Products such as sound attenuators, blast valves and dampers, ventilation and acoustic louvers, sandtrap louvers, duct heaters, industrial dampers, and a significant number of other products of this institute can be used for industrial applications.
You can download the introduction letter for industrial products by referring to the address: about us / introduction letters / industrial introduction letter or by clicking here. In addition, you can increase your knowledge about industrial products, vendor lists, certificates, and large projects in this field implemented by Shahrokhi Technical Institute.
You can also get in touch with the relevant experts through the contact number and email to get more information
Yes, Shahrokhi Technical Institute has had a very active, extensive, and influential presence in the supply of air control and distribution equipment in the rail transport sector. Large projects such as Lines 3, 4, 6, and 7 of Tehran Metro, Mashhad Metro, Line 1 of Isfahan Metro, Line 1 of Shiraz Subway, Ahvaz city train, Mashhad city train, etc. are in its portfolio.
Among the best-selling products in this field, we can mention smoke dampers, fire dampers, sound attenuators, ventilation louvers, etc. You can see the specialized information on this category of products in the products section of the website.
You can also get in touch with the relevant experts through the contact number and email to get more information.
Sandtrap Louvre is suitable to be used in a dusty and sandy environment. The efficiency and operation of this type of louver will be at low airspeed. Therefore, it is recommended to consider the largest possible size when designing and choosing the sandtrap louver. (Due to 30% of the useful surface, the pressure drop must be calculated in the design. The airspeed on the vane should not exceed 1.7 m/s.) Sandtrap louvers can prevent snow and rain from entering the building. It is also possible to provide a bird net or insect net behind the louver.
To get more information about this product, click here and get to know the technical specifications, how to install, limitations, etc
A clean room is a very clean and suitable place that is under control in terms of the number and size of dust particles suspended in the air and environmental conditions such as humidity, cold, heat, and even pressure. With the advances that are made day by day in various scientific and industrial dimensions, highly sensitive and precise equipment and devices are made that cannot be made without a clean room. The use of updated and new air conditioning products is a necessity for a clean room.
Additionally, Shahrokhi Technical Institute has products such as swirl diffusers, filter boxes, exhaust diffusers, operating room return grilles, VAV boxes, and CAV boxes in its product portfolio in this field. Moreover, Shahrokhi Technical Institute has recently made significant progress in this field and for the first time in Iran has designed and produced a new product named laminar flow diffusers. This product is a new generation of uniform air pressure distribution devices in the environment, which are designed for the operating room of the hospital in such a way that the environment on the operating bed and its surroundings become a space free from germs, viruses, and other contaminations and provide the comfort and well-being of the surgeon. Therefore, this series of devices can control different levels of pollution and create uniform air throughout the room.
The air handling unit is one of the most important components of air conditioning systems. The air handling unit consists of different parts such as a filter, divider box coil, and fan section. The fan is the most significant part of an air handling unit with the help of which the fan rotation and air circulation are done.
In ventilation systems such as air handling units, many factors lead to the reduction of static pressure, the most important of which are as follows:
Air friction in ducts, shear stresses, and turbulent flows in straight paths (viscosity effect)
Sudden changes in flow separation speed in elbows, secondary to main connections, transformations (inertia effect)
The pressure drop of the whole system is equal to the sum of all the pressure drops. The total pressure is equal to the sum of the pressure caused by the effect of viscosity and the pressure drop caused by the effect of inertia.
Pressure drop is the resistance to airflow in an open damper and increases with the increase of turbulent flow. The total airflow resistance in the system must be considered when designing air-moving devices such as fans.
The experts of Shahrokhi Technical Institute design and select the required actuators according to the needs of the projects, the place of use in different environments, and the dimensions of the damper. These motors have UL standards and are among the best-selling brands of Belimo, Siemens, and Schischek.
These actuators are mounted in products such as fire dampers, smoke dampers, blast dampers, VAV boxes, control dampers, and MPRD (Motorized pressure relief dampers).
Yes. All dampers of the HVAC system, such as control dampers, back draft, fire dampers, smoke dampers, and smoke and fire dampers affect the final performance of the air system. Considering the importance of building high-energy-saving buildings, the classification of dampers in terms of leakage rate is of high importance.
Dampers leak from two places: between the blade and the body (an area called the “jamb”), and leakage between the blades.
Therefore, low-leakage dampers are usually manufactured with air-tight rubber seals on the blades and the area between the body and the blade. The type of air-tight rubbers can have a large effect on the amount of air leakage.
Damper manufacturers test their products based on the AMCA 500-D standard entitled “Laboratory Methods for Testing Dampers for Rating”. This standard is a reliable source for the dampers Test. Many reputable laboratories in the world can test dampers according to the AMCA 500-D standard.
Leakage classification based on UL standard:
The UL555S Smoke Damper standard is a standard for testing smoke dampers to be used in smoke control systems. This standard provides the leakage class of smoke dampers and smoke and fire dampers. (These dampers must meet the requirements of both UL555 and UL555S standards.)
The leakage classification in the two AMCA 511 and UL555S standards is similar, except for leakage class 1A, which is not defined in UL555. Moreover, the leakage pressure in this standard starts from 4 inches of water. In conclusion, leakage classification information helps the buyer, contractor, and building owner select the right damper.
The airfoil blade is stronger and can withstand higher pressures when the blades are closed, and fewer pressure drops when the damper is open. Because the air flows slowly in it. However, the V-groove blade creates more pressure drop; Because the airflow across it is more turbulent and it also produces more noise at increased speeds.
The Aerodynamics Laboratory of Shahrokhi Technical Institute has more than 10 years of cooperation experience with the General Directorate of Standards of Tehran Province as a collaborating laboratory based on national standards 7693 and 7695 in the field of air distribution. In addition, it has a certificate of standard 17025 from the National Accreditation Center of Iran (NACI). Moreover, it has been very active in the field of VAV box calibration in the past few years.
It is important that during the years of service to the country’s air conditioning industry and the production of high-quality products such as fire and smoke dampers and industrial sound attenuators, this group has always tried to be closely competitive with the largest international air conditioning brands in compliance with scientific and research references. To gain this goal, the expansion and equipping of the research laboratory of Shahrokhi Technical Institute has been put on the agenda in recent years. A furnace of 1200 degrees Celsius was designed and produced in the fire test section of this laboratory to test manufactured products based on national and international standards that give confidence to the designers of fire extinguishing systems. Further, the acoustic test section is another place designed and implemented for the first time in Iran through the efforts of young and experienced engineers. Another important part of Shahrokhi Technical Institute’s Aerodynamics Laboratory is the explosion wave simulation test strip which ensures the proper operation of the blast valve and dampers as the newest products of Shahrokhi Technical Institute, in addition, to fulfill the needs of oil industries, gas, petrochemical, and power plant to receive approval from reliable centers for this strategic product.
