Before installing solar photovoltaic power station should pay attention to?

As photovoltaic markets mature, more and more photovoltaic modules manufacturer. As a consumer, how do we find can ensure the high reliability of our income, high yield of pv modules, the following introduce everyone to buy components when

as the photovoltaic market matures, a growing number of pv module maker arises at the historic moment. As consumers, how can we find a high reliability and high yield of pv modules to ensure that our income? The following are some of the important considerations when buying a module. Toward the north component of power? Many homeowners to consider when designing roof with photovoltaic modules covering the entire house, to reach the effect of heat insulation, heat preservation and increase capacity, but many of the owners don't think power of the system in addition to the south. In fact, even if the phalanx in low latitudes north, good power loss is not less than 25% a year. East west is the preferred power direction of about 93%. Household photovoltaic system design concept is different from the large ground station. The roof is a valuable resource. Only as much as possible to install, can comprehensive income. It should be noted, however, the cluster matching. Second, photovoltaic modules need often clean? Many of the owners think photovoltaic modules in use after a period of time must be cleaned. In fact, this view is not correct. Surface photovoltaic modules have self-cleaning effect, rain will wash away the dust on the surface of the regularly. Frequent cleaning will not only greatly increase the generating capacity, but also will cause the waste of water resources. Only these parts need to be regular inspection and maintenance, can clear it is not easy to be natural rain washed away the dust, such as bird droppings. Cloudy day cleaning is also very good. Third, the parts look similar, they are the same? According to the statistical data from 2011 to 2015, the Australian market sold more than 500 brands of photovoltaic modules, even experts in the field of photovoltaic (pv) is unable to distinguish them. The following are some of the typical labels and specifications on the difference between information, doesn't mean they are exactly the same: 10 years product warranty; Linear 25 years warranty; Power level ( For example, 250 wp / 260 wp) Fourth, to distinguish the kw ( Kw) , peak watt ( Kw) And KWH ( KWH) When you buy a photovoltaic system, usually referred to these words. In Australia, for example, sales of pv systems generally use '5 kw ( 千瓦) System 'name, but strictly speaking, it should be called' five peak watt ( 成为朝鲜劳动党) System '. The 'peak' in the peak power ( “P”) Refers to the 'peak', namely the standard templates under the condition of solar cells of big capacity (the sum of 1000 watts per square meter of sunshine) 。 Kw is the unit of energy measurement. When called KWH or KWH, it means that for a period of time at a constant rate of use of electricity. Kw or peak watt's use does not represent a photovoltaic components in one day, a week, a month or a year of actual performance. It represents data of maximum module performance potential. As we say, when a car up to 200 kilometers per hour, '200 kilometers' here represent only the vehicle's top speed. 'Layer 1' what meaning be? Photovoltaic industry for many years has been committed to the development of a method for ranking and evaluation on component manufacturers. In the absence of quantitative testing system, many people begin to seek financial analyst's judgment. In many cases, the photovoltaic industry to use 'layer 1' as a way to quantify component quality. The ranking system is actually a kind of value ranking structure, institutions and enterprises has been widely used in financial analysis. Public acceptance is defined as 'discount', it was decided to use the brand of photovoltaic modules without recourse project access to bank debt financing the decisive factor. The definition of 'rank' and explains the theory of vertical integration includes product, the existence of the local offices and after-sales support department, indirectly reflect the product quality and after-sales service level. Ranking is very subjective, however, the lack of it, as defined by the content.