1. What Are Peak Hours?

Peak Hours represent the equivalent number of hours per day when solar irradiance averages 1 kW/m², calculated from daily insolation data. This metric is crucial for solar energy system design and performance analysis.

2. How Does The Calculator Work?

The calculator uses the direct conversion formula:

Where:

• \( Insolation \) — Solar radiation energy received per unit area (kWh/m²/day)
• \( Peak Hours \) — Equivalent hours of peak sun per day (h)

Explanation: Since 1 kWh/m² represents the energy received during 1 hour of peak sun (1000 W/m²), the insolation value directly equals the peak sun hours.

3. Importance Of Peak Hours Calculation

Details: Accurate peak hours calculation is essential for sizing solar power systems, estimating energy production, and optimizing system performance for specific geographical locations.

4. Using The Calculator

Tips: Enter insolation value in kWh/m²/day. This value is typically obtained from solar radiation databases, meteorological stations, or satellite data for your specific location.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between insolation and peak sun hours?
A: Insolation measures total solar energy received, while peak sun hours represent the equivalent time at standard test conditions (1000 W/m²).

Q2: How do I find insolation data for my location?
A: Use solar radiation databases like NASA's POWER, PVGIS, or local meteorological services that provide historical solar data.

Q3: Why are peak hours important for solar system design?
A: They help determine the daily energy production potential and are used to calculate the required system size to meet energy demands.

Q4: Do peak hours vary throughout the year?
A: Yes, peak hours vary seasonally due to changes in sun position, day length, and weather conditions.

Q5: What is a typical range for peak sun hours?
A: Typically ranges from 2-8 hours per day depending on geographical location, season, and local climate conditions.