E-mail:Machine@chinaventech.com Expert for pre insulated duct CNC cutting machine.
Buy Air Ducting Supplies From VENTECH
YINGDE VENTECH INTELLIGENT EQUIPMENT CO., LTD. carefully tracks trends in the markets and thus has developed air ducting supplies that has reliable performance and is aesthetically pleasing. This product is continually tested against a wide variety of key performance criteria before going into production. It is also tested for conformity with a series of international standards.
VENTECH places emphasis on the development of products. We keep in line with the market demand and give a new impetus to the industry with the lastest technology, which is a characteristic of a responsible brand. Based on the development trend of the industry, there will be more market demands, which is a great opportunity for us and our customers to make profits together.
Air ducting supplies are crucial for efficient airflow management in various settings, including residential, commercial, and industrial environments. They consist of fittings, connectors, and accessories that ensure seamless integration and optimal system performance. These components direct, distribute, and regulate air movement, maintaining system integrity.
How to choose air ducting supplies?
- Air ducting supplies ensure optimal airflow distribution, reducing energy waste and improving HVAC system performance.
- Designed with smooth interior surfaces to minimize air resistance, enhancing airflow efficiency in residential and commercial settings.
- Choose ducts with adjustable vents or dampers to customize airflow and maintain consistent temperatures across rooms.
- Constructed from corrosion-resistant materials like galvanized steel or aluminum to withstand moisture and wear over time.
- Reinforced seams and joints prevent leaks and maintain structural integrity in high-pressure or industrial environments.
- Opt for ducting with fire-resistant coatings for added safety in areas prone to heat exposure or fire hazards.
- Air ducting supplies with antimicrobial liners inhibit mold and bacteria growth, ensuring cleaner indoor air quality.
- Easy-to-clean surfaces and removable sections simplify maintenance, reducing dust and allergen buildup in ventilation systems.
- Sealed ducts prevent outdoor pollutants from entering indoor spaces, ideal for urban environments with high air contamination.
no data
Features and Applications of Phenolic Composite Air Duct（Pre-insulated Duct）
Phenolic foam plastic is a new type of flame retardant, fireproof and low smoke insulation material. It is a closed-cell rigid foam made of phenolic resin with flame retardant, smoke suppressant, foaming agent, curing agent and other additives.
Its most prominent features are flame retardant, low smoke, and high temperature deformation resistance. It can be cast-in-place foamed, molded, and machined. It can be made into plates, shells and various special-shaped products. It overcomes the shortcomings of the original foam plastic insulation material, such as flammability, smoke, and heat deformation, and retains the characteristics of the original foam plastic insulation material, such as light weight and convenient construction.
Phenolic foam has abundant sources of raw materials, low price, simple production and processing, and wide range of products. It is suitable for large-scale cold storage, storage tanks, ships and various insulation pipes and construction industries. If it is used in factories, mines and mechanical equipment with strict fire protection requirements, it can highlight its characteristics of flame retardant, low smoke, and high temperature disparity resistance. Such as: heat preservation of ships, warships, trains, armored vehicles, papermaking, chemical industry, pharmaceuticals, etc.
Performance characteristics of phenolic foam board:
1. It has a uniform closed-cell structure, low thermal conductivity, and good thermal insulation performance, which is equivalent to polyurethane and better than polystyrene foam.
2. Under the direct action of the flame, it has carbon formation, no dripping, no curling, and no melting. After the flame burns, a layer of "graphite foam" is formed on the surface, which effectively protects the foam structure in the layer. Anti-flame penetration time up to 1 hour;
3. The applicable temperature range is wide, it can be used at -200°C~200°C in a short period of time, and it can be used at 140°C~160°C for a long time. It is superior to polystyrene foam (80°C) and polyurethane foam (110°C).
4. Phenolic molecules contain only carbon, hydrogen, and oxygen atoms. When subjected to pyrolysis, except for a small amount of CO gas, no other toxic gases will be produced, and the maximum smoke density is 5.0%. After the 25mm thick phenolic foam board is subjected to flame spraying at 1500°C for 10 minutes, only the surface is slightly carbonized but it cannot be burned through, and it will neither catch fire nor emit thick smoke and poisonous gas.
