 12.25 0.545

3 Fan AC 100 20 5.025

4 Air Conditioner AC 1500 6 7.5

5 Oven AC 1500 0.5 0.6

6 Exhust fan AC 150 4 0.6

7 Washing m/c AC 1200 1 1.2

8 Mobile DC 10 3 0.1

9 Refrigerator AC 300 18 5.4

10 T.V AC 200 4 1.8

11 Laptop DC 40 3 0.2

12 Iron m/c AC 1000 0.25 0.25

13 Heater 5 0 0

14 Geyser 5 0 0

15 Stove 5 3.5 5.075

32.655Total

Insert Load Curves as in Class Task.

Page 2: Solar PV Sizing

SUMMER LOAD CURVE/DAY

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 1 2 3 4 5 6 7 8 9 10111213141516171819202122232425

KW

H

TIME (HRS)

SUMMER LOAD CALCULATIONS

SHOULDER

DAY

PEAK

NIGHT

SHOULDER

Page 3: Solar PV Sizing

INTERMEDIATE LOAD CURVE/DAY

Sr No. Appliances AC/DC Power (W) Working Hours Energy (KWH)

1 Tube light AC 80 17.5 4.36

2 Energy Saver AC 30 12.25 0.435

3 Fan AC 100 20 3.425

4 Air Conditioner AC 1500 0 0

5 Oven AC 1500 0.5 0.6

6 Exhaust fan AC 150 4 0.6

7 Washing m/c AC 1200 1 1.2

8 Mobile DC 10 3 0.1

9 Refrigerator AC 300 18 6

10 T.V AC 200 4 1.8

11 Laptop DC 40 3 0.2

12 Iron m/c AC 1000 0.25 1.25

13 Heater 5 0 0

14 Geyser 5 0 0

15 Stove 5 2.5 3.625

23.595Total

Insert Load Curves as in Class Task.

Page 4: Solar PV Sizing

INTERMEDIATE LOAD CURVE/DAY

Page 5: Solar PV Sizing

WINTER LOAD CURVE/DAY

Sr No. Appliances AC/DC Power (W) Working Hours Energy (KWH)

1 Tube light AC 80 17.5 4.36

2 Energy Saver AC 30 11.5 0.415

3 Fan AC 100 0 0

4 Air Conditioner AC 1500 0 0

5 Oven AC 1500 0.5 0.6

6 Exhaust fan AC 150 4 0.6

7 Washing m/c AC 1200 1 1.2

8 Mobile DC 10 3 0.1

9 Refrigerator AC 300 18 5.4

10 T.V AC 200 4 1.8

11 Laptop DC 40 3 0.2

12 Iron m/c AC 1000 0.25 0.25

13 Heater 5 6 4.2

14 Geyser 5 5.5 3.9

15 Stove 5 3.5 5.075

28.1Total

Insert Load Curves as in Class Task.

Page 6: Solar PV Sizing

WINTER LOAD CURVE/DAY

Page 7: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

Sr No. Appliances AC/DC No. of appliances Power (W) Power(W) of N app Working Hours Energy (KWH)

1 Tube lights AC 2 80 160 5 0.8

2 Energy savers AC 3 30 90 3 0.18

3 Fan AC 3 100 300 6 1.2

4 Exhaust fan AC 1 150 150 1 0.15

700 2.33

Running Load on UPS

Insert running Load Curves of all seasons as in Class Task.

Total

Grid Line (220 V)

Rectifire (30 A)

Battery (12V,185Ah)

Inverter

(1000W) Load (700 W)

Page 8: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

12 VOLTS

185 AH

Power(VAH) 1800

Load factor 0.6

Power (W) 1080

First of all, we will calculate charging current for 120 Ah battery. As we know that charging current should be 10% of the Ah rating of battery.

185*(10/100) 18.5

10

10 Hours

1080W

10 hrs

BATTERY SPECIFICATIONS

charging current for 185 Ah battery

Charging time for 185 Ah battery(battery Ah/charging current)

Battery full charging time

BATTERY CHARGING TIME

GRID ELECTRICITY UNITS TO CHARGE BATTERY

Battery power

Running load is the general term for the instruments/equipment that will draw power. Anything that uses electricity to do work will draw current.

The amount depends on how much resistance to current flow the device has and the amount of voltage applied to it, assuming the source has

more power to give than the load will use.

Battery charging time

Grid units required to charge the

battery10.8

Page 9: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

Note:

Define running load and specifications of all components of the system, given that invert capacity is 1000 Watt.

Calculate No of hours required to fully charge the battery.

