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Thursday, June 23, 2011

Solar cell questions are frequently asked by nonexpert

The following are various questions that often arise concerning SOLAR MODULE.

1. Is Solar Power Plant (SPP) can be utilized at night?

SPP is designed to be used both day and night, like electricity. Electricity generated by solar modules will be stored in the battery / Accu, so that electricity can be taken / used anytime.

2. Is SPP can be utilized during the rainy season / cloudy?

SPP has considered the design of the system year-round weather factors, when used in accordance with the instructions of use, then SPP will normally be used either in the dry season and the rainy season. This is possible because the size of solar module and battery / batteries have been calculated taking into account climate change throughout the year and the magnitude of the daily electricity needs. Hence, in the rainy season in the battery electric slow down because the electricity produced solar modules tend to be smaller than the use, in contrast to the dry season solar electricity generated modules tend to be larger than the use of electricity in the battery so that it slowly filled again. Although the rain / overcast, SPP can still generate electricity, while there is still light.

3. Is SPP equals "solahart" (solar water heater)?

SPP is disin is Solar Photovoltaic, that converts sunlight into electricity. Of course this is different from the solar water heater which absorb the sun's heat energy to heat water, which is included in the ka

category of solar thermal. Therefore, if overcast, SPP can still generate electricity as far as there is light, while the solar water heater can not use them.



4. Really SPP still too expensive?

With the release of subsidy on fuel, electricity SPP is now more economical than electricity from the generator (diesel), or when compared with petromak though. Moreover, if for rural or regional / remote island where the price of fuel is very expensive. When compared with the rate of PLN, the electricity of SPP is still relatively expensive, this is because the tariffs are not determined by the value pln to-ekonomiannya and for some classes of consumers still contains a subsidy from the government. SPP is therefore widely used for areas where pln not yet entered. However, for some regions, PLN also began using SPP, combined with a generator, to reduce the operational costs are very expensive generator.

5. Electricity of SPP can be used only for lights is it true?

SPP is principally a means of power supply. Electricity it generates can be used for all sorts of purposes, ranging from lighting, air conditioning, electronic devices, even to drive a car / plane / ferry and boat.

6. SPP Really only suitable for remote areas?

SPP can be used anywhere as long as there is sunlight, for both remote and urban areas, even in outer space (for satellite). The use in remote areas, is still dominating as in remote areas no other choice but to SPP. Lately in Indonesia started to SPP widely used in urban / buildings, whether by reason of environmentally friendly technologies, as well as technical reasons such as to turn back up if exposed to blackouts, as well as to improve the quality of electricity.


7. Is SPP can generate AC power (alternating current, alternating current)?

Electricity generated by solar modules is an electric DC (direct current, direct current), when AC power is required then the SPP system must be equipped with an inverter (dc to ac converter currents).

8. SPP Can be used for large electricity needs?

SPP sbegian in Indonesia are still used for small systems, 50-100Wp. Use with large capacity done since the 2000s, where SPP used in combination with generators (hybrid) as well as for grid connected in some buildings in Jakarta. For the hybrid capacity s / d 100 kW began widely used. SPP system today is the world's largest 6MW installed in Germany.

9. What is otonomy days (OD)?

OD is the number of days without sun. It shows the number of days in which the system can continue to survive SPP (electricity supply) even without any sunlight at all. Therefore OD also indicates the level of reliability of the system SPP TSB. OD should be determined at the time the system was designed, because it needs a different OD for each purpose, and will determine the capacity of the equipment used SPP. The greater its OD SPP then the system will be more expensive, but it also becomes more reliable. OD for SPP system is used for lighting (lighting), usually set three days, but on the SPP system for telecommunication at least 7 days, this is because the lighting system if the probability there is no sun for 3 days is reached, the level of losses suffered no too large, unlike the case with the telecommunications system losses can not sell the pulses can be very large, therefore, the telecommunications companies prefer to set a high OD, although the price systemnya become relatively more expensive, rather than risk losing revenue.