5. In addition to being corroded by strong alkali, phenolic foam can almost resist the erosion of all inorganic acids, organic acids and organic solvents. Long-term exposure to sunlight, no obvious aging phenomenon, so it has good aging resistance.
6. It has a good closed-cell structure, low water absorption and strong steam penetration resistance. Condensation does not occur when used for thermal insulation purposes (cold insulation).
7. Dimensional stability, small change rate. The dimensional change rate is less than 4% within the temperature range of use.
8. The cost of phenolic foam is low, only equivalent to two-thirds of polyurethane foam.
Application form of phenolic foam insulation material:
1. Produce phenolic foam boards/panels, and then use CNC cutting machine(Ventech pre-insulated duct cutting machine is your good choice) to cut into various duct graphics, which are used in various occasions for ducting work.
2. It can be directly produced into veneer thin board or large-scale board, which can be used for building interior decoration board or firewall, fireproof board and fireproof partition wall, etc.
3. On-site pouring of foam, which can pour insulation layers such as large storage tanks, reactors and pipelines outdoors below 15°C.
4. Spray foam on site, and use a spray gun to spray the surface of mines, tunnels and underground buildings as thermal insulation layer.
5. It can be used as the material for thermal insulation inside and outside the exterior wall and the core of the color steel sandwich panel
Welcome to contact VENTECH, China. We can provide phenolic foam boards production line and CNC cutting machine for phenolic duct cutting.
More Recommendations:
Duct Fabrication Machines
Duct Board Cutting Machine
Insulation Cutting Machine
Pre Insulated Ductwork
Phenolic Ductwork
Duct Fabrication Procedure
Duct Board Fabrication
How to Fabricate Ductwork
Types of Duct
HVAC Industry Trends
HVAC Ductwork Fabrication
Phenolic foam plastic is a new type of flame retardant, fireproof and low smoke insulation material. It is a closed-cell rigid foam made of phenolic resin with flame retardant, smoke suppressant, foaming agent, curing agent and other additives.
Its most prominent features are flame retardant, low smoke, and high temperature deformation resistance. It can be cast-in-place foamed, molded, and machined. It can be made into plates, shells and various special-shaped products. It overcomes the shortcomings of the original foam plastic insulation material, such as flammability, smoke, and heat deformation, and retains the characteristics of the original foam plastic insulation material, such as light weight and convenient construction.
Phenolic foam has abundant sources of raw materials, low price, simple production and processing, and wide range of products. It is suitable for large-scale cold storage, storage tanks, ships and various insulation pipes and construction industries. If it is used in factories, mines and mechanical equipment with strict fire protection requirements, it can highlight its characteristics of flame retardant, low smoke, and high temperature disparity resistance. Such as: heat preservation of ships, warships, trains, armored vehicles, papermaking, chemical industry, pharmaceuticals, etc.
Performance characteristics of phenolic foam board:
1. It has a uniform closed-cell structure, low thermal conductivity, and good thermal insulation performance, which is equivalent to polyurethane and better than polystyrene foam.
2. Under the direct action of the flame, it has carbon formation, no dripping, no curling, and no melting. After the flame burns, a layer of "graphite foam" is formed on the surface, which effectively protects the foam structure in the layer. Anti-flame penetration time up to 1 hour;
3. The applicable temperature range is wide, it can be used at -200°C~200°C in a short period of time, and it can be used at 140°C~160°C for a long time. It is superior to polystyrene foam (80°C) and polyurethane foam (110°C).
4. Phenolic molecules contain only carbon, hydrogen, and oxygen atoms. When subjected to pyrolysis, except for a small amount of CO gas, no other toxic gases will be produced, and the maximum smoke density is 5.0%. After the 25mm thick phenolic foam board is subjected to flame spraying at 1500°C for 10 minutes, only the surface is slightly carbonized but it cannot be burned through, and it will neither catch fire nor emit thick smoke and poisonous gas.
