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1. ERU CEP
MUHAMMAD DANISH MASOOD (2019-ME-2)
MUHAMMAD SAEED ARSHAD (2019-ME-3)
ARHAM QADEER (2019-ME-44)
ZAIN ABDULLAH BUTT (2019-ME-45)

2. Introduction
 Truck Cabin
 The truck selected for analysis UD 1800.

3. Introduction

4. Introduction
 HAP
 HAP is used to calculate the cooling load inside the truck cabin.
 The cabin is considered to a room.
 The cooling load calculated is used for solar load calculations.
 PVsyst
 It helps in calculating solar load, PV panels, Batteries and theirs costs.

5. Methodology

6. Methodology

7. Methodology
 Weather
 The location is selected which is Karachi, Pakistan.
 The longitudes and latitudes and hourly data are predefined.
 The months selected are from April to September.

8. Methodology
 HAP
 Space
 The data for walls, roofs and floor are added along with their U-values.
 The windshields and door windows data is added with Shading Coefficients and
their U-values.
 The data values are shown below
Lightening Electrical Equipment Infiltration
5 W 10 W 2 CFM

9. Methodology
 Front Wall
 Wind Shield
Front
Wall
Material
Dimensions Overall U Value
Overall,
Weight
Total Area (ft2) Thickness (in)
U
(BTU/lb/ oF)
W
(lb/ft2)
Layer 1 Cellular Poly Urethane
66
0.394
0.1408 1.6
Layer 2 Aluminum 0.079
Layer 3 PP T20 Plastic 0.079
Wind Shield
Material
Dimensions Overall U Value
Overall shade
Coefficient
Length (ft) Width (ft) Thickness (ft)
U
(BTU/lb/oF)
Tempered Glass 2.46 7.87 0.01 1.110 0.991

10. Methodology
 Side Wall
 Door Glass
Door Glass
Material
Dimensions Overall U Value
Overall Shade
Coefficient
Length (ft) Width (ft) Thickness (ft)
U
(BTU/lb/ oF)
Tempered Glass 2.46 3.94 0.01 0.565 0.791
Side Wall Material
Dimensions Overall U Value
Overall,
Weight
Total Area (ft2) Thickness (in)
U
(BTU/lb/ oF)
W
(lb/ft2)
Layer 1 Cellular
Polyurethane
60
0.394
0.1408 1.6
Layer 2 Aluminum 0.079
Layer 3 PP T20 Plastic 0.079

11. Methodology
 Back Wall
 Floor (unconditioned space)
Back Wall Material
Dimensions Overall U Value
Overall,
Weight
Total Area (ft2) Thickness (in)
U
(BTU/lb/ oF)
W
(lb/ft2)
Layer 1 Cellular
Polyurethane
66
0.394
0.1408 1.6
Layer 2 Aluminum 0.079
Layer 3 PP T20 Plastic 0.079
Floor
Dimensions Overall U Value
Total Area (ft2)
U
(BTU/lb/oF)
59.2 0.3

12. Methodology
 Roof
 Truck Tail
Roof
Dimensions Overall U Value
Total Area (ft2)
U
(BTU/lb/oF)
50.5 0.3
Truck Tail
Material
Dimensions
Length (ft) Width (ft) Height (ft)
Steel 26.7 8.02 9.84

13. Methodology
 System
 System requirements are sets which include dehumidification, fan,
thermostat schedule and ventilation etc.
Space Components Zone Components
Ventilation Supply Fan Dehumidificatio
n
Spaces Thermostat
Damper Leak – 5
%
440ppm CO2
0.5 BHP
90% efficient
60% Cabin 8AM-4PM
Only when
occupied

14. Methodology
 Schedule
 Two hourly profiles are created one with timings 8 A.M to 4 P.M and profile 2
with no working time.
 Two schedules are created one for working time other for thermostat.

15. Methodology
 Pvsyst
 Solar paths in Karachi are described by the figure:

16. Methodology
 The features of PVSyst presents the monthly weather characteristics such as including available
solar energy, unused energy, missing energy, energy supplied to the user, global horizontal
irradiation, and diffuse horizontal radiation.

17. Methodology (PV Arrays and Modules)

18. Methodology (Estimated Costs)
 Labor Cost is also included in the total cost which contribute to 15% of total cost.
Solar System Components Required quantity Unit Price
(Rs)
Total Price(Rs)
Panels(Modules) 16 997.21 15955.5
Batteries 23 1438.5 33086
Regulator 1 1450 1450
Inverter 1 66394 66394
Accessories 7 182.3 1276.1
Total Cost 118161.5

19. Results
 According to Direction
 Maximum Load Occurs at SW direction on September 1600.
Direction Time of Maximum
Cooling Load
Total Coil Cooling Load Required Flow Rate Relative
Humidity
(tons) (MBH) (CFM) (lbm/lbm)
N June 1600 0.7 7.9 221 44%
NE July 1600 0.7 8.2 231 43%
E July 1000 0.7 8.1 219 42%
SE August 1500 0.7 8.3 233 43%
S September 1500 0.7 8.4 240 43%
SW September 1600 0.7 8.8 260 43%
W August 1600 0.7 8.5 247 44%
NW June 1700 0.7 8.6 253 43%

20. Results
North (7.9 MBH)
North East (8.2 MBH)
East (8.1 MBH)
South East (8.3 MBH)
South (8.4 MBH)
South West (8.8 MBH)
West (8.5 MBH)
North West (8.6 MBH)

21. Results
 Monthly Loads
April May June July August September
N 7.1 7.5 7.9 7.8 7.7 7.3
NE 7.5 7.9 8.2 8.2 8 7.4
W 8 8.2 8.3 8.5 8.5 8.5
NW 7.8 8.3 8.5 8.6 8.4 7.9
S 7.5 7.4 7.6 7.8 8 8.4
SE 7.8 7.8 8.1 8.2 8.3 8.3
SW 8.3 8 8.1 8.3 8.8 8.8
E 7.6 7.8 8.1 8.1 8.1 7.9
MAX Load (MBH) 8.3 8.3 8.5 8.6 8.8 8.8
MAX Load (kW) 2.432 2.432 2.491 2.52 2.579 2.579

22. Results (Load Distribution)

23. Results (Load Consumption VS Solar
Production)

24. Results (Performance Ratio)

25. Results (Payback Period)
 The payback period is calculated and given by:
Payback Period =
PV System Cost
Saving per Year
=
118161.5
53820
≈ 2.2 Years