يكشنبه , 8 دي 1393

 

1.       How does photovoltaic (PV) technology work?
 
 
2.      What is a photovoltaic (PV) cell?
 
3.       What is a solar module?
 
     4.      What is a PV array?
 
     5.      What is a blocking diode?
                A blocking diode connects to the cable and prevents the solar panel from discharging the battery in the absence of sunlight. For example, a car battery will not act as an impedance load on a solar panel because of reverse blocking diodes that prevent nighttime battery discharging.
 
6.        Do solar cells store energy?
                No. Solar cells just convert sunlight into an electric current that must be used immediately or stored in batteries for later use.
 
7.       What is a PV array?
                A PV array is an interconnected system of PV modules that function as a single electricity-producing unit. The modules are assembled as a discrete structure, with common support or mounting. In smaller systems, an array can consist of a single module. A complete set of components for converting sunlight into electricity includes a module, a support structure, wiring, an inverter, a meter and other equipment.
 
8.      What is a blocking diode?
                A blocking diode connects to the cable and prevents the solar panel from discharging the battery in the absence of sunlight. For example, a car battery will not act as an impedance load on a solar panel because of reverse blocking diodes that prevent nighttime battery discharging.
 
9.        What is PV conversion efficiency?
                PV conversion efficiency is the ratio of the electric power produced by a PV device to the power of the sunlight shining on the device. Cell efficiency defines how much energy in sunlight is actually converted into electricity. Amorphous silicon modules have lower efficiency than other PV materials. Cell efficiency degrades progressively with use.
 
10.       How well do solar panels work in cloudy conditions?
 
11.       How well do solar panels work in the winter?
 
12.       Can I use equipment directly from solar panels?
 
13.       What type of maintenance is required on solar panels?
 
14.       What are the possible problems with solar panels and how can I prevent them?
 
15.       Are solar electric systems safe?
 
16.       Are solar power systems good for the environment?
                Energy created through our solar electric system produces no pollutants. Our smallest system typically cuts greenhouse gas emissions as effectively as 50 trees.
 
17.       When did solar cell technology develop?
                Modern solar cells with practical efficiency were invented in the early 1950s …
 
18.       Can a solar water heating system be used in place of a traditional gas or electric heating system?
                In order to ensure proper efficiency of your water heating system, a solar energy system must usually be used in conjunction with a traditional gas or electric heating system, rather than as an alternative to a traditional system. While it is possible to size a system to provide a 100% solution, the best return on investment occurs when a system is sized to provide most of the hot water, most of the time.
 
19.   Do solar thermal systems produce hot water in the winter?
                SPP solar systems will operate and produce hot water during the winter months but may require anti-freeze protection where applicable.
 
20.   Do solar thermal systems produce hot water on a cloudy/overcast day?
                SPP solar systems will be able to provide water heating during cloudy or overcast days, but may require the use of traditional gas or electric heating system to produce required temperatures.
 
21.   Can I use a solar collector with my existing hot water system?

                Most often times solar collectors can be used with an existing system by utilizing a simple solar conversion valve that connects to your existing water tank.

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