Solar photovoltaic technology will become one of the green energy technologies in the future. The application of solar energy or photovoltaic (PV) in China will become increasingly widespread. In addition to the rapid development of government-supported photovoltaic power plants, private investors are also actively building plants and are planning to start production in the world. Solar modules for sale. However, for the moment, many countries are still in the learning stage. Undoubtedly, in order to obtain the best profits, industry players need to learn from countries and companies that have had years of experience in solar energy applications.
The construction of a cost-effective, profitable photovoltaic power plant represents the most important goals and core competencies of all solar manufacturers. In fact, profitability depends not only on the efficiency or high performance of solar modules, but also on a set of components that seemingly have no direct relationship with the components. However, all these components (such as photovoltaic cables, solar connectors, and photovoltaic junction boxes) should be selected based on the tenderee's long-term investment goals. The high quality of the selected components can prevent solar systems from being profitable due to high maintenance and maintenance costs.
For example, people usually do not consider the wiring system that connects the PV modules and the inverter as a key component.
However, failure to use a dedicated cable for solar applications will affect the life of the entire system.
In fact, solar systems are often used under harsh environmental conditions such as high temperature and ultraviolet radiation. In Europe, sunny days will lead to a solar system with an on-site temperature of up to 100°C. Currently, we can use various materials such as PVC, rubber, TPE and high-quality cross-linked materials, but unfortunately, the rated temperature is 90°C. Rubber cables, as well as PVC cables rated at 70°C, are often used outdoors. Obviously, this will greatly affect the service life of the system.
Environmental stress
For photovoltaic applications, outdoor use materials should be based on UV, ozone, severe temperature changes, and chemical attack. The use of low-grade materials under such environmental stresses will result in fragile cable jackets and even disintegrate the cable insulation. All of these conditions will directly increase the loss of cable system, and the risk of short-circuit of the cable will also increase. In the medium and long term, the possibility of fire or personal injury is also higher.
The solar cable is an electron beam cross-link cable rated at 120°C and withstands harsh weather conditions and mechanical shocks in its own equipment. According to the international standard IEC 216, RADOX solar cables have 8 times the service life of rubber cables and 32 times of PVC cables in outdoor environments. These cables and components not only have the best weather resistance, UV and ozone resistance, but also can withstand a wide range of temperature changes (for example: from -40 °C to 125 °C).
In order to cope with the potential dangers caused by high temperatures, manufacturers prefer to use double insulated rubber sheathed cables. However, the standard version of this type of cable is only allowed in environments with a maximum operating temperature of 60°C. In Europe, the measured temperature on the roof is as high as 100°C.
The solar cable is rated at 120°C (20,000 hours can be used). This rating is equivalent to 18 years of use at a continuous temperature of 90°C, and longer service life at temperatures below 90°C. Generally, the service life of solar energy equipment should be 20 to 30 years.
For the above reasons, it is very necessary to use dedicated solar cables and components in solar energy systems.
Butterfly valves are commonly used in piping systems to control and regulate flow and speed.
The use of butterfly valve is also relatively simple, easy to operate. And butterfly valve is widely used in all walks of life, is an important control fluid system equipment.
, for air conditioning system: A butterfly valve can control the flow of air conditioning pump and piping system to adjust the temperature of the air conditioning system, so that the air conditioning system can work more efficiently.
2, for water treatment: butterfly valve can be used for water treatment process, can effectively control and adjust the flow of water pipe, carefully adjust the appropriate quality of water.
3, used for power system: butterfly valve can also be used for power system, can effectively control and adjust the flow of water and pressure in the power system, to ensure the normal operation of the power system.
4, used for heating system: butterfly valve can also be used for heating system, can control the flow of hot water piping system and adjust the temperature of the heating system, in order to meet the temperature requirements of the house.
In general, the use of butterfly valves is very wide, from air conditioning systems to water treatment, from power systems to heating systems, a variety of industries can benefit from the use of butterfly valves. Moreover, butterfly valve structure is simple, easy to maintain, for enterprises is also an affordable choice.
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