Conduit steel wire helps protect wires from physical shock, explosion-proof, has a long life, saves replacement maintenance costs.
In the field of construction, all types of construction materials used to construct works are required to meet certain specified standards to ensure the best quality for the project. This standard is regulated by a national or international organization such as ANSI, UL, BS …
Before being put on the market, construction materials will be tested for quality based on the set standards. Consumers can rely on those standards to evaluate quality products and make appropriate choices.
With steel wire and cable, this is a group of electrical equipment products, executing for mechanical and electrical items such as industrial parks, export processing zones, commercial centers, buildings, offices … Therefore, the standards of steel pipe has a very practical meaning in bringing quality steel wire pipe products to the market.
UL standard
UL (Underwriters Laboratories) is a global scientific corporation founded in 1984 with more than a century of professional experience in innovating safety solutions, helping to protect people, products and facilitating trade.
UL has used accurate scientific processes and the highest ethical principles, to provide reliable results to consumers around the globe. In 2014, UL has customers in 113 countries with more than one billion consumers in Asia, Europe and North America receiving safety information from UL, with 159 laboratories providing certification globally with 10,842 employees in 44 countries.
UL certification is of great value because it is evaluated by a reputable and widely recognized global scientific corporation not only in the United States and North America, but also in many territories, countries and regulators. Reasonably, consumers trust as a certification for a safe product.
In Vietnam, constructions designed by design consulting groups and investors require electrical conduit to be UL certified.
ANSI standard
ANSI standard is a set of American standards issued by ANSI (American National Standards Institute). ANSI promotes the development of American national standards through accreditation of standards organization processes.
The procedures adopted by standards organizations to develop American national standards, which are recognized by ANSI, must be those that meet ANSI’s essential requirements for fairness, publicity, consensus and correct order.
Products meet quality standards of ANSI / UL
Three types of steel conduit EMT, IMC, RMC wire have the advantages: withstand strong impact, good fire resistance, prevent fire spread, protect electrical wires and internal power sources. Therefore, depending on the purpose and environment of use, the M&E engineer will select the appropriate type of steel wire pipe suitable for factories and high-rise buildings. In the US, UL & ANSI standards are considered equivalent and commonly used. Electrical pipes of UL / ANSI standard are commonly used in North American countries such as USA, Canada, Thailand, Philippines …
Dimensions of three types of steel conduit wire EMT, IMC, RMC:
BS standard
This is a British standard set up by the British Standards Institue (BSI). BS standards has more than 1,500 standards issued including many key topics such as: civil construction, materials and chemicals, electronics, consumer products and services …
Products that have met BSI requirements will be re-tested by another accredited quality management system and will be regularly re-tested to ensure they always comply with this standard. .
IEC standard
IEC (International Electrotechnical Commission) – The International Electrotechnical Commission was established in 1906. The organization’s original headquarters was based in London, now moved to Geneve based in 1948. The goal of IEC is to promote promoting international cooperation on standardization in the field of electricity and electronics and related issues such as certification of electrical standard conformity and support for international understanding.
IEC has a close cooperation with many international standardization and professional organizations such as ISO, International Telecommunications Union -ITU; Cenelec – European Technical Standardization Committee. In particular, between IEC and ISO has established an agreement on the scope of activities of each organization. Under this agreement, the scope of IEC activities covers standardization in the field of electricity and electronics.
IEC electric wire steel pipes are commonly used in European countries and some other countries.
Product quality according to BS standards
JIS standards
JIS Standards (Japan Industrial Standards), also known as Japanese Industrial Standards, are a set of very specific standards and guidelines that are strictly used in Japanese industrial activities.
The standardization process is coordinated by the Japan Industrial Standards Committee and published through the Japan Standards Association.
