While intending the design of any solar PV system, solar cables manufacturers should carefully consider energy efficient factors to achieve the best results. In this article, experts will discuss about these factors in detail for your better understanding.
If you have less energy efficient appliances, you will require large PV system and for this huge investment will be needed. It is not a good idea even if you have enough to spend. You can instead invest in alternate power source, such as solar because fossil fuel is dirty and doesn’t last forever. So, it is important to make a judicial use of it.
Even if you have installed most efficient appliances, you should not ignore the inefficiencies of the PV system. Knowledge of distinct factors will be helpful for you as you can minimize the potential causes that degrade your system at the planning stage. Here are the considerations –
At our home, we usually have electrical appliances of 220V, which is significantly higher when compared to the PV system DC voltages of 12V, 24V, or 48V.
Solar cells perform better in cold weather conditions instead of hot climate. Solar panels are rated at 25 degrees Celsius that can be a lot different from the actual outdoor situation. In hot summer time, panel temperature can easily hit 70 degrees Celsius or even more, which results in 25% less power that can be acquired at 25 degrees Celsius temperature.
It is necessary to install solar panels at the areas where no shadow is present. A shadow on even a small area of the panel can put large impact on the output. This is why you always find solar panel outdoor under direct sunlight. The cells in the solar panel are usually wired in series and when the shade affects any cell, whole panel needs to face consequences. You can avoid wiring panels in series to prevent such conditions.
Voltage of solar silicon cells varies with light intensity. A solar panel with 12 volts would usually have 36 cells, resulting in a constant current up to 18V. Current drops off instantly above this voltage, which results in maximum power output being generated at around 18V. Charge controller includes DC to DC voltage converter that convert the panel voltage.
An inverter will be needed when the solar PV system is taking care of the needs of the AC loads. You can get 80%-90% efficient affordable solar inverters from the market.
Whenever you needed a backup, you require batteries for charge storage. For such things, lead acid batteries are widely used. How much the battery is efficient and robust in construction can be answered by its design.
These are the critical things that affect the efficiency of the solar PV system. You can ask for more details about the factors from solar cables manufacturers by posting comments below. If you have used solar batteries or system, do share your experience with other readers here.