Technical Assessment of Solar PV System for Health Club Islamabad

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Technical Assessment of SolarPV System for Health Club

Islamabad


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Contents1 Introduction .......................................................................................................................................... 3

1.1 Background ................................................................................................................................... 3

1.2 Site Description ............................................................................................................................. 3

2 General Design ...................................................................................................................................... 4

3 Load profile ........................................................................................................................................... 4

4 System Design ....................................................................................................................................... 4

5 Cost Assessment ................................................................................................................................... 6

6 Conclusion ............................................................................................................................................. 7

7 Annexure 1 ............................................................................................................................................ 88 Annexure 2 .......................................................................................................................................... 11

9 Annexure 3 .......................................................................................................................................... 16


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1 Introduction

1.1 Background

1.2 Site DescriptionThe following site has been visited where the proposed Solar PV System will be

installed:

Health Club,

Blue Area, Islamabad

Coordinates:

Latitude: 33.725470Longitude: 73.086826


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2 General DesignThe Solar PV System will provide electricity to the Health Club during load shedding

hours with Figure 1 showing the design of the proposed Solar PV System. Electricity to

the Health Club shall be provided either from the grid or by the battery bank, which

will be charged through the PV generator, thus working essentially as a solar powered

UPS.

Figure 1: Possible Solar PV System Design

3 Load profileThe Health Club has different electrical appliances and 2 kW constant load has been

requested by the owner of the premises.

4 System DesignLoad profile described above was input to the solar simulation software PV Sol*

5.5 expert. Since the solar system will be designed as a UPS, thus the system has been

designed as an off grid application.


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The model system is only example for possible system design and should not be

considered as a final system recommendation. Prior to implementation of the project,

detailed planning and designing will be required by the contractor. The model systems

assumed for this study are poly-crystalline PV modules Yingli Solar YL240 P and 12 V

165 Ah Sonnenschein Model Dryfit Solar Block SB 12/185 AS batteries are selected to

provide electricity for load during the load shedding hours on daily basis.

The Yingli modules represent the middle class standard for cost-efficient yet quality

modules and are widely used for typical PV installations. The modules are rated at 240

Wp, are TV certified according to IEC-standards and are delivered with a positive

power tolerance of -0 W to +5 W. Power output warranty based on Nominal Power is 5

years at 95%, 12 years at 90%, 18 years at 85% and 80% for 25 years. The completedatasheet can be found in the annex to this study.

The following assumptions were made for the yield calculation:

0 % row-to-row shading loses assumed Losses due to deviation from the standard solar spectrum 1 % Losses in diodes 0.5 % Losses due to mismatch or deviation of power rating from the manufacturers

info 2% Losses in AC cabling were not considered Power degradation of PV modules 0.5 % of the original value per year One day of autonomy has been taken while a battery lower threshold of 30%

has been selected

Simulation report for a 2 kW load scenario is provided as Annexure 1.


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5 Cost AssessmentPreliminary cost analysis has been conducted to assess the potential Capital andOperating Costs for the designed solar PV system for 25 years and 10 years basis. Theresults of this analysis are provided in Table 1 below. It should be mentioned that these

cost estimates are based on installation of the specific equipment mentioned earlier.Costs can vary considerably if different equipment is selected.

Table 1: Cost Analysis for Solar PV System at Health Club

10 Years 25 Years

Load Requested Load: 2 kW Requested Load: 2 kW

Club Timings (daily) From 0900 hours to 2100 hours From 0900 hours to 2100 hours)

Load Requested2 kW constant load during plannedload shedding hours

2 kW constant load duringplanned load shedding hours

Planned Load Sheddinghours

6 hours daily (one hour power cutafter each hour)

6 hours daily (one hour powercut after each hour)

Solar PV System Capacity 4.32 kWp 4.32 kWp

Area Requirement 29.40 M2 29.40 M2

Total Cost for 3.4 kWpSolar PV System

1,702,150 1 1,702,150

Total Cost Including ofO&M & Batteryreplacement over 25years (PKR)

5,352,550 3,162,310

Cost per kilowatt hour(kWh) (PKR)

53.58 76.10

1 Solar PV Modules, Solar Charger and Power Inverter and batteries Costs have been taken through internet andalso attached as annexures at the end of the document.