Products meet quality standards of JIS
JIS standard steel wire pipes are commonly used in Japan, Taiwan, Indonesia …
It is one of the solutions that the Southern Power Corporation (EVNSPC) is studying and implementing to contribute to ensuring electricity supply for aquaculture in the South
Statistics of EVNSPC, in the period of 2015 – 2017, the maximum load capacity of agro-forestry-fishery component increased by an average of 9.5%; The average growth rate of commercial electricity is about 10.8%.
According to Mr. Nguyen Phuoc Duc – Deputy General Director of EVNSPC, over the past time, the Corporation has made efforts to provide adequate electricity to serve the needs of aquaculture in the South, but the electricity supply for shrimp farming still faces a problem. difficulties such as: Planning of shrimp farming areas not yet complete; the supply of electricity for seasonal shrimp farming faces many difficulties due to small-scale farming households, the simultaneous release of shrimp makes the load suddenly increase, causing a local overload; The majority of shrimp farmers use the main lighting source to run the motor to pull the water blower to provide oxygen to the shrimp, leading to the overload of the regional grid, …
The Corporation has issued documents to subordinate units to research and propose to deploy the use of solar energy to supply electricity for shrimp farming. At present, a research plan to integrate solar panels with the fan motor.
With the pressure of power supply to shrimp farming areas in the South and Mekong Delta is very large, the construction of renewable energy projects in general and solar power in particular with appropriate scale will contribute to meeting the demand for electricity production, promoting and developing the shrimp farming industry in the region.
Along with investing hundreds of billions of dong to upgrade the power grid, over the past time, the Corporation has implemented the project “Supporting electricity savings for shrimp farmers in the Mekong Delta region and some provinces. Southern region in the period of 2016-2018 ”. In particular, the two solutions “Replace U shaft bearing (oxygen generation) with roller rollers” and “Coaxial motor with fan assembly, combined with roller support. Rotating instead of U-shaped roller bearings ”has brought the value of billions of dong / year to shrimp farmers, through a pilot in Soc Trang province.
In the period of 2018 – 2019, EVNSPC continues to set up a project to pilot a new solution “replacing high-performance electric motors, combining speed governors with roller replacement and coaxial fan assembly with motor shaft” for with shrimp farmers in Soc Trang, Ca Mau and Bac Lieu provinces. This is the combination of the new model with two models that have been proved effective in Soc Trang province.
It is one of the solutions that the Southern Power Corporation (EVNSPC) is studying and implementing to contribute to ensuring electricity supply for aquaculture in the South.
Many power-saving programs of the electricity industry have helped the aquaculture industry promote effectiveness – Photo: Đại Dương.
Statistics of EVNSPC, in the period of 2015 – 2017, the maximum load capacity of agro-forestry-fishery component increased by an average of 9.5%; The average growth rate of commercial electricity is about 10.8%.
According to Mr. Nguyen Phuoc Duc – Deputy General Director of EVNSPC, over the past time, the Corporation has made efforts to provide adequate electricity to serve the needs of aquaculture in the South, but the electricity supply for shrimp farming still faces a problem. difficulties such as: Planning of shrimp farming areas not yet complete; the supply of electricity for seasonal shrimp farming faces many difficulties due to small-scale farming households, the simultaneous release of shrimp makes the load suddenly increase, causing a local overload; The majority of shrimp farmers use the main lighting source to run the motor to pull the fan to provide oxygen to the shrimp, leading to the overload of the regional grid, …
The Corporation has issued documents to subordinate units to research and propose to deploy the use of solar energy to supply electricity for shrimp farming. At present, a research plan to integrate solar panels with the fan motor.
With the pressure of electricity supply to shrimp farming areas in the South and Mekong Delta is very large, the construction of renewable energy projects in general and solar power in particular with appropriate scale will contributing to meeting the demand for electricity production, promoting and developing the shrimp farming industry of the region.
Along with investing hundreds of billion dong to upgrade the power grid, in recent years, the Corporation has implemented the project “Supporting electricity savings for shrimp farmers in the Mekong Delta region and some provinces. Southern region in the period of 2016-2018 ”. In particular, the two solutions “Replace U shaft bearing (oxygen generation) with roller rollers” and “Coaxial motor with fan assembly, combined with roller support. Rotating instead of U-shaped roller bearings ”has brought the value of billions of dong / year to shrimp farmers, through a pilot in Soc Trang province.
