2024年1月31日星期三

induction heating thermal conductive oil system

Induction Heating Thermal Conductive Oil-Induction Fluid Heater

Conventional heating methods, like boilers and hot press machines that burn coal, fuel or other material, usually come with drawbacks such as low heating efficiency, high cost, complex maintenance procedures, pollution, and hazardous work environment.

Induction thermal conductive oil heater-Inductive Fluid Heaters

How it works and advantages in its application: Advantages of using the Induction Fluid Heater Precise control of the working temperature, low maintenance cost and the possibility to heat any type of fluid to any temperature and pressure are some of the advantages presented by the Inductive Electrothermal Induction Heating Generator (or Inductive Heater for fluids) manufactured by HLQ. Using the principle of magnetic induction heating, in the Induction Heater for fluids heat is generated in the walls of a spiral of stainless steel tubes. The fluid that circulates through these tubes removes that heat, which is used in the process. These advantages, combined with a specific design for each customer and the unique durability properties of stainless steel, make the Inductive Heater for fluids practically maintenance-free, with no need to change any heating element during its useful life. . The Inductive Heater for fluids allowed heating projects that were not viable by other electrical means or not, and hundreds of them are already in use. The Inductive Heater for fluids, in spite of using electrical energy to generate heat, in many applications presented itself as a more advantageous option than operating heating systems with fuel oil or natural gas, mainly due to the inefficiency inherent in the generation systems combustion heat and the need for constant maintenance. Advantages In summary, the Inductive Electrothermal Induction Heater has the following advantages: • System works dry and is naturally cooled. • Precise control of the working temperature. • Almost immediate availability of heat when energizing the Inductive Heater, due to its very low thermal inertia, eliminating the long heating periods necessary for other heating systems to reach the regime temperature. • High efficiency with consequent energy savings. • High power factor (0.96 to 0.99). • Operation with high temperatures and pressures. • Elimination of heat exchangers. • Total operational security due to the physical separation between the heater and the electrical network. • Maintenance cost practically non-existent. • Modular installation. • Quick responses to temperature variations (low thermal inertia). • Wall temperature differential - extremely low fluid, avoiding any kind of cracking or degradation of the fluid. • Accuracy and temperature uniformity throughout the fluid and quality of the process for maintaining a constant temperature. • Elimination of all maintenance costs, installations and relative contracts when compared to steam boilers. • Total security for the operator and the entire process. • Gain space due to the compact construction of the Inductive Heater. • Direct heating of the fluid without the use of a heat exchanger. • Due to the working system, the heater is anti-pollutant. • Exempt from generating residues in direct heating of the thermal fluid, due to minimal oxidation. • In operation the inductive heater is completely noise free. • Ease and low cost of installation. https://dw-inductionheater.com/induction-heating-thermal-conductive-oil-system.html?feed_id=233266&_unique_id=65bac568bcb80

induction fluid pipe heater

Induction Thermal Fluid Pipeline Heater

Conventional heating methods, like boilers and hot press machines that burn coal, fuel or other material, usually come with drawbacks such as low heating efficiency, high cost, complex maintenance procedures, pollution, and hazardous work environment. Induction heating effectively addressed those problems. It has the following advantages: -High heat efficiency; Save more energy; -Fast temperature ramp-up; -Digital software control gives accurate control over the temperature and the whole heating process; -Highly reliable; -Easy installation and maintenance; -Lower operation and maintenance cost. HLQ Induction Heating Equipment is designed for Pipeline, Vessel, Heat Exchanger, Chemical Reactor and Boiler. The vessels transfers heat to the fluid materials like Industrial Water, Oil, Gas, Food Material and Chemical Raw Materials heating. Heating Power size 2.5KW-100KW is the air cooled ones. Power size 120KW-600KW is the water cooled ones. For some on site chemical material reactor heating, We will supply the heating system with Explosion Proof Configuration and Remote Control System. This HLQ heating system consists induction heater, induction coil, temperature control system, thermal couple and insulation materials. Our company provides installation and commissioning scheme. The user can install and debug by yourself. We can also provide on-site installation and commissioning. The key of power selection of fluid heating equipment is the calculation of heat and heat exchange area. HLQ Induction Heating Equipment 2.5KW-100KW air cooled and 120KW-600KW water cooled.

