Question

why peak sun hours is used in estimation the size of many solar thermal and power systems ?explain

Answer 1

ANSWER :

peak sun hours describe how much solar energy is available during a day . which is the amount of solar energy striking a 1-square-meter area perpendicular to the sun’s location over a 1-hour period.Use of Peak Sun Hours is to Maximize Solar Efficiency.

specifically,we say that it is an hour during which the intensity of sunlight is 1,000 watts per square meter. many areas may experience less during the winter and more during the summer. Knowing the yearly and seasonal average peak sun-hours in our area is a helpful tool for deciding whether or not solar panels are a worthwhile investment for our projet.

The amount of solar radiation, or insolation, delivered by the sun varies throughout the day, based on the sun’s position in the sky, clouds, and other atmospheric conditions.

we can calculate the exact amount of insolation that solar panels will receive, by using an insolation meter. It reads regarding temperature, solar power supply, and current light intensity.

we know that ,

• Sun-hours increase during the summer due to the sun’s higher position in the sky.
• Solar energy increases near the equator, as it is closer to the sun.

FOR ANY SIZING OF SOLAR POWR SYSTEM WE SHOULD FOLLOW STEPS :

Step 1 - Determine Power Consumption Demands

Step 2 - Optimize Power System Demands

Step 3- Determine the Sun Hours Available Per Day

Step 4 - Size Your Array

the last step makes clear us to know the size of the solar panels their by size of the plant .

following steps to estimate the size of power system,

1. we should know the daily amp-hour requirement

2. know sun-hours per day for your area.

3. Divide step 1 by step 2. This is the total amperage required from your solar array.

4. take the peak amperage of the solar module you have selected.

5. Divide step 3 by step 4. This is the number of solar modules needed in parallel.

6. find the total number of modules needed in your array.

thank you.....................