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6 Conclusion


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7 Annexure 1

PV Sol Simulation Results

Location: IslamabadClimate Data Record: Islamabad (1961-1990)

PV Output: 4.32 kWpGross/Active PV Surface Area: 29.40 / 29.40 m

PV Array Irradiation: 61,559 kWhEnergy Produced by PV Array: 7,048.8 kWh

Converter Energy: 5,557.8 kWhConsumption Requirement: 4,380.0 kWh

Consumption Covered by Solar Energy: 4,252.1 kWhConsumption Not Covered by System: 127.9 kWh

Solar Fraction: 97.1 %Performance Ratio: 47.0 %

Specific Annual Yield: 984.3 kWh/kWpCO2 Emissions Avoided: 2,612 kg/a

System Efficiency: 6.9 %PV Array Efficiency: 11.5 %

The results are determined by a mathematical model calculation. The actual yields of the photovoltaic systemcan deviate from these values due to fluctuations in the weather, the efficiency of modules and inverters, and other factors.The System Diagram above does not represent and cannot replace a full technical drawing of the solar system.

2

9

18 x Yingli Solar YL240P-29b_IEC_2012-01 240 W

30; 0

8 x Sonnenscheindryfit solar block SB 12/185 AS165.0 Ah (C20); 2 x 12.0 V

STUDER INNOTEC COMPACT 23242.3 kW

Annual Energy Reqirement: 4380 kWhMax. Hourly Value: 2.00 kW


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System in Stand-Alone OperationLocation: Islamabad PV Output: 4.32 kWpClimate Data Record: Islamabad Gross/Active PV Surface Area: 29.4 m / 29.4 mNumber of Arrays: 1

Array 1: Array NameOutput: 4.32 kW Ground Reflection: 20.0 %Gross/Active Solar SurfaceArea:

29.4 m / 29.4 m Output Losses due to...

PV Module 18 x deviation from AM 1.5: 1.0 %Manufacturer: Yingli Solar deviation from Manufacturer's

Specification:2.0 %

Model: YL240P-29b_IEC_2012-01 in Diodes: 0.5 %Nominal Output: 240 W due to Pollution: 0.0 %Power Rating Deviation: 0 % MPP TrackerEfficiency (STC): 14.7 % Hersteller-Typ-LeistungNo. of Modules in Series: 2 AC Power Rating: 5.0 kWMPP Voltage (STC): 59 V MPP Tracking Range: 14.8 V To 118.0 VOrientation: 0.0 Efficiency at Nominal Output: 92.0 %

Inclination: 30.0 MPP Matching Efficiency: 85.0 %Mount: with VentilationShade: No

BatteryManufacturer: Sonnenschein Mean Charge Efficiency: 85.0 %Model: dryfit solar block SB

12/185 ASMean Discharge Efficiency: 99.0 %

Nominal Voltage: 12.0 V Charge ControllerC20 Capacity: 165.0 Ah Lower Battery Discharge

Threshold:30.0 %

Self Discharge: 0.1 %/Tag

Simulation Results for Total SystemIrradiation onto Horizontal: 54,610 kWh Battery Charge: 2,395 kWhPV Array Irradiation: 61,559 kWh Battery Losses: 384 kWhIrradiation minus Reflection: 59,166 kWh Charge Condition at Simulattion

Start:55.4 %

Energy Produced by PV Array: 7,049 kWh Charge Condition at SimulattionEnd:

55.4 %

Converter Energy: 5,558 kWh Solar Fraction: 97.1 %Consumption Requirement: 4,380 kWh Performance Ratio: 47.0 %Direct Use of PV Energy: 2,491 kWh Final Yield: 2.7 h/dConsumption Not Covered by

System:128 kWh Specific Annual Yield: 984 kWh/kWp

PV Array Surplus: 671 kWh System Efficiency: 6.9 %Consumption Covered by Solar

Energy:4,252 kWh Array Efficiency: 11.5 %

Battery Discharge: 2,012 kWh Inverter Efficiency: 94.4 %Battery Efficiency: 84.0 %


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Solar Energy Consumption as Percentage of Total Cosumption

Electricity Requirement - Appliance 4,380 kWhConsumption Covered by Solar Energy 4,252 kWh

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

k W h

350300250200150100

500


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8 Annexure 2Equipment Data Sheets


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9 Annexure 3Equipment Prices


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Technical Assessment of Solar PV System for Health Club Islamabad

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