In the period of 2018 – 2019, EVNSPC continues to set up a project to pilot a new solution “replacing high-performance electric motors, combining speed governors with roller replacement and coaxial fan assembly with motor shaft” for with shrimp farmers in Soc Trang, Ca Mau and Bac Lieu provinces. This is a combination of the new model and two models that have been proven effective in Soc Trang province.
Currently facing the challenge of climate change, depletion of mineral resources, so renewable and clean energy sources are gradually introduced to replace mineral energy sources. One of those energy sources is the solar energy.
Head of the topic: Long Duy Nguyen- ĐC1201
GVHD: GS.TSKH Hoan Ngoc Than
The goal of the topic:
Constructing a solar energy system to supply a family with small loads
Novelty, originality and creativity of the topic:
– Use buck converter and boost to perform transform and stabilize voltage
– Use solar energy into lighting
Research situation at home and abroad:
Our country has developed the source of solar power since the 1960s, until now completely mastering solar power technology. However, despite having large solar resources, after a period of development, the application of solar-powered devices to life, with the purpose of saving electricity, Also just at the level of the leg in place
and have not been exploited effectively due to lack of funding and have not been widely disseminated to businesses and consumers.
Research content of the topic:
Research method and equipment:
Use a buck converter to stabilize the output voltage when the input changes to charge ăcquy. From the ăcquy, we use boost boosters to increase the voltage, so the voltage is 220 v to use lighting equipment in daily life.
Ability to deploy applications, deploy research results of the topic:
Research on the use of solar batteries is getting more and more attention, especially in the context of energy shortage and urgent environmental issues. Solar energy is considered as the preeminent form of energy in the future, it is a clean energy source, available in nature. Therefore, solar energy is increasingly used widely in countries around the world.
Research results of the topic:
1. Contributing in science, serving training:
– Additional equipment for the school’s teaching
– Contribute to solving the problem of electricity shortage in daily life
2. Contribution related to economic development:
– Save energy costs for lighting
3. Social contributions (solutions to social problems):
– Contribute to solving the problem of energy shortage
I. SUBJECT INFORMATION
Tên đề tài: Research, design and installation of small scale solar power station model with grid connection electricity
Head of the project: TS. Son Thanh Tran
Preside organization: Da Nang Energy Saving Center and Technology Transfer Consultant
Acceptance year: 2014
II. QUESTION
Exploiting renewable energy sources, especially solar energy to supplement and partially replace exhausted fossil energy, while minimizing environmental pollution is a real need for every country. In Vietnam, in the direction of the national energy development strategy that the government has set for 2020, the vision to 2050 has clearly indicated “to strive to increase the proportion of new and renewable energy sources to about 3%. total primary energy in 2010, about 5% in 2020 and about 11% in 2050 ”. Provinces of South Central and Southern regions have abundant solar energy sources which can be effectively exploited to supplement the electricity consumption demand of electricity loads.
In the general development trend of Da Nang, with the goal of becoming an environmental city by 2020, besides the favorable conditions, Da Nang City is facing many difficulties and challenges. This raises the field of Science and Technology in general and the field of economical and efficient use of energy in particular many issues that need to be researched in order to propose feasible policies and solutions, contributing to promoting business The city’s economy and society have developed quickly and sustainably.
Da Nang has an average number of sunshine hours per month of 177 hours and an average radiation intensity of 4.89 kWh / m 2 / day. Thus, the potential of solar energy in Da Nang is assessed to be relatively high, consistent with the orientation of solar energy application in the city.
III. OBJECTIVES OF THE STUDY
Research, design and installation of small-scale solar power stations with grid connection electricity (provided for offices and administrative areas); Assessing the stability of the system, the influence of the model on the grid and electric load of the consumer; Building a model for replication in Da Nang.
