Copper Capillary Tube Application in Key Industries

Overview and Importance of Copper Capillary Tube

In modern industrial equipment and precision control systems, miniaturization and high precision have become the core technology development trend. In this trend, a seemingly insignificant but crucial component is playing an irreplaceable role in various systems - Copper Capillary Tube. This metal tube with a slender appearance and precise structure is becoming a key component in fluid control and thermal management systems through its process performance and application flexibility.

Definition and core features of copper capillary tube

Copper capillary tube is a copper metal tube with extremely small inner diameter and precisely controlled wall thickness. It is usually used in fluid control systems to regulate or limit flow, pressure, and temperature. Its biggest feature is its extremely small inner diameter and high-precision dimensional control requirements for length and diameter. These structural characteristics enable copper capillary tube to achieve precise fluid delivery and throttling at a microscopic scale, which is crucial in many automatic control, cooling and sensing systems.

Copper itself has thermal conductivity, ductility and corrosion resistance, and is an ideal fluid conduction material. The precision-processed copper capillary tube not only maintains the advantages of the material itself, but also further demonstrates excellent comprehensive performance in terms of airflow uniformity, pressure response speed, and flow rate control stability.

Performance improvement brought by precision processing technology

The manufacturing of copper capillary tube places extremely high demands on the process, especially the control of dimensional accuracy and inner wall finish. Modern high-end copper capillary tube can achieve its inner diameter dimensional accuracy of one thousandth of an inch through precision drawing, annealing, seamless welding and other processes, which is far superior to the processing accuracy of ordinary metal pipes.

Precision processing technology also achieves the following performance improvements:

Smoother inner wall: Reduce friction and turbulence of fluid in the pipeline, improve fluid transmission efficiency;

Strong dimensional stability: Maintain a stable flow rate and reduce flow fluctuations;

High consistency: Suitable for batch and standardized assembly needs;

Flexible and controllable: Can be processed into different forms such as straight tubes or coils to meet equipment structure requirements.

These performance advantages make copper capillary tubes suitable for scenarios with extremely high requirements for fluid control and thermal management, such as throttling devices of refrigeration equipment, input conduits of gas analysis equipment, feedback channels of high-precision temperature control systems, etc.

Market demand and application prospects of copper capillary tubes

With the development of industrial automation, smart home, green energy and other fields, the demand for micro fluid control systems is becoming more and more vigorous, and copper capillary tubes are an indispensable component of these systems.

Household and commercial refrigeration equipment: air conditioners, refrigerators, freezers and other products generally use copper capillary tubes as throttling and pressure control devices;

Intelligent temperature control system: intelligent temperature control switches and heat pump systems have extremely high requirements for response sensitivity and accuracy;

Medical equipment: The demand for copper capillary tubes in blood flow control systems, micro injection equipment, and temperature detection devices is increasing;

New energy vehicles and data centers: copper capillaries are used in their cooling systems to improve heat exchange efficiency;

Industrial automation and aerospace: used in high-precision pressure sensing and gas micro-flow delivery devices.

Application in refrigeration equipment: the core role and actual cases of copper capillary tube

In modern refrigeration systems, whether it is household refrigerators, air conditioners, or commercial freezers and large cold chain systems, copper capillary tubes are almost indispensable key components. Although it is small, it has the core functions of controlling the flow of refrigerant, regulating system pressure, and ensuring the stable operation of thermal cycles. Its reasonable selection and precise design are directly related to multiple key indicators such as the energy efficiency, response speed, and temperature fluctuation control of refrigeration equipment.

The core role of copper capillary tube in refrigerators and air conditioning systems

In a typical refrigeration cycle system, the refrigerant needs to be continuously circulated between high pressure and low pressure to achieve the process of heat absorption and heat release. The capillary tube is the throttling element connecting the condenser and the evaporator in the refrigeration system. In this process, it undertakes the following key functions:

Throttling and pressure reduction: the refrigerant enters the capillary tube from the high-pressure liquid state, and the pressure is rapidly reduced through its small inner diameter, so that it enters the evaporator to complete gasification and heat absorption;

Flow control: The precise design of the capillary tube length and inner diameter determines the amount of refrigerant passing through the unit time, ensuring that the system reaches the best working condition;

Pressure balance: When the compressor stops running, the capillary tube can also achieve pressure balance between the condenser and the evaporator to protect the system components.

