Describe your site and its usage, being sure to include relevant details needed to design a PV system for a specific situation. These details include whether the building is residential or commercial, patterns of usage (single family home, multiple family home, 24/7 manufacturing plant, office park building that generally is only open during weekdays from 7 AM to 6 PM, shopping mall open for business daily from 8 AM to 9:30 PM), overall size (how many floors, rooms, overall square footage), and area footprint of the building. Use one of the linked resources (U.S. only, international) to calculate your average annual sunlight hours and provide a direct link to the actual map you used.
Answers
Answer:
Explanation:
Solar photovoltaic system or Solar power system is one of renewable energy system which uses PV modules to convert sunlight into electricity. The electricity generated can be either stored or used directly, fed back into grid line or combined with one or more other electricity generators or more renewable energy source. Solar PV system is very reliable and clean source of electricity that can suit a wide range of applications such as residence, industry, agriculture, livestock, etc.
Major system components
Solar PV system includes different components that should be selected according to your system type, site location and applications. The major components for solar PV system are solar charge controller, inverter, battery bank, auxiliary energy sources and loads (appliances).
��� PV module � converts sunlight into DC electricity.
��� Solar charge controller � regulates the voltage and current coming from the PV panels going to
battery and prevents battery overcharging and prolongs the battery life.
��� Inverter � converts DC output of PV panels or wind turbine into a clean AC current for AC
appliances or fed back into grid line.
��� Battery � stores energy for supplying to electrical appliances when there is a demand.
��� Load � is electrical appliances that connected to solar PV system such as lights, radio, TV, computer,
refrigerator, etc.
��� Auxiliary energy sources - is diesel generator or other renewable energy sources.
Solar PV system sizing
1. Determine power consumption demands
The first step in designing a solar PV system is to find out the total power and energy consumption of all loads that need to be supplied by the solar PV system as follows:
1.1 Calculate total Watt-hours per day for each appliance used.
Add the Watt-hours needed for all appliances together to get the total Watt-hours per day which
must be delivered to the appliances.
1.2 Calculate total Watt-hours per day needed from the PV modules.
Multiply the total appliances Watt-hours per day times 1.3 (the energy lost in the system) to get
the total Watt-hours per day which must be provided by the panels.
2. Size the PV modules
Different size of PV modules will produce different amount of power. To find out the sizing of PV module, the total peak watt produced needs. The peak watt (Wp) produced depends on size of the PV module and climate of site location. We have to consider �panel generation factor� which is different in each site location. For Thailand, the panel generation factor is 3.43. To determine the sizing of PV modules, calculate as follows:
2.1 Calculate the total Watt-peak rating needed for PV modules
Divide the total Watt-hours per day needed from the PV modules (from item 1.2) by 3.43 to get
the total Watt-peak rating needed for the PV panels needed to operate the appliances.
2.2 Calculate the number of PV panels for the system
Divide the answer obtained in item 2.1 by the rated output Watt-peak of the PV modules available
to you. Increase any fractional part of result to the next highest full number and that will be the
number of PV modules required.
Result of the calculation is the minimum number of PV panels. If more PV modules are installed, the system will perform better and battery life will be improved. If fewer PV modules are used, the system may not work at all during cloudy periods and battery life will be shortened.