IV. SUBJECTS, SCOPE AND RESEARCH CONTENT
1. Research subjects
– Subjects of the study: The system uses solar photovoltaic panels to collect solar energy, smart devices that convert from DC to AC to create 220V current (standard sine wave form) to supply electricity to households. The project uses new technology to create a direct supply of electricity to consumers without using storage batteries, when the electricity source is lacking, it will be supplemented from the electricity on the grid to put into use;
– Survey subjects: office agencies and administrative areas.
2. Research scope
Study to build a solar power model (PV) using photovoltaic cells for small and medium loads of office and administrative area. The system will ensure a part of electricity for household consumption, the shortage will provide additional power from the grid.
3. Research content
– Assessing solar potential in Da Nang;
– Surveying and assessing load demand in some units (office offices and administrative areas);
– Research and choose solutions and technologies to exploit solar energy for electricity generation without batteries in offices and administrative areas;
– Research and designing a small-scale solar power station model with grid connection consume;
– Bidding for the supply of equipment, installation and operation of small-scale solar PV power stations with electricity grid connection (experimental installation at the Department of Science and Technology);
– Research the effect of the model on the grid and power consumption load;
– Analyzing environmental economic – social efficiency
V. RESEARCH RESULTS
1. Surveying and assessing the load demand of some units
2. Contents of the current energy consumption status survey of some offices / offices of Danang city
3. Research and select solar power technology
4. Calculation, design and installation of models
What is the electrodynamic system that controls the lighting?
We already know the indispensable electrical system in every building, the construction. Electrodynamic control system for lighting is a special electrical system for clean rooms to meet the fields of required industries. This system includes dynamic systems, lighting systems, light control systems, lightning systems.
Electrodynamic system
Supplying main electricity for clean room system, including: electric cabinet system, medium voltage lines. Transformers, measurement cabinets, electric meters. Electrical switch socket system.
Clean room lighting system
Clean room lighting system includes 2 types of floating lights and ceiling room lights.
+ Floating clean room lights are floating: The product line is mounted directly on the wall or ceiling. The advantage is moisture, dust in the room, easy installation and maintenance of the lamp. The reflector and lamp bracket are made of high-grade aluminum to ensure a long lifetime and a high aesthetic.
+ Clean room ceiling light: This is a high-quality product line of the latest clean room lighting system with effective anti-dust, water-proof, easy to maintain and clean lamps. The body of the lamp is made of stainless steel, high quality powder coating, ensuring sure, no dirt.
Lighting control system
This system includes:
+ Cable ladder system or AHU system is an air heat exchanger used in the systemhvac for clean room. This system has the function of adjusting the balance of the parameters in the room: temperature, humidity to suit the clean room standard.
+ Room pressure control system is the system through the central processor that controls the room pressure to adjust the pressure to best suit each type of clean room.
+ Automatic open / close control system to automatically open / close in clean rooms.
Lightning collecting system
Any electrical system must have this system. The same is true of the electrodynamic system that controls the light , with lightning collection systems to prevent lightning from causing harm to clean room lighting control devices. Through objects capable of conducting electricity in different shapes, it is in direct contact with the ground and connected by metal wires to create electrical connection, bringing about a fixed resistance.
Application of electrodynamic lighting system
+ Dynamic light control system is applied in many different fields, in all areas of clean room, it also helps clean room equipment works effectively from there, balancing the temperature, pressure, humidity in the room and the ability to eliminate busy dust, insects, viruses and bacteria are very good for clean room space.
+ In health: For hospitals, light examination and treatment facilities are extremely important. In particular, in operating rooms to help the surgical process become more accurate, not affected by external factors. In addition, ensure the clean room system and equipment operate continuously, keeping a stable balance of environmental factors such as temperature, humidity, pressure, amount of air dust to ensure health for the patient. and avoid spreading infectious diseases in hospitals when eliminating harmful viruses and bacteria.