Designed system should fulfil load requirement for whole year.

Write down all calculations on same sheet.

Calculate Grid electricity units required to chrage battery.

Page 10: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

Page 11: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

Page 12: Solar PV Sizing

SUMMER RUNNING LOAD/DAY

Note:

Define running load and specifications of all components of the system, given that invert capacity is 1000 Watt.

Calculate No of hours required to fully charge the battery.

Designed system should fulfil load requirement for whole year.

Write down all calculations on same sheet.

Calculate Grid electricity units required to chrage battery.

Page 13: Solar PV Sizing

Sr No. Appliances AC/DC Power (W) No. of appliances Power of n appl. Working Hours Energy (KWH)

1 Tube light AC 80 2 160 5 0.8

2 energy saver AC 30 3 90 3 0.27

3 Fan AC 100 1 100 6 0.6

4 Mobile DC 10 2 20 1 0.02

5 Laptop DC 40 1 40 1 0.04

410 1.73

Running Load on Solar PV System

Total

Insert running Load Curves for all seasons as in Class Task.

Solar Panel (500W)

Charge Controller (10 A)

Battery (48V,150 Ah)

Inverter (600 W) Load (410 W)

Page 14: Solar PV Sizing

Panel wattage 500 W

Cable sizing1730W/day Length of cable(L) 40m

3.46 Max voltage drop(V-) 0.3V

4 Copper conductivity(k) 46.82

Current(A) 10

Cable section (L*A)/(K*V-)

Total load 410W Cable section(mm^2) 28.47785847

25% of load 102.5

Inverter size 512.5

600 W

Battery Capacity (Ah) = Total Watt-hours per day used by appliances x Days of autonomy

Total watts hr per day 1730

Days of anatomy 2

141.339869

Solar charge controller rating = Total short circuit current of PV array x 1.3

Panel voltage 48 V

Load 410 W

Charge control size(A) 8.54166667

10A

PV Panel SizingPv panels energy needed/day

No. of pv panels/modules ((1730/500))

No.of Pv panels/modules

CALCULATIONS

As inverter is 25% greter than the total load

Inverter sizing

Inverter size

Battery sizing

Battery capacity(Ah)

Charge controller size

(0.85 x 0.6 x nominal battery voltage)

Charge controller design

Page 15: Solar PV Sizing

Write down all calculations on same sheet.

Designed system should fulfil load requirement for whole year.

Note:

Define running load and specifications of all components of the system, given that 500 Watt PV panels are installed at your home.

Page 16: Solar PV Sizing

Sr No.Component Qty Type Specs Make Company Company Contact Price (Rs.)

1 Solar Panel 4 Poly crystaline 150W Nizam energy www.nizamsolar.com 36000

2 Charge Controller 1 10A Intechpower solution www.intechpowersolution.com 11,000

3 Battery 4 12V,150Ah osaka www.volta.com.pk 48,000

4 Inverter 1 600W Shenztech www(.)upsats(.)com 12,000

5 Solar Cables 1 40 m 28.47 mm2 Pakistan cables www.pakistancables.com 21,890

6

7

8

9

10

128890

Sr No.Component Qty Type Specs Make Company Company Contact Price (Rs.)

1 Rectifier

2 Battery 1 12V,185Ah Osaka www.volta.com.pk 13,500

3 Inverter 1 1000W 10,000

4

5

6

7

8

9

10

Annual Recurring Cost

UPS System

Total Capital Cost

Annual Recurring Cost

Annual Saving

Solar PV System

Total Capital Cost

Page 17: Solar PV Sizing

Write down all calculations on same sheet.

Calculate payback period & NPV (rate of return=8%)for UPS and Solar PV System and show graphically.

Describe economic comparison between two systems.

Use electricity cost Rs.15 per KWH for calculations.

Page 18: Solar PV Sizing

UPS SYSTEM

Payback period

grid units required to charge battery 10.8

unit cost(Rs.) 162

Discharging time 3hrs

Load running on ups 700W

Cost saving 94.5

Capital cost 23,500

Profit or loss/day -67.5

Profit or loss/year -24300

payback period(years) -0.96708

Net present worth

NPV -91,000.00

As NPV is negative so it is not profitable to install ups system

PV SYSTEM

capital cost 128890

Load/day 1.73kwh

Profit/day(Rs.) 25.95

profit/year 9342

payback period 13.79683151

payback period(years) 14 years

Net present worth

NPV $249,990.00

NPV Rs.249,990

So,it is profitable to install the pv system as NPV is positive