25 Jun

The difference between C profile steels and z purlin steels

With the increasing popularity of steel structures, the amount of C- and z purlin steels has also increased, and what is the difference between C profile steels and Z profile steels? Here gives you an important introduction to the difference between c-profile steel and z-profile steel:

1.The angles of Z-shaped steel and C-shaped steel are different. C-shaped steel is 90 degrees and Z-shaped steel is less than 90 degrees. Therefore, when the slope of a certain slope is used, it is necessary to combine the force knowledge to consider the angle of the purlin. The slope is large and Z-shaped steel can be used. Make full use of its bending resistance.

The difference between C profile steels and z purlin steels

2.Compared with the z purlin steel section, the mechanical properties of the C-shaped steel section are quite different, and the connection with the steel frame is mostly bolted. The calculation must be considered as simple. Therefore, from the perspective of stress state, structure and calculation results, the latter is more reasonable. Therefore, in addition to the door and window openings and other special nodes, the z purlin steel section should be preferred.

3.When the slope of the roof is small, the flexural section modulus of the Z-shaped steel purlin is slightly larger than that of the C profile steel, but the difference is not large. When the slope of the roof increases, the z purlin steel is symmetric with respect to the vertical direction. Big. Therefore, the Z-shaped purlin is suitable for roofs with a large slope.Steel Profile Manufacturer

4.For the wall, there is no big difference between choosing Z-shaped steel or C-shaped steel. If the purlin is to be made into a continuous member, it is better to have a Z-shaped purlin because it is easy to overlap.

16 Jun

Limitations of solar photovoltaic systems

Solar photovoltaic systems, also known as photovoltaics, referred to as photovoltaics (photovoltaics; “photo-” light, “voltaics” volts), refer to the use of photovoltaic semiconductor materials to convert solar energy into direct current electrical energy. The core of photovoltaic facilities is solar panels. At present, semiconductor materials used for power generation mainly include: single crystal silicon, polycrystalline silicon, amorphous silicon, and cadmium telluride. Since countries have been actively promoting the application of renewable energy c purlin manufacturer in recent years, the development of the photovoltaic industry is very rapid.

Limitations of solar photovoltaic systems:

1.production process

The raw materials of solar panels are the same as those of computer chips. A large amount of energy, toxic and hazardous chemicals are required in mass production. Chemical substances are mainly controlled by laws and regulations at the location of the factory. Some solar plants have installed solar systems that produce solar panels using clean energy from solar systems.

Limitations of solar photovoltaic systems

2.Impact on the grid

As of December 2017, more than 31% of residents in Queensland, Australia, have rooftop solar systems with an average installed power of more than 3.5 kW (the world’s number one). However, the high solar system penetration rate also causes problems in the grid voltage. Residential areas have low electricity consumption at noon, mainly to sell electricity to power companies. Traditional power grids do not consider two-way power delivery. When the electricity in the residential area is transmitted back to the grid, the voltage will gradually rise and may exceed the range of electrical equipment. There are ways to solve this problem in scientific research, but there are various cost considerations, for example, an additional voltage control device in the medium voltage grid.

3.Impact on energy investment and electricity fee management

The problems in real life are often complicated and varied, and the reasons are complicated. The same is true for energy investment and electricity tariff management, and there is no universal use for every solution. Investment in solar energy systems may be a good option. If the local sunshine is sufficient, electricity prices are high and prices continue to rise, the government supports it financially or financially, and electricity can be sold back to power companies (Australia and Germany). Return on investment is often the main consideration for energy investment. But systematic inspection, evaluation and analysis may reveal that a comprehensive package Steel Profile Suppliers is the most appropriate under current market conditions. For example, improvements in energy efficiency through building construction, improvements in equipment operations, and investment in solar systems may provide the best return on investment for homeowners.