+ In the research and manufacturing industries: This system helps ensure the production research process takes place accurately, without being carelessly neglected by external influences. In the electronics industry, the construction of electronic circuits is very difficult, requiring clean electric room to control lighting.
+ In food, packaging, pharmaceutical and cosmetic manufacturing plants: In order for the production and preservation process not to be influenced by external factors, the quality and effects of the products will be lost. The system of electrodynamic equipment that controls light is a perfect choice in these industries. In addition, the lighting system helps the production process be more accurate thanks to the special lighting system that balances all environmental factors in the production process.
Advantages of using electrodynamics system to control lighting
Using electrodynamics system to control lighting in clean rooms brings many advantages compared to other lighting equipment systems.
+ Guaranteed: Using this system ensures the rooms always meet clean room standards. Meeting the requirements of the areas that need clean rooms as well as good protection of human health.
+ Economical: Thanks to integrating many features from electric lighting to dust particles in the air, adjusting every balance of the environment in the room. Instead of using many devices, other machines use this system to minimize power consumption, saving electricity and installation costs to the maximum.
+ Comfort: This is a high-tech system, automatic control, so it brings comfort to people. The automatic lighting, ensuring the balance of temperature, humidity, pressure, eliminating all dust and dirt in clean rooms brings comfort to people.
+ Versatility: The electrodynamic lighting system has high versatility to meet all the requirements for a clean room. Not only providing adequate lighting for the room, but also helps eliminate air dirt, remove all viruses and bacteria, ensuring the balance of all other elements in the room.
Price
On the market today there are many product lines, electrodynamics systems that control lighting. Therefore, there are many types, models, different designs that lead to significant price differences. This causes many difficulties for the user to choose, Therefore, it is extremely important to find out the address for you to provide reputable and reliable lighting power system.
If you want to consult about products, please contact SHD company – the design and construction unit of industrial projects, pharmaceutical factories, medical equipment, packaging, real products, electronics, … meet GMP-WHO, HACCP, ISO standards for the most modern clean room today.
For a long time, we humans are relying too much on fossil energy sources, especially oil. Therefore, scientists are constantly exploring to replace them with new sources of energy that are cleaner, safer and more sustainable.
Hydrogen raw material is the highly expected solution. However, previously, to produce hydrogen, people need rare metals like platinium and iridium. Therefore, the cost of generating hydrogen is too great.
But it will all become a thing of the past with new equipment made by experts from Stanford University. This is an electrolysis machine that separates hydrogen from water at extremely low cost. The materials that make up the device only include a nickel, iron and a 1.5V battery.
The device works continuously for 7 days without any problems!
The reason electrolysis equipment produces a lot of hydrogen is by the construction of two electrodes from nickel – iron oxide. The spread of particles into metal particles pressed together increases the contact area in the water of the poles. As a result, hydrogen is produced more and consumes less energy.
Chemical mechanism when electrolytic water
Yi Cui, a Stanford professor of materials science and engineering, commented, “This process creates very strongly connected microscopic particles, so the catalysts will have good and stable electrical conductivity. Moreover, the use of nickel and iron catalysts have more advantages because of low cost.
Haotian Wang, the owner of the invention, said that the electrolytic device is very stable, can maintain itself for 1 week with an efficiency of 82% at room temperature.
On the morning of May 18, 2015, University of Technology (Hanoi National University) announced information about the microchip product VNU-UET VENGME H.264 / AVC @ 2014 (hereinafter referred to as VENGME H.264 / AVC). This is Vietnam’s first dedicated video coding IC.
The project, chaired by Assoc. Prof. Tran Xuan Tu, has designed and built a hardware architecture to implement video encoding function compatible with H.264 / AVC standard for mobile devices. After the design was successful, the blueprint was sent for production at Global Foundry with 130 nm CMOS semiconductor technology.
