; REEPRO_tool_SHS_sizing
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REEPRO_tool_SHS_sizing

VIEWS: 7 PAGES: 5

  • pg 1
									      Solar panel sizing
I     Energy demands
                                                                                    Daily
                                                                 Number of                             Daily energy
      Consumer                              Nominal power                           operating
                                                                 appliance                             use (Wh)
                                                                                    times (hours)
      Lamp 1 reception room (1st floor)                     15                 1                   5           75.0      15x1x5
      Lamp 2 sister room (1st floor)                        15                 1                   5           75.0      15x1x5
      Lamp 3 drugs room (1st floor)                         15                 1                   3           45.0      15x1x3
      Lamp 4 inpatients rooms (2st floor)                   10                 4                   6          240.0      10x4x6
      TV 21" Color                                          85                 1                   2          170.0      85x1x2
      Drug fridge                                           55                 1                  12          660.0      55x1x12
      …                                     …                    …                  …                  …                 …x…x…
II    Total daily Enerby consumption                                                                        1,265.0      Wh/day
III   Total energy production                      Loss factor              1.30                            1,644.5       Wh/day
IV    Total Panel size                                   PGF                 2.93                            561.26      Wp
V     Number of 50Wp panels                                                    75                              8.00      pieces
      Battery sizing
II    Total Daily Enerby consumption                                                                        1,265.0      Wh/day
III   Battery size (deep cycle)             Autonomous                         5                            6,325.0      Wh/day
IV    Battery size (C10)                       System voltage                 12                             527.08      Ah
      Number of 200 Ah battery                                               200                                   3     units
      Battery size (C100)                       System voltage                12                             790.63      Ah
      Number of 200 Ah battery                                               200                                   4

      Controller sizing
      Maximum Charging current                         600.00 Wp                                              50.00 A
      Maximum Discharging current                      195.00 W                                                16.25 A
      50/50 controller would be OK

      Cable sizing
                                                                                    Exact Cable        Standard
      Distances                             Distance, m          total Wp
                                                                                    size, mm2          cable size
      Panels-controller cable                               6          600.00                   24                  24
      Controller-battery                                    1          795.00                 5.35                   6
      …
159x5=795
                  Solar Photovoltaic Home System sizing
                  (adapted from UNESCO training materials)
I. To determine expected daily energy consumption (Watthours per day)
                                                           daily use    energy use
           N.           Items       Unit Watts Quantity     hrs/day      Whrs/day     Remarks
              1   Light 1                  10          2            4              80
              2   Light 2                  10          1            2              20
              3   Light 3                  20          1            1              20
              4   Light 4                    5                                   -
              5   Light 5                    7                                   -
              6   Radio                    15                                    -
              7   TV B&W 14"               35                       3            -
              8   TV Color 14"             75          1            3           225
              9   TV Color 21"             95                                    -
             10   VCD/DVD                  15          1           3               45
             11   Refrigerator             90          1          12          1,080 Duty cycle            50%
             12   Fridge                   75                                    -
             13   Water pump              100                                    -
             14   Ventilation              60                       2            -
             15



II. Total Whrs/day                                                          1,470.0     Wh/day

III.Total Panels output: (II) x 1.3                                         1,911.0     Wh/day

IV. Panel size (Wp):         (III) / PGF            PGF=        2.93         652.2         W

     unit Panel size (Wp)                   75   Number of Panels               9.0

IV. Battery size, Whrs:          (II) x 5                                   7,350.0       Wh
                Voltage                     12           Ah                  612.5         Ah
          Unit battery Ah               150      Number of batteries              5

Notes:
         In case of using 24 V connection, number of panels or batteries must be even, because each par is to be connected in series first
         then the pars are to be connected in parallel
    Collection losses                  Losses
1   Orientation is not optimum                    5%
2   shadding                                      0%
3   Dust effect                                   5%
4   Temperature effect                           16%
5   Nameplate mismatch                           10%
    Total collection losses                      36%
    Panel efficiency                             64%
    LDSR, kWh/m2/day                            4.58 (Least sunny month for Vientiane)
    Panel Generation Factor (PGF)               2.93

    Other losses
    Cable                                        5%
    Semiconductor                                7%
    Charge regulator consumption                 2%
    Conversion losses inside battery            15%
    Total other losses                          29%
    Total system efficiency                     35%                                      1-


                Days of autonomous                 5

								
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