"3 kW is enough. If the sunshine time is 5 hours per day, 15 kilowatt hours of electricity will be produced each day. Generally, an average of 5 kilowatt hours of electricity per day is sufficient for a household. Calculation based on 5 hours of sunshine, a 1 kW power generation device is needed. It takes about 30 square meters. A 30 square meter photovoltaic panel costs about 10,000 yuan, and a battery can store 5 kilowatt hours of electricity. electricity costs about 30,000 yuan >
How many kilowatt hours of electricity can a solar panel produce in a day
1 square meter of crystalline silicon solar panel is about 120 -140W, if calculated as 120W, the sun at 6 o'clock in the day, it is 120*6=720WH It depends on the lamp How many hours should it be used per day? consecutive rain are required if used for 9 hours a day?and 3 rainy days, then the battery panel is 30-50W
Different regions, different installation difficulties, different roofs, etc. The costs required for different installation methods are slightly different. p>Principle of energy production
Solar cells react to light and can convert light energy. There are many types of materials that can produce photovoltaic effects, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium. arsenide, selenium, indium, copper, etc. Their principles of energy production are basically the same. Here we take the photoelectric power generation process as an example. P-type crystalline silicon is doped with phosphorus to form a P-N junction. p>When light shines on the surface of the solar cell, part of the photons are absorbed by the silicon material; the energy ofphotons are transferred to the solar cell, which causes the electrons to transition and become free electrons which accumulate on both. sides of the P-N junction to form a potential difference. When the external circuit is connected, under the action of this voltage, a current will flow through the external circuit to produce a certain output power. The essence of this process is: the process of. convert photon energy into electrical energy
Theoretically, 1 square meter of solar panel can produce 1.2 to 1.4 kWh
. Generally speaking, 1 square meter of crystalline silicon solar panel is equivalent to about 120-140 W. If calculated as 120 W, the sun at 6 hours a day is 120*6 = 720 WH.
The 10 W lamp depends. on the number of hours of use per day and the number of consecutive rainy days it requires. If it is used 9 hours a day and 3 rainy days, then the panbattery capacity is 30 to 50 W. < /p>
Application. fields
1. Solar User Power Supply
(1) Small power supply ranging from 10 to 100 W, used in remote areas without electricity such as plateaus, islands and pastoral areas, borders. posts and other military and civilian electricity in daily life, such as lighting, television, radio, etc. ;
(2) 3-5KW household rooftop grid-connected power generation system;
(3) Photovoltaic water pump: solve the problem of watering and irrigation of deep water wells in areas without electricity
2. Transportation field
Such as navigation lights, traffic/railroad signals, warning lights/traffic signals, street lights, high-altitude obstacle lights, highway/wireless telephone booth railway, noStaff are on duty to provide eelectricity, etc.
3. Communications/Communications Field
Unattended solar microwave relay stations, optical cable maintenance stations, electrical broadcast/communications/messaging systems; telephone photovoltaic systems for rural operators, small communication machines, soldier GPS power supply, etc.
IV. Oil, marine and meteorological fields
oil pipelines and tank door cathodic protection solar energy systems, oil drilling rig lifespan and emergency power supplies, marine detection equipment, observation meteorological/hydrological equipment is waiting.