Step by Step BASIC CALCULATION Para sa Gustong mag DIY ng Solar - Beginner's Basic Guide in Tagalog
rodBAC ON・30 minutes read
The tutorial covers essential steps in computing the load for a solar setup, including determining wattage for appliances, battery capacity, solar panel size, and inverter wattage. Practical examples and recommendations are provided to aid beginners in setting up a solar system efficiently and effectively.
Insights
- Understanding the wattage of appliances without printed labels is crucial for calculating daily energy consumption in a solar setup, which directly impacts the required battery capacity.
- Battery DOD (Depth of Discharge) is a critical factor in maximizing battery lifespan, with sealed lead acid batteries recommending a 50% DOD and lithium batteries suggesting 80%, influencing the sizing and maintenance of the solar system.
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Recent questions
How can I calculate the load for a solar setup?
To calculate the load for a solar setup, you need to consider various components such as solar panels, solar charge controllers, inverters, and batteries. Begin by determining the wattage of appliances without printed labels to calculate daily energy consumption. Use the formula Power = Voltage x Current to compute wattage for appliances. Multiply the wattage by the hours of use per day and the quantity of each appliance to determine total energy consumption. This information is crucial for sizing the battery capacity and solar panel size needed to charge the battery bank effectively.
What is the significance of Battery DOD in a solar setup?
Battery DOD (Depth of Discharge) is crucial in a solar setup as it impacts the lifespan of the batteries. Sealed lead acid batteries recommend a DOD of 50%, while lithium batteries suggest 80%. It is essential to discharge lead acid batteries by only 50% to maintain longevity, while lithium batteries can handle an 80% discharge without affecting their lifespan. To calculate the required battery capacity, double the computed energy consumption to ensure a 50% remaining charge, which is vital for the overall efficiency and durability of the solar system.
Why are Pure Sine Wave inverters recommended for solar setups?
Pure Sine Wave inverters are recommended for solar setups due to their efficiency and compatibility with various loads. They are ideal for motorized loads and sensitive electronics like laptops and lights, providing better efficiency and brightness. For lighting loads, using 12-volt LED lights without an inverter is suggested to avoid the need for one. Pure Sine Wave inverters offer a clean and stable power output, making them suitable for a wide range of appliances in a solar system.
How do I determine the number of batteries needed for a solar setup?
The number of batteries needed for a solar setup depends on their capacity and the energy consumption of the system. For example, if you have a 100 Amp hour battery, one piece may be sufficient, while for 50 Amp hour batteries, two are required in parallel connection. To calculate the battery capacity, double the computed energy consumption and ensure a 50% remaining charge. This calculation is essential for determining the appropriate number of batteries to store and supply energy efficiently in a solar system.
What is the role of solar charge controllers in a solar setup?
Solar charge controllers play a crucial role in regulating the flow of electricity from solar panels to batteries in a solar setup. They help prevent overcharging and ensure the batteries are charged optimally. For PWM solar charge controllers, a 20 amp controller is recommended for a single 200 watt solar panel or two 100 watt panels in parallel connection. MPPT solar charge controllers offer higher efficiency and can handle higher input voltages, making them suitable for various solar panel setups. Understanding the type and capacity of solar charge controllers is essential for maximizing the performance and longevity of a solar system.
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Summary
00:00
"Calculating Solar Setup Load and Components"
- The video tutorial covers how to compute the load for a solar setup, focusing on solar panels, solar charge controllers, inverters, and batteries.
- Beginners are encouraged to watch the video from start to finish to understand the basic computations involved in setting up a solar system.
- The tutorial explains how to determine the wattage of appliances without printed labels, essential for calculating daily energy consumption.
- Detailed steps are provided on computing daily energy consumption using the wattage obtained from appliances, crucial for determining battery capacity.
- The video further delves into calculating the required battery size, followed by determining the necessary solar panel size to charge the battery bank.
- Components of a solar setup are discussed, including solar panels, solar charge controllers (MPPT and PWM), batteries, and inverters.
- The importance of understanding terms like Pmax, Voc, Vmp, Isc, and Imp on solar panel labels is highlighted for setup reference.
- The tutorial explains the conversion of DC to AC voltage by inverters, emphasizing the significance of Pure Sine Wave (PSW) and Modified Sine Wave (MSW).
- Practical examples are provided on computing wattage using the formula Power = Voltage x Current, especially for appliances without printed wattage information.
- The process of determining total energy consumption by multiplying the wattage, hours of use per day, and quantity of each appliance is detailed, aiding in sizing the solar setup.
18:20
Maximizing Battery Lifespan and Solar Efficiency
- Battery DOD (Depth of Discharge) is crucial for maximizing battery lifespan; sealed lead acid batteries recommend a DOD of 50%, while lithium batteries suggest 80%.
- Lead acid batteries should only be discharged by 50% to maintain longevity, while lithium batteries can handle an 80% discharge without affecting lifespan.
- To calculate the required battery capacity, double the computed energy consumption to ensure a 50% remaining charge.
- For a 12-volt system, the computed energy consumption of 1,168 watt hours requires a battery capacity of 97.3 Amp hours.
- The number of batteries needed depends on their capacity; for a 100 Amp hour battery, one piece is sufficient, while for 50 Amp hour batteries, two are required in parallel connection.
- Solar panels are needed to charge the battery bank; based on a 600 watt hour requirement and 3.5 sun hours, one 200 watt solar panel is recommended.
- The nominal voltage of the solar panel array should match the battery bank's voltage for PWM solar charge controllers; for MPPT controllers, a higher input voltage is acceptable.
- For PWM solar charge controllers, a 20 amp controller is recommended for a single 200 watt solar panel or two 100 watt panels in parallel connection.
- MPPT solar charge controllers offer higher efficiency and can handle higher input voltages; a 20 amp controller is suitable for a 200 watt solar panel setup.
- Inverter wattage should consider appliance starting currents, especially for inductive loads like electric fans, requiring a wattage allowance of at least three times the appliance's wattage for power surges.
37:11
Efficient Inverters and Circuit Breakers for Solar
- Pure sine wave inverters are recommended over modified sine wave inverters for motorized loads and sensitive electronics like laptops and lights, as they provide better efficiency and brightness. For lighting loads, using 12-volt LED lights without an inverter is suggested to avoid the need for one.
- When setting up a solar system, use DC circuit breakers for Direct Current and AC circuit breakers for Alternating Current. Calculate the required circuit breaker size by multiplying the maximum current flowing through the wire by 1.25 for safety, using the formula current equals power divided by voltage. Watch a separate video for detailed discussion on circuit breaker and fuse calculation.