5. In addition to being corroded by strong alkali, phenolic foam can almost resist the erosion of all inorganic acids, organic acids and organic solvents. Long-term exposure to sunlight, no obvious aging phenomenon, so it has good aging resistance.
6. It has a good closed-cell structure, low water absorption and strong steam penetration resistance. Condensation does not occur when used for thermal insulation purposes (cold insulation).
7. Dimensional stability, small change rate. The dimensional change rate is less than 4% within the temperature range of use.
8. The cost of phenolic foam is low, only equivalent to two-thirds of polyurethane foam.
Application form of phenolic foam insulation material:
1. Produce phenolic foam boards/panels, and then use CNC cutting machine(Ventech pre-insulated duct cutting machine is your good choice) to cut into various duct graphics, which are used in various occasions for ducting work.
2. It can be directly produced into veneer thin board or large-scale board, which can be used for building interior decoration board or firewall, fireproof board and fireproof partition wall, etc.
3. On-site pouring of foam, which can pour insulation layers such as large storage tanks, reactors and pipelines outdoors below 15°C.
4. Spray foam on site, and use a spray gun to spray the surface of mines, tunnels and underground buildings as thermal insulation layer.
5. It can be used as the material for thermal insulation inside and outside the exterior wall and the core of the color steel sandwich panel
Welcome to contact VENTECH, China. We can provide phenolic foam boards production line and CNC cutting machine for phenolic duct cutting.
More Recommendations:
Duct Fabrication Machines
Duct Board Cutting Machine
Insulation Cutting Machine
Pre Insulated Ductwork
Phenolic Ductwork
Duct Fabrication Procedure
Duct Board Fabrication
How to Fabricate Ductwork
Types of Duct
HVAC Industry Trends
HVAC Ductwork Fabrication
Common problems and control measures during air duct installation
1. Installation problem of air ductsupport and hanger
Problem analysis:
(1) The length of the main and main pipes in the ventilation pipe installation system exceeds 20m, and there is no fixed point to prevent swinging;
(2) The leakage length of the screw of the support and hanger is inconsistent.
Control measures:
If the length of the main pipe exceeds 20m, anti-shake brackets shall be provided. The support and hanger should not be set at the tuyere, valve, inspection port and automatic control mechanism, and the distance from the tuyere or the insertion pipe should not be less than 200mm. Make uniform requirements on the exposed length of the harness, and cut them for different lengths.
2. Super-large air ducts did not take reinforcement measures as required by the specifications
Problem analysis:
Reinforcement measures were not taken for super-large air ducts as required by the code.
Control measures:
Reinforcement of metal air ducts: the side length of rectangular air ducts is greater than 630mm, the side length of thermal insulation ducts is greater than 800mm, the length of pipe sections is greater than 1250mm, or the single side area of low-pressure air ducts is greater than 1.2㎡, and the medium and high-pressure air ducts are greater than 1.0㎡, reinforcement measures should be taken.
3. The problem of the air duct passing through the firewall
Problem analysis:
(1) There is no wall-piercing casing where the air duct passes through the wall;
(2) The fire damper with a side length greater than 630mm is not provided with a separate fixing bracket;
(3) The distance between the fire damper and the wall is greater than 200mm.
Control measures:
(1) When the air duct passes through the fire-proof and explosion-proof walls or floors that need to be closed, the thickness of the steel plate of the embedded pipe and the protective sleeve shall not be less than 1.6mm, and the non-combustible flexible material shall be used to seal the air duct and the protective sleeve ;
(2) The fire damper is provided with an independent hanger, and the distance between the fire damper and the wall surface is not greater than 200mm.
4. Pipeline insulation problem
Problem analysis:
The insulation thickness and flatness of pipes and equipment do not meet the requirements.
Control measures:
(1) When important equipment is kept warm, due to the irregular shape, it is necessary to form a heat preservation plan in advance, accurately measure the actual object according to the heat preservation plan, and accurately cut the material (it is strictly forbidden to have more or less material), and the glue is evenly applied (it is strictly forbidden For the sake of speed, there is a phenomenon of missing glue or brushing less glue);
(2) Protruding parts such as flanges and variable diameters must be cut separately for heat preservation, and the surface should be flat. When using coils or plates, the allowable deviation is 5mm; when using smearing or other methods, the allowable deviation is 10mm; moisture-proof layer (including The end of the insulation layer) should be complete and well closed; its lap joints should run smoothly.