Energy Efficiency Comparison
Heating method Conditions Power consumption
Induction heating Heating 10 liters of water up to 50ºC 0.583kWh
Resistance heating Heating 10 liters of water up to 50ºC 0.833kWh

Comparison between Induction Heating and Coal/Gas/Resistance Heating
Items Induction heating Coal-fired heating Gas-fired heating Resistance heating
Heating efficiency 98% 30-65% 80% Below 80%
Pollutant emissions No noise, no dust, no exhaust gas, no waste residue Coal cinders, smoke, carbon dioxide, sulfur dioxide Carbon dioxide, sulfur dioxide Non
Fouling (pipe wall) Non-fouling Fouling Fouling Fouling
Water softener Depending on the quality of fluid Required Required Required
Heating stability Constant Power is decreased by 8% yearly Power is decreased by 8% yearly Power is decreased by more than 20% yearly (high power consumption)
Safety Electricity and water separation, no electricity leakage, no radiation Risk of carbon monoxide poisoning Risk of carbon monoxide poisoning and exposure Risk of electricity leakage, electric shock or fire
Durability With core design of heating, 30 years service life 5 years 5 to 8 years Half to one year

Diagram

Induction Heating Power Calculation

Required parameters of parts to be heated: specific heat capacity, weight, starting temperature and end temperature, heating time; Calculation formula: specific heat capacity J/(kg*ºC)×temperature differenceºC×weight KG ÷ time S = power W For example, to heat thermal oil of 1 ton from 20ºC to 200ºC within an hour, the power calculation is as follows: Specific heat capacity: 2100J/(kg*ºC) Temperature difference: 200ºC-20ºC=180ºC Weight: 1ton=1000kg Time: 1 hour=3600 seconds i.e. 2100 J/ (kg*ºC)×(200ºC -20 ºC)×1000kg ÷3600s=105000W=105kW Conclusion The theoretical power is 105kW, but the actual power is commonly increased by 20% because of taking the heat loss into consideration, that is, the actual power is 120kW. Two sets of 60kW induction heating system as a combination are required.  

Induction Thermal Fluid Pipeline Heater

Advantages of using the Induction Fluid Pipeline Heater: Precise control of the working temperature, low maintenance cost and the possibility to heat any type of fluid to any temperature and pressure are some of the advantages presented by the Inductive Electrothermal Induction Heating Generator (or Inductive Heater for fluids) manufactured by HLQ. Using the principle of magnetic induction heating, in the Inductive Heater for fluids heat is generated in the walls of a spiral of stainless steel tubes. The fluid that circulates through these tubes removes that heat, which is used in the process. These advantages, combined with a specific design for each customer and the unique durability properties of stainless steel, make the Inductive Heater for fluids practically maintenance-free, with no need to change any heating element during its useful life. . The Inductive Heater for fluids allowed heating projects that were not viable by other electrical means or not, and hundreds of them are already in use. The Induction Pipeline Heater for fluids, in spite of using electrical energy to generate heat, in many applications presented itself as a more advantageous option than operating heating systems with fuel oil or natural gas, mainly due to the inefficiency inherent in the generation systems combustion heat and the need for constant maintenance. Advantages: In summary, the Inductive Electrothermal Heater has the following advantages:
  • System works dry and is naturally cooled.
  • Precise control of the working temperature.
  • Almost immediate availability of heat when energizing the Inductive Heater, due to its very low thermal inertia, eliminating the long heating periods necessary for other heating systems to reach the regime temperature.
  • High efficiency with consequent energy savings.
  • High power factor (0.96 to 0.99).
  • Operation with high temperatures and pressures.
  • Elimination of heat exchangers.
  • Total operational security due to the physical separation between the heater and the electrical network.
  • Maintenance cost practically non-existent.
  • Modular installation.
  • Quick responses to temperature variations (low thermal inertia).
  • Wall temperature differential - extremely low fluid, avoiding any kind of cracking or degradation of the fluid.
  • Accuracy and temperature uniformity throughout the fluid and quality of the process for maintaining a constant temperature.
  • Elimination of all maintenance costs, installations and relative contracts when compared to steam boilers.
  • Total security for the operator and the entire process.
  • Gain space due to the compact construction of the Inductive Heater.
  • Direct heating of the fluid without the use of a heat exchanger.
  • Due to the working system, the heater is anti-pollutant.
  • Exempt from generating residues in direct heating of the thermal fluid, due to minimal oxidation.
  • In operation the inductive heater is completely noise free.
  • Ease and low cost of installation.
https://dw-inductionheater.com/induction-fluid-pipe-heater.html?feed_id=233236&_unique_id=65ba0eb8004fd

