It is not good for self-built houses in rural areas to install photovoltaics.
Photovoltaic solar energy production relies on the Volt effect generated by semiconductors inside solar panels. Since the photovoltaic power generation equipment itself is very heavy, if the roof structure is not reinforced at the beginning of the design, it may cause damage to the roof structure, especially if it is of an old house, the roof may be damaged.
To install the photovoltaic power system brackets, you must first drill holes on the roof. Drilling will destroy the original waterproof layer of the house. If the waterproof layer is not redone, water will leak. when it rains. Due to the screws and holes there are gaps in between and the waterproofing process requires very high standards. If it is too thick, it affectswill affect the installation, and if it is too thin it will have no effect. The second waterproofing effect is much less effective than the first and will increase the risk of water leakage.
The principle of photovoltaic power generation
The main principle of photovoltaic power generation is the photoelectric effect of semiconductors. When a photon irradiates a metal, all of its energy can be absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the Coulomb force inside the metal atom to do work, escape from the metal surface and become. a photoelectron.
Silicon atoms have 4 outer electrons. If atoms with 5 outer electrons, such as phosphorus atoms, are doped with pure silicon, they become an N-type semiconductor; if 3 atoms are doped with pure silicon, the atoms; with external electrons, suchs as boron atoms, form a P-type semiconductor. When P and N types are combined, a potential difference is formed at the contact surface, thus becoming a solar cell. When sunlight hits the P-N junction, current flows from the P-type side to the N-type side, forming an electric current.
The photoelectric effect is an important and magical phenomenon in physics. Under the irradiation of electromagnetic waves above a certain frequency, the electrons contained in certain substances absorb energy and escape to form an electric current, that is, photoelectricity.
Can self-built houses in rural areas be equipped with solar power plants?
**State supports energy production installation photovoltaic solar distributed on rural roofs* *. According to the “Guidelines on support for photo energy production installationdistributed in rural houses and the constant promotion of the construction of rural photovoltaic power plants" of the National Development and Reform Commission (Fagai Prize [2016] No. 1077), the state will support the power generation facility photovoltaic distributed in rural houses through subsidies and regularly promote the construction of rural photovoltaic plants.
In addition, according to the “Opinion of the National Development and Reform Commission on Using Price Leverage to Promote the Healthy Development of the Photovoltaic Industry” and the "Notice of the National Energy Administration on Issuing Interim Measures for the Management of Distributed Photovoltaic Power Generation Projects", self-built rooftop photovoltaic power generation by farmers is a distributed photovoltaic energy production project built byindividuals using their own residences and built in residential areas. Our province implements a full power subsidy policy for distributed photovoltaic power generation, and the electricity price subsidy standard is 0.42 yuan per kilowatt hour (including tax), will be paid through from the Renewable Energy Development Fund and transferred by the electricity network company.
Therefore, the installation of distributed photovoltaic solar power generation on rural rooftops has received state support.
In agricultureVillages are generally divided into horizontal roofs and sloping roofs. It should be noted here that the roof should preferably be clear at the front and rear and should have sufficient load-bearing capacity. Household electricity is usually alternating current, while solar energy generates direct current, which cannot bedirectly supplied to domestic circuits. It must be converted from AC to DC via an inverter before it can be used.