5. There is no thermal insulation skid between the hanger and the thermal insulation duct
Problem analysis:
There is no thermal insulation skid between the hanger and the thermal insulation duct.
Control measures:
The connection between the suspender and the bracket is fastened with double nuts. An insulating liner should be provided between the heat insulation duct and the bracket to prevent cold bridges. The thickness of the heat insulating liner should not be less than the thickness of the insulation; Anti-corrosion treatment.
More Recommendations:
Duct Fabrication Machines
Duct Board Cutting Machine
Insulation Cutting Machine
Pre Insulated Ductwork
Phenolic Ductwork
Duct Fabrication Procedure
Duct Board Fabrication
How to Fabricate Ductwork
Types of Duct
HVAC Industry Trends
HVAC Ductwork Fabrication
1. Installation problem of air ductsupport and hanger
Problem analysis:
(1) The length of the main and main pipes in the ventilation pipe installation system exceeds 20m, and there is no fixed point to prevent swinging;
(2) The leakage length of the screw of the support and hanger is inconsistent.
Control measures:
If the length of the main pipe exceeds 20m, anti-shake brackets shall be provided. The support and hanger should not be set at the tuyere, valve, inspection port and automatic control mechanism, and the distance from the tuyere or the insertion pipe should not be less than 200mm. Make uniform requirements on the exposed length of the harness, and cut them for different lengths.
2. Super-large air ducts did not take reinforcement measures as required by the specifications
Problem analysis:
Reinforcement measures were not taken for super-large air ducts as required by the code.
Control measures:
Reinforcement of metal air ducts: the side length of rectangular air ducts is greater than 630mm, the side length of thermal insulation ducts is greater than 800mm, the length of pipe sections is greater than 1250mm, or the single side area of low-pressure air ducts is greater than 1.2㎡, and the medium and high-pressure air ducts are greater than 1.0㎡, reinforcement measures should be taken.
3. The problem of the air duct passing through the firewall
Problem analysis:
(1) There is no wall-piercing casing where the air duct passes through the wall;
(2) The fire damper with a side length greater than 630mm is not provided with a separate fixing bracket;
(3) The distance between the fire damper and the wall is greater than 200mm.
Control measures:
(1) When the air duct passes through the fire-proof and explosion-proof walls or floors that need to be closed, the thickness of the steel plate of the embedded pipe and the protective sleeve shall not be less than 1.6mm, and the non-combustible flexible material shall be used to seal the air duct and the protective sleeve ;
(2) The fire damper is provided with an independent hanger, and the distance between the fire damper and the wall surface is not greater than 200mm.
4. Pipeline insulation problem
Problem analysis:
The insulation thickness and flatness of pipes and equipment do not meet the requirements.
Control measures:
(1) When important equipment is kept warm, due to the irregular shape, it is necessary to form a heat preservation plan in advance, accurately measure the actual object according to the heat preservation plan, and accurately cut the material (it is strictly forbidden to have more or less material), and the glue is evenly applied (it is strictly forbidden For the sake of speed, there is a phenomenon of missing glue or brushing less glue);
(2) Protruding parts such as flanges and variable diameters must be cut separately for heat preservation, and the surface should be flat. When using coils or plates, the allowable deviation is 5mm; when using smearing or other methods, the allowable deviation is 10mm; moisture-proof layer (including The end of the insulation layer) should be complete and well closed; its lap joints should run smoothly.
5. There is no thermal insulation skid between the hanger and the thermal insulation duct
Problem analysis:
There is no thermal insulation skid between the hanger and the thermal insulation duct.
Control measures:
The connection between the suspender and the bracket is fastened with double nuts. An insulating liner should be provided between the heat insulation duct and the bracket to prevent cold bridges. The thickness of the heat insulating liner should not be less than the thickness of the insulation; Anti-corrosion treatment.