2024年1月30日星期二

Aluminum Tubes Induction Brazing

In order to increase the efficiency and to reduce the thermal effect of metal heating, the induction brazing technology is proposed. Advantage of this technology consists mainly in exact location of heating supplied to the brazed joints. Based on the results of numerical simulation it was then possible to design the parameters necessary to achieve brazing temperatures in the desired time. The aim was to minimize this time to avoid an undesired thermal effect on the metals during metallurgical joining.The results of numerical simulation revealed that increasing the current frequency resulted in concentration of maximum temperatures in surface areas of joined metals. With increasing current, the reduction of time required for reaching the brazing temperature was observed.

The advantages of induction brazing of aluminum vs. torch or flame brazing

The low melting temperature of aluminum base metals coupled with the narrow temperature process window of the braze alloys used is a challenge when torch brazing.  The lack of color change while heating aluminum does not provide braze operators any visual indication that the aluminum has reached the proper brazing temperature.  Braze operators introduce a number of variables when torch brazing.  Among these include torch settings and flame type; distance from torch to parts being brazed; location of flame relative to parts being joined; and more. Reasons to consider using induction heating when brazing aluminum include:
  • Quick, rapid heating
  • Controlled, precise heat control
  • Selective (localized) heat
  • Production line adaptability and integration
  • Improved fixture life and simplicity
  • Repeatable, reliable brazed joints
  • Improved safety
Successful induction brazing of aluminum components is highly dependent on designing induction heating coils to focus the electromagnetic heat energy into the areas to be brazed and to heat them uniformly so that the braze alloy melts and flows properly.  Improperly designed induction coils can result in some areas being overheated and other areas not receiving enough heat energy resulting in an incomplete braze joint. For a typical brazed aluminum tube joint, an operator installs an aluminum braze ring, often containing flux, on the aluminum tube and inserts this into another expanded tube or a block fitting.  The parts are then placed into an induction coil and heated.  In a normal process, the braze filler metals melt and flow into the joint interface due to capillary action.

Why induction braze vs. torch braze aluminum components?

