Solar Energy Reviews

Passive solar design: factors and assumptions needed to be considered

Many people wonder if we install solar energy system, we have to consider? What are the factors that may affect the performance of a photovoltaic system? There are a lot of money people spent thousands installing the system in their homes, but ends the system produces enough energy to power as expected throughout the house.

Understanding the factors that can affect production energy of a typical solar module independent is very important. You can save thousands of money. You purchase the components prevents excessive solar system and yet produce the equivalent of your investment ROI.

The current generated by the solar module is a vital parameter. Whether or not an efficient solar energy system typically depends on the current generated. The greater the current generated quicklier the battery can be charged. In addition, the estimated total power to support the entire building is also very dependent on the flow and what affects the amount of electrical appliances can be used in the building.

So what are the factors affecting the magnitude of the current generated? There are seven main factors, and are listed below:

1. The amount of sunlight reaching the cells.
2. The temperature of the cells.
3. The number of cells in the module.
4. The area of each cell.
5. Type silicon.
6. The state of battery is charging.
7. The effect of system losses, the losses of cables and blocking diodes.

Factor 1-5 to change the shape and position of the IV curve of a module ( title = "The curve IV, said."> What is the IV curve?). Factor 6 and 7 to determine the amount of current that charges up the battery.

To the design a passive solar system, typically a few assumptions are made. However, depending on the objective of the project and environment project site is may vary. The assumptions are:

1. The number of cells in the module is fixed.
2. The area of each cell is fixed.
3. The type of silicon is determined.
4. The battery is fully charged.
5. The system losses are negligible.
6. The system operates under the weather.

Of course 1-3, which are highly dependent on the specification of the solar module in the solar plant. Please see sheet of data it receives from its manufacturing company. 3-7 factors can be easily manipulated, but the factors 1 and 2 are very dependent on the condition of the surrounding and climate. Therefore, we must be careful to make assumptions in order to minimize the error of our data.

EEVblog #48 – solar power Hope