VENGME H.264 / AVC is the most widely used specialized generation IC in the world today and has a very high complexity, integrating over two million logic ports (equivalent to 8 million transistors). ). In addition to approaching and mastering the design technology to meet the standard coding function of the IC, the team also has some development of its own optimal solutions, such as 4-stage pipeline treatment techniques, methods data reuse, computation techniques in the process of data transmission between basic blocks, low power design techniques.
Video encoding chip VNU-UET VENGME H.264 / AVC @ 2014 was designed and manufactured by the research team of Assoc. Prof. Tran Xuan Tu. (Photo: Bui Tuan).
Microchips have some outstanding features compared to other technology products in the application field being researched and deployed in the world in terms of performance, energy consumption and design cost. It can handle real-time videos of up to HD 720p resolution at 100MHz, with a relatively small power consumption (53 mW). These creative contents are the basis for the author group to publish 10 articles in the ISI / Scopus system and be interested by the international scientific community, cited up to 26 times.
Through research, the University of Technology has built a relatively strong scientific staff, mastered integrated circuit design technology and is capable of solving modern technology issues, allowing deployment. design important circuits for the field of national defense and security with internal resources.
The VENGME H.264 / AVC video signal chip is designed to target applications such as security cameras, traffic cameras, field surveillance cameras or simply buildings, schools, and surveillance cameras. public places … and mobile devices like smartphones, video cameras. At the ceremony, the University of Technology and Saigon Smart Solutions Co., Ltd. signed an agreement on technology transfer and application development cooperation for VENGME H.264 / AVC.
The technology products of the project have also been partly shared with the Institute of Electronics and Informatics under the Atomic Energy Commission (CEA-LETI) of the Republic of France to continue developing in the direction of reducing the power consumption. – one of the increasingly demanding requirements of green technology-driven mobile devices.
Nguyen Thanh Binh, Director of the Department of Science and Technology (Government Cipher Department), said that Cipher Committee also set a target to design an IC for its use soon. “We have had a meeting with Associate Professor Tu and found that the ability to cooperate after the announcement was very good. Although the road to the product is still long, this is the first step of the technology development orientation. High quality technology gradually replaces the outsourced labor, “Mr. Binh said.
“The national product development program is oriented towards microchip development, the Technology Innovation Fund also aims to develop electronic circuits as one of the key directions. The Ministry of Science and Technology will therefore facilitate so that research and training units can participate in the programs of the Ministry of Science and Technology together “, said Mr. Nguyen Van Tang, representative of the National Product Development Program Office (Ministry of Science and Technology). ), affirmative.
Microchips are a key part of all industrial products, especially electronics, and can be likened to “industrial rice.” Proactively producing diversified electronic circuit boards and updating the world’s most modern technology will enhance the value of electronic products made in Vietnam with a profit of up to 30%. The successful research and manufacturing of ICs also contributes to the training of high quality human resources for the knowledge economy, reducing the import of electronic components and technological solutions, creating photo products. and greatly affect the development of the country’s economy.
With this product, Vietnam can also master electronic technology for national security and defense, design and manufacture important electronic circuits in weapons systems, military equipment, and navigation systems. pepper; information security. These are issues that cannot be ordered or hired by foreign designers and manufacturers.
Mr. Nguyen Huu Duc, Vice President of Vietnam National University, Hanoi, assessed that the research team of Associate Professor Tran Xuan Tu has incorporated the perspectives on practical research and international integration (derived from practical requirements). of the country, but should be implemented in an international standard approach); basic research and technological development with high level (ensuring the discovery of new knowledge, new solutions of publication value in international journals, or registration of inventions and inventions) and Applied research sites with high scientific content.
“Along with the development program of IC industry in Ho Chi Minh City, VENGME H.264 / AVC video chip product of Hanoi National University contributes to empowering Vietnam on the real map. chip production of the world, consolidating the 3rd position in the ASEAN region, Hanoi National University will continue to support and invest for the IC’s research and application development group to manufacture and develop the New generation of ICs can compete globally, “said Professor Nguyen Huu Duc.