First, a little background on common aluminum alloys prevalent today and the common aluminum braze and solders used for joining.  Brazing aluminum components is much more challenging than brazing copper components.  Copper melts at 1980°F (1083°C) and it changes color as it is heated.  Aluminum alloys often used in HVAC systems start to melt at approximately 1190°F (643°C) and do not provide any visual cues, such as color changes, as it heats. Very precise temperature control is required as the difference in the melting and brazing temperatures for aluminum, dependent upon the aluminum base metal, braze filler metal, and mass of the components to be brazed.  For example, The temperature difference between solidus temperature of two common aluminum alloys, 3003 series aluminum, and 6061 series aluminum, and the liquid’s temperature of frequently used BAlSi-4 braze alloy is 20°F – a very narrow temperature process window, thus necessitating precise control. The selection of base alloys is extremely important with aluminum systems that are being brazed. The best practice is to braze at a temperature that is below the solidus temperature of the alloys the make up the components being brazed together.
AWS A5.8 Classification Nominal Chemical Composition Solidus °F (°C) Liquidus °F(°C) Brazing Temperature
BAISi-3 86% Al 10%Si 4%Cu 970 (521) 1085 (855) 1085~1120 °F
BAISI-4 88% aL 12%Si 1070 (577) 1080 (582) 1080~1120 °F
78 Zn 22%Al 826 (441) 905(471) 905~950 °F
98% Zn 2%Al 715(379) 725(385) 725~765 °F
It should be noted that galvanic corrosion can occur between zinc-rich areas and aluminum.  As noted in the galvanic chart in Figure 1, zinc is less noble and tends to be anodic compared to aluminum.  The lower the potential difference, the lower the rate of corrosion.  The potential difference between zinc and aluminum is minimal compared to the potential between aluminum and copper. Another phenomenon when aluminum is brazed with a zinc alloy is pitting. Local cell or pitting corrosion can occur on any metal. Aluminum is normally protected by a hard, thin film that forms at the surface when they are exposed to oxygen (aluminum oxide) but when a flux removes this protective oxide layer, dissolution of the aluminum can occur.  The longer the filler metal remains molten, the more severe the dissolution is. Aluminum forms a tough oxide layer during brazing, so the use of flux is essential. Fluxing aluminum components can be done separately prior to brazing or an aluminum brazing alloy containing flux can be incorporated into the brazing process. Depending upon the type of flux used (corrosive vs. non-corrosive), an additional step may be required if the flux residue must be removed after brazing.  Consult with a braze and flux manufacturer to get recommendations on brazing alloy and flux based on the materials being joined and the expected brazing temperatures.   Aluminum Tubes Induction Brazing https://dw-inductionheater.com/aluminum-tubes-induction-brazing.html?feed_id=233206&_unique_id=65b957c5e8ec5

2024年1月29日星期一

Induction Heat Staking for Spring Wire and Nylon Powder

Induction Heat Staking for Spring Wire and Nylon Powder

Heat staking involves using induction heating in processes where plastics change state from solid to liquid. One common use for this application is press fitting a metal part into a plastic part. The metal is heated using induction to a temperature greater than that of the plastic reflow. In some cases the metal may be pressed into the plastic before heating occurs; or the metal may be heated before being pressed into the plastic, causing the plastic to reflow as the part is pressed in (also known as plastic reflowing). Induction heating can also be used in plastic injection molding machines. Induction heating improves energy efficiency for injection and extrusion processes. Heat is directly generated in the barrel of the machine, reducing warm-up time and energy consumption. Metal-to-plastic insertion involves heating a threaded metal insert to a temperature above the plastic reflow point and pressing it into the plastic part. The process requires fast, precise, repeatable heating. Softening of the internal threads is the result of long heating processes. Induction heating provides precise heat control to ensure a consistent result, with high-quality results. Equipment can be programmed for a specific power level and heating time, removing operator variability, and improving repeatability of the process. Objective: To heat the ends of 0.072" spring wire, spaced 1/2" apart, uniformly for the application of nylon powder on a 1" length of the end. Once heated to 7000F, the nylon powder fuses to the wire creating a protective coating. Underwires have a past history of poking through the supportive garment and scratching the wearer. By adding a protective nylon coating at the ends of the wire form, this uncomfortable situation is avoided. Material: Spring Wire and Nylon Powder Temperature: 370 Application: The DW-UHF-6KW-III output solid state induction heating power supply along with a unique five (5) turn elongated helical coil was used to achieve the followingresults: -- 370  was reached with a twelve (12) second machine cycle. -- A uniform coating was produced as a result of even heating due to the unique five (5) turn elongated helical coil. -- Twelve (12) wire samples were heated simultaneously in the unique work coil. Equipment: DW-UHF-6KW-III output solid state induction power supply including one (1) remote heat station containing two (2) capacitors with a total value of 0.66 µF, and a unique five (5) turn elongated helical coil measuring 2 1/2" wide, 8 1/2" long, and 2 3/4" tall with the lower two turns angled down at the ends. Frequency: 258 kHz induction heat staking for Spring Wire and Nylon Powder https://dw-inductionheater.com/induction-heat-staking-for-spring-wire-and-nylon-powder.html?feed_id=233176&_unique_id=65b8a117ccc96