More Recommendations:
Duct Fabrication Machines
Duct Board Cutting Machine
Insulation Cutting Machine
Pre Insulated Ductwork
Phenolic Ductwork
Duct Fabrication Procedure
Duct Board Fabrication
How to Fabricate Ductwork
Types of Duct
HVAC Industry Trends
HVAC Ductwork Fabrication
Basic design steps for air-conditioning system design and its main design procedures-part 2
Step 11: Design of air-conditioning equipment and its piping for cold-keeping and heat preservation, muffling and vibration isolation
Step 12: Engineering drawings, collation of design and calculation instructions Air conditioning heat and humidity load calculation
Air-conditioning load can be divided into air-conditioning room or area load and system load two kinds: air-conditioning room or area load that is directly occurring in the air-conditioning room or area load; there are also a number of loads occurring in the air-conditioning room or area outside the load, such as the fresh air load (new air state and indoor air state of the load generated by different), the pipeline temperature rise (drop) load (ducts or water pipes caused by the heat transfer of loads), fan temperature load (air through the ventilator temperature rise), pump temperature load (liquid through the pump temperature rise) and so on, these loads do not act directly on the room, but ultimately also by the air-conditioning load. (load caused by heat transfer from air ducts or water pipes), fan temperature rise load (temperature rise after air passes through the ventilator), pump temperature rise load (temperature rise after liquid passes through the pump), etc. These loads do not act directly on the room, but are ultimately borne by the air-conditioning system. The above loads that occur directly in the air-conditioned room or area and the additional loads that do not act directly in the air-conditioned room or area are called system loads.
Usually, according to the heat and humidity load of the air-conditioning room or area to determine the air supply or air supply parameters of the air-conditioning system; according to the load of the system to select the fan coiler, fresh air unit, air processor and other air-handling equipment and chillers, boilers and other cold and heat source equipment. Therefore, the first step in designing an air-conditioning system is to calculate the heat and humidity load of the air-conditioned room or area.
Calculation of additional loads inside and outside an air-conditioned room or zone:
1) Fan temperature rise load: When the motor is installed in the snail casing of the ventilator, after the air passes through the fan, due to the heat generated by the mechanical friction of the motor, it will result in the temperature of the air rising after it passes through the ventilator, which will lead to an increase in the cold load.
2) Temperature rise load of water pump: the temperature of air-conditioning chilled water rises after passing through the water pump, causing the cold load to increase.
3) Air duct temperature load: air through the supply and return ducts, due to the supply and return ducts by the duct insulation, internal and external temperature difference, air flow rate, duct area and other factors, will be through the duct wall heat or cold loss, resulting in air temperature through the duct temperature drop (or temperature rise). Insulated cold water (or hot water) ducts will also cause a temperature rise (or temperature drop) in the liquid through the ducts due to heat transfer through the duct walls, causing an increase in the cold (or heat) load.
4) Fresh air load: In order to ensure that the air-conditioned rooms or areas of health conditions, the need for outdoor fresh air into the room, due to the impact of the temperature difference between indoor and outdoor, this part of the new air to cause the cold (or heat) load increase.
System cooling load:
The summer system cooling load for an air-conditioned zone shall be determined by the combined maximum of the hourly cooling loads for each air-conditioned zone or the cumulative summer cooling loads for each air-conditioned zone based on the simultaneous use of the air-conditioned zones served, the type of air-conditioning system and the mode of regulation, taking into account the additional loads involved.
The combined maximum value of the hourly cooling load of each air-conditioning zone is the maximum value of the series obtained by adding the hourly loads of the air-conditioning zones in use at the same time.
The so-called cumulative value of summer cooling loads in air-conditioned zones is a direct addition of the maximum value of the hour-by-hour cooling loads in each air-conditioned zone, irrespective of whether they are used at the same time or not.
