Panel Solar Susunan Penentuan Saiz
Tentukan jumlah keseluruhan panel fotovoltaik yang diperlukan untuk memenuhi keperluan tenaga harian khusus anda.
Data Penggunaan
Penentuan Saiz Susunan Panel
Pengiraan kami termasuk Faktor Kehilangan standard 1.25 (25%) untuk mengambil kira penukaran inverter, rintangan pendawaian, dan variasi suhu.
Formula Penentuan Saiz
Bilangan panel bergantung kepada permintaan tenaga anda, cahaya matahari yang ada, dan kuasa setiap panel.
Kuasa Susunan Diperlukan
kW = (Daily kWh ÷ Sun Hours) × 1.25 Faktor kehilangan 1.25 merangkumi penurunan kadar akibat haba, rintangan pendawaian, dan kehilangan penukaran inverter yang mengurangkan output sebenar.
Bilangan Panel
Panels = ⌈(kW × 1000) ÷ Panel Watts⌉ Sentiasa bundarkan ke atas kepada nombor bulat seterusnya — pecahan panel menghasilkan sifar kuasa.
How to Size a Solar Panel Array
Sizing a solar panel array correctly ensures your system produces enough electricity every day without overspending on excess capacity. The three core variables are daily energy consumption (kWh), peak sun hours at your location, and the wattage rating of each panel.
What Are Peak Sun Hours?
A peak sun hour equals one hour of sunlight at 1,000 W/m² intensity. Most US locations average 4–6 peak sun hours daily. Northern and coastal areas typically see 3.5–4 hours, while the desert Southwest can exceed 6. Always use local solar irradiance data for the most accurate sizing.
Step-by-Step Sizing Guide
- Measure Your Daily Usage: Check your electricity bill for monthly kWh and divide by 30. Add 15–20% buffer if you plan to add appliances later.
- Find Your Peak Sun Hours: Look up your location's solar resource data. The default of 4.5 hours is a safe conservative estimate for most temperate regions.
- Choose a Panel Wattage: Modern residential panels range from 300W to 450W. Higher-wattage panels reduce the number of panels needed for the same output.
- Apply the Loss Factor: Multiply your raw requirement by 1.25. Real-world systems consistently produce less than their rated capacity due to heat, shading, and conversion losses.
- Round Up the Count: Always round the panel count up to the next whole number to guarantee you meet your energy target.
Common Sizing Mistakes to Avoid
- Ignoring seasonal variation: Size for your worst month (typically December for northern climates), not the annual average.
- Skipping the loss factor: A 1:1 system will under-produce on hot days, cloudy periods, and as panels age.
- Using nameplate wattage alone: Panel output degrades 0.5–0.8% per year. Build in headroom for long-term performance.