Application of Induction Heating In Food

Application of Induction Heating In Food Processing

Induction heating is an electromagnetic heating technology that has several advantages such as high safety, scalability, and high energy efficiency. It has been applied for a long time in metal processing, medical applications, and cooking. However, the application of this technology in food processing industry is still in its early stages. The objectives of this article were to review the basics of induction heating technology and the factors affecting its performance and to assess the application status of this technology in food processing. The research needs and future perspectives of this technology in food processing are also presented. Although several patents on using the induction heating to process food materials are available, there is still a need to generate more scientific data on the design, performance, and energy efficiency of the induction heating technology to be applied in different unit operations, such as drying, pasteurization, sterilization, and roasting, in food processing. It is needed to optimize different design and operational parameters, such as applied current frequency, type of equipment material, equipment size and configuration, and coil configurations. The information on the effect of the induction heating on sensory and nutritional quality of different food materials is lack. Research is also needed to compare the efficiency of the induction heating and other heating technologies, such as infrared, microwave, and ohmic heating, for food processing applications. Application of Induction Heating in Food Processing and Cooking https://dw-inductionheater.com/application-of-induction-heating-in-food.html?feed_id=233146&_unique_id=65b8484f451cc

Application of Induction Heating In Food

Application of Induction Heating In Food Processing

Induction heating is an electromagnetic heating technology that has several advantages such as high safety, scalability, and high energy efficiency. It has been applied for a long time in metal processing, medical applications, and cooking. However, the application of this technology in food processing industry is still in its early stages. The objectives of this article were to review the basics of induction heating technology and the factors affecting its performance and to assess the application status of this technology in food processing. The research needs and future perspectives of this technology in food processing are also presented. Although several patents on using the induction heating to process food materials are available, there is still a need to generate more scientific data on the design, performance, and energy efficiency of the induction heating technology to be applied in different unit operations, such as drying, pasteurization, sterilization, and roasting, in food processing. It is needed to optimize different design and operational parameters, such as applied current frequency, type of equipment material, equipment size and configuration, and coil configurations. The information on the effect of the induction heating on sensory and nutritional quality of different food materials is lack. Research is also needed to compare the efficiency of the induction heating and other heating technologies, such as infrared, microwave, and ohmic heating, for food processing applications. Application of Induction Heating in Food Processing and Cooking https://dw-inductionheater.com/application-of-induction-heating-in-food.html?feed_id=233146&_unique_id=65b8484eb6469

2024年1月28日星期日

Handheld Induction Brazing HVAC Pipes of Heat Exchangers

Fast Handheld Induction Brazing HVAC Pipes System of Heat Exchangers

Induction brazing is the process of joining two or more metals using induction heating. Induction heating utilizes the electromagnetic field to provide heat without contact or flame. Induction brazing is more localized, repeatable, and easier to automate compared to traditional torch brazing. The principle of induction brazing is similar to the transformer principle, where the inductor is the primary winding and the part to be heated acts as a single turn secondary winding. Using induction brazing rather than a conventional torch can increase the quality of joints and shorten the time necessary for each braze; however, the ease of creating a reproducible process makes induction brazing ideal for serial, high volume production processes such as induction brazing of heat exchangers. Brazing the bent copper tubing on heat exchangers can be tedious and time consuming because joint quality is critical and there are so many joints. Induction power could be your best solution to maintain quality without sacrificing production speed. Precisely controlled, powerful generators from HLQ provide heat exactly where you need it without causing distortion, ensuring that your production process is accurate and fast. Whether your heat exchangers are large, medium or small, in the plant or in the field, HLQ makes an induction brazing generator to meet your specific needs. Brazing can be done manually or with the aid of automation. https://dw-inductionheater.com/handheld-induction-brazing-hvac-pipes-of-heat-exchangers.html?feed_id=233116&_unique_id=65b73364e8cfd

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HLQ induction heating machine manufacturer provides the service of induction brazing,melting,hot forming,hardening surface,annealing,shrink fitting,PWHT,etc.