Obviously, the results calculated by the method of "cumulative value of summer cold load in the air-conditioning area" are greater than the results calculated by the method of "integrated maximum value of hour-by-hour cold load in each air-conditioning area". Usually, when the use of variable air volume centralised air-conditioning system, because the system itself has the ability to adapt to changes in the air-conditioning zone cold load adjustment, you can use the former method of calculation; when the use of fixed-air volume centralised air-conditioning system or end equipment room temperature control device fan coil system, because the system itself can not adapt to changes in the air-conditioning zone cold load, you can use the latter method of calculation.
By Sammi
Step 11: Design of air-conditioning equipment and its piping for cold-keeping and heat preservation, muffling and vibration isolation
Step 12: Engineering drawings, collation of design and calculation instructions Air conditioning heat and humidity load calculation
Air-conditioning load can be divided into air-conditioning room or area load and system load two kinds: air-conditioning room or area load that is directly occurring in the air-conditioning room or area load; there are also a number of loads occurring in the air-conditioning room or area outside the load, such as the fresh air load (new air state and indoor air state of the load generated by different), the pipeline temperature rise (drop) load (ducts or water pipes caused by the heat transfer of loads), fan temperature load (air through the ventilator temperature rise), pump temperature load (liquid through the pump temperature rise) and so on, these loads do not act directly on the room, but ultimately also by the air-conditioning load. (load caused by heat transfer from air ducts or water pipes), fan temperature rise load (temperature rise after air passes through the ventilator), pump temperature rise load (temperature rise after liquid passes through the pump), etc. These loads do not act directly on the room, but are ultimately borne by the air-conditioning system. The above loads that occur directly in the air-conditioned room or area and the additional loads that do not act directly in the air-conditioned room or area are called system loads.
Usually, according to the heat and humidity load of the air-conditioning room or area to determine the air supply or air supply parameters of the air-conditioning system; according to the load of the system to select the fan coiler, fresh air unit, air processor and other air-handling equipment and chillers, boilers and other cold and heat source equipment. Therefore, the first step in designing an air-conditioning system is to calculate the heat and humidity load of the air-conditioned room or area.
Calculation of additional loads inside and outside an air-conditioned room or zone:
1) Fan temperature rise load: When the motor is installed in the snail casing of the ventilator, after the air passes through the fan, due to the heat generated by the mechanical friction of the motor, it will result in the temperature of the air rising after it passes through the ventilator, which will lead to an increase in the cold load.
2) Temperature rise load of water pump: the temperature of air-conditioning chilled water rises after passing through the water pump, causing the cold load to increase.
3) Air duct temperature load: air through the supply and return ducts, due to the supply and return ducts by the duct insulation, internal and external temperature difference, air flow rate, duct area and other factors, will be through the duct wall heat or cold loss, resulting in air temperature through the duct temperature drop (or temperature rise). Insulated cold water (or hot water) ducts will also cause a temperature rise (or temperature drop) in the liquid through the ducts due to heat transfer through the duct walls, causing an increase in the cold (or heat) load.
4) Fresh air load: In order to ensure that the air-conditioned rooms or areas of health conditions, the need for outdoor fresh air into the room, due to the impact of the temperature difference between indoor and outdoor, this part of the new air to cause the cold (or heat) load increase.
System cooling load:
The summer system cooling load for an air-conditioned zone shall be determined by the combined maximum of the hourly cooling loads for each air-conditioned zone or the cumulative summer cooling loads for each air-conditioned zone based on the simultaneous use of the air-conditioned zones served, the type of air-conditioning system and the mode of regulation, taking into account the additional loads involved.
The combined maximum value of the hourly cooling load of each air-conditioning zone is the maximum value of the series obtained by adding the hourly loads of the air-conditioning zones in use at the same time.
The so-called cumulative value of summer cooling loads in air-conditioned zones is a direct addition of the maximum value of the hour-by-hour cooling loads in each air-conditioned zone, irrespective of whether they are used at the same time or not.
Obviously, the results calculated by the method of "cumulative value of summer cold load in the air-conditioning area" are greater than the results calculated by the method of "integrated maximum value of hour-by-hour cold load in each air-conditioning area". Usually, when the use of variable air volume centralised air-conditioning system, because the system itself has the ability to adapt to changes in the air-conditioning zone cold load adjustment, you can use the former method of calculation; when the use of fixed-air volume centralised air-conditioning system or end equipment room temperature control device fan coil system, because the system itself can not adapt to changes in the air-conditioning zone cold load, you can use the latter method of calculation.
By Sammi
Third, the precautions to be taken in the construction
1, prefabrication should pay attention to several issues
(1) clean system of thin steel plate duct bite form, it is appropriate to use the bite of the smaller single bite, corner bite and joint corner bite.
(2) plate and other more economical decontamination methods can be used detergent and water scrubbing, scrubbing must be dried immediately after scrubbing.
(3) In the process of air ducts and fittings production, must be carefully operated, so that the nibble seam to achieve continuous, tight, uniform width, no holes and dark crack phenomenon. Duct nibble seam, rivet seam, flap corners, etc. should be coated with sealant or take other sealing measures.
(4) Duct production should minimize splicing, clean duct shall not have horizontal splicing.
(5) The reinforcing frame or reinforcing bars of the air duct shall not be reinforced by convex rib method.
(6) Duct or components produced, should be closed at both ends and all openings with plastic film wrapped mouth to ensure that the transportation and installation process does not contaminate the inner wall.
2, the installation should pay attention to several issues
(1) before the installation of the duct, the duct at the construction site will be closed at both ends of the film open, and once again will be in the duct and not cleaned up the dust wipe clean.
(2) system installation is completed or suspended installation, must be closed at any time the opening of the air duct to prevent dust re-entry.
(3) clean system installation quality is good or bad with the environmental cleanliness of the construction site has a direct relationship. Especially in the cross operation with various types of work, more attention should be paid to maintain the cleanliness of the work site.
(4) flange gasket and cleaning mouth, inspection door sealing gasket material should be selected without air leakage, no ash production, good elasticity and have a certain strength of the material, the gasket should reduce the joints, the joints must be used trapezoidal or mortise and tenon joints, and coated with adhesive bonding.
(5) The flexible short pipe in the system should be made of smooth surface, non-dust-producing and airtight materials, such as rubber sheet and artificial leather.
3, duct corrosion, heat preservation should pay attention to the problem
System after the leakage of light or air leakage test for insulation, generally should be used after anti-corrosion treatment of wood, in order to ensure that the air ducts and support hangers are not in direct contact. The thickness of the wooden strip is equal to the thickness of the insulation material, so as to ensure that the bracket does not produce cold bridge. Otherwise, condensation will be formed so as to corrode the bracket.
4, the air duct through the building settlement joints should pay attention to the problem
Ducts in the building through the settlement joints should be added soft connection, generally using artificial leather or rubber sheet. Duct support, hanger is generally fixed in the building columns, beams or plates, building settlement, the bracket will be settled. The support, hanger can not be adjusted at any time, which makes the duct local torsion or shear stress, long time uneven settlement will cause damage to the duct, affecting the use of the system.
5、High-efficiency filter installation should pay attention to the problem
High-efficiency filter is the key equipment to ensure the cleanliness of the air, but also the last gate of the clean system, in the transportation and installation of various aspects should be specially protected.
(1) The high-efficiency filter requires its own good intrinsic quality, such as the metal frame filter that does not grow mold, and its finished product must be free of irritating smell.
(2) During transportation and handling, the high-efficiency filter should prevent the folded filter paper from sagging under force, and should be handled and stored in the direction of the factory mark.
(3) The inner surface of the static pressure box of the filter must be wiped clean when it is installed. In order to prevent the dust particles in the system from blowing out and then being sucked back into the system by the return air, the clean room should be repeatedly cleaned and the equipment layer should be fully cleaned.
(4) The high-efficiency filter should be inspected in appearance when it is installed and opened, and if it is not damaged, it should be installed immediately. The installation direction should be correct, and the arrow mark on its border must be consistent with the direction of airflow.
(5) The selection of the location of the new air outlet should be chosen in a clean area with less outdoor dust content, because it directly affects the size of the dust content of the system.
1, prefabrication should pay attention to several issues
(1) clean system of thin steel plate duct bite form, it is appropriate to use the bite of the smaller single bite, corner bite and joint corner bite.
(2) plate and other more economical decontamination methods can be used detergent and water scrubbing, scrubbing must be dried immediately after scrubbing.
(3) In the process of air ducts and fittings production, must be carefully operated, so that the nibble seam to achieve continuous, tight, uniform width, no holes and dark crack phenomenon. Duct nibble seam, rivet seam, flap corners, etc. should be coated with sealant or take other sealing measures.
(4) Duct production should minimize splicing, clean duct shall not have horizontal splicing.
(5) The reinforcing frame or reinforcing bars of the air duct shall not be reinforced by convex rib method.
(6) Duct or components produced, should be closed at both ends and all openings with plastic film wrapped mouth to ensure that the transportation and installation process does not contaminate the inner wall.
2, the installation should pay attention to several issues
(1) before the installation of the duct, the duct at the construction site will be closed at both ends of the film open, and once again will be in the duct and not cleaned up the dust wipe clean.
(2) system installation is completed or suspended installation, must be closed at any time the opening of the air duct to prevent dust re-entry.
(3) clean system installation quality is good or bad with the environmental cleanliness of the construction site has a direct relationship. Especially in the cross operation with various types of work, more attention should be paid to maintain the cleanliness of the work site.
(4) flange gasket and cleaning mouth, inspection door sealing gasket material should be selected without air leakage, no ash production, good elasticity and have a certain strength of the material, the gasket should reduce the joints, the joints must be used trapezoidal or mortise and tenon joints, and coated with adhesive bonding.
(5) The flexible short pipe in the system should be made of smooth surface, non-dust-producing and airtight materials, such as rubber sheet and artificial leather.
3, duct corrosion, heat preservation should pay attention to the problem
System after the leakage of light or air leakage test for insulation, generally should be used after anti-corrosion treatment of wood, in order to ensure that the air ducts and support hangers are not in direct contact. The thickness of the wooden strip is equal to the thickness of the insulation material, so as to ensure that the bracket does not produce cold bridge. Otherwise, condensation will be formed so as to corrode the bracket.
4, the air duct through the building settlement joints should pay attention to the problem
Ducts in the building through the settlement joints should be added soft connection, generally using artificial leather or rubber sheet. Duct support, hanger is generally fixed in the building columns, beams or plates, building settlement, the bracket will be settled. The support, hanger can not be adjusted at any time, which makes the duct local torsion or shear stress, long time uneven settlement will cause damage to the duct, affecting the use of the system.
5、High-efficiency filter installation should pay attention to the problem
High-efficiency filter is the key equipment to ensure the cleanliness of the air, but also the last gate of the clean system, in the transportation and installation of various aspects should be specially protected.
(1) The high-efficiency filter requires its own good intrinsic quality, such as the metal frame filter that does not grow mold, and its finished product must be free of irritating smell.
(2) During transportation and handling, the high-efficiency filter should prevent the folded filter paper from sagging under force, and should be handled and stored in the direction of the factory mark.
(3) The inner surface of the static pressure box of the filter must be wiped clean when it is installed. In order to prevent the dust particles in the system from blowing out and then being sucked back into the system by the return air, the clean room should be repeatedly cleaned and the equipment layer should be fully cleaned.
(4) The high-efficiency filter should be inspected in appearance when it is installed and opened, and if it is not damaged, it should be installed immediately. The installation direction should be correct, and the arrow mark on its border must be consistent with the direction of airflow.
(5) The selection of the location of the new air outlet should be chosen in a clean area with less outdoor dust content, because it directly affects the size of the dust content of the system.
no data
you might like
no data
Leave a Comment
we welcome custom designs and ideas and is able to cater to the specific requirements.
Quick Links
Products
Contact Us
E-mail : machine@chinaventech.com
Address : No.3, Hongcha Road, Yinghong Industrial Zone, Yingde, Qingyuan, Guangdong, China.
Address : No.3, Hongcha Road, Yinghong Industrial Zone, Yingde, Qingyuan, Guangdong, China.
Zip Code：513042