Compared with complex regulating devices such as expansion valves, copper capillary tubes have simpler structures, lower costs, and higher stability. They are especially suitable for small to medium-sized refrigeration systems with relatively stable compressor operation.

The key to improving energy efficiency and temperature control accuracy

Copper capillary tubes have an important impact on the energy efficiency level of refrigeration equipment. Thanks to the excellent thermal conductivity and processing plasticity of copper materials, copper capillary tubes can achieve extremely high dimensional accuracy and inner wall finish, ensuring that the flow rate of the refrigerant is stable and turbulence is minimized when passing through. This directly brings the following advantages:

Improve heat exchange efficiency: more stable refrigerant flow, promote heat exchange efficiency between evaporator and condenser;

Reduce energy consumption: small refrigerant flow resistance, reduced compressor burden, and thus reduced power consumption;

Improve temperature control accuracy: high flow consistency, smaller evaporation temperature fluctuation, more accurate temperature control;

Lower system noise: capillary tube replaces expansion valve and other components, simplifies structure, and reduces dynamic component operation noise.

Take modern variable frequency air conditioning system as an example. Although most of them use electronic expansion valves to meet the needs of rapid adjustment, copper capillary tube still becomes an important throttling element in some auxiliary systems or steady-state operation stages due to its low cost and high stability.

Application in temperature control switch system: Advantages of copper capillary tube in temperature perception and control

With the continuous improvement of modern life's requirements for comfort, energy saving and intelligence, temperature control switch systems are widely used in home air conditioners, floor heating, electric water heaters, industrial constant temperature equipment and other fields. In these systems, copper capillary tube, as a key temperature sensing and conduction component, has become the core component in many temperature control solutions due to its excellent thermal conductivity, sensitive response speed and stable sensing ability.

Working principle of copper capillary tube in temperature control switch

In traditional mechanical temperature control switches, copper capillary tube is usually used as a temperature sensing conduit or connecting component, and together with the temperature package (temperature sensing ball) and bellows (sensing membrane) form a closed system. The basic principle is as follows:

1.Temperature sensing response: The temperature bulb is placed at the position where the temperature needs to be detected or controlled. When the ambient temperature changes, the liquid or gas in the temperature bulb expands due to heat or contracts due to cooling;

2.Pressure conduction: This volume change causes the pressure to be transmitted along the copper capillary tube to the bellows;

3.Contact drive: The bellows produces mechanical displacement with the pressure change, pushing the switch mechanism to close or open, and realizing the start or stop of the equipment;

4.Automatic recovery: When the temperature returns to the set range, the system automatically resets to maintain dynamic balance.

The copper capillary tube has two core tasks in this system:

As a pressure conduction channel, it efficiently and quickly transmits the physical changes of the temperature bulb to the sensing element; ensures the tightness and response accuracy, and avoids lag or distortion during the transmission of the temperature signal.

The precise temperature control capability of copper capillary tube

Copper capillary tube can achieve precise temperature control in temperature control switch, mainly due to the following performance advantages:

Thermal conductivity: Copper itself has extremely high thermal conductivity and can quickly sense temperature changes;

High dimensional accuracy: Modern copper capillary tube can achieve micron-level inner diameter control, improving the pressure response linearity of internal liquid or gas;

Flexible design: It can be bent and wound into various shapes, which is convenient for layout in different equipment structures;

Strong sealing: After welding or packaging, the system can be kept airtight for a long time to prevent leakage of sensing media.

These characteristics enable copper capillary tube to achieve ±1°C or even higher temperature control accuracy in temperature control system, meeting the dual needs of high-end equipment for response sensitivity and precise control. Provides solid guarantee.

Physical and chemical properties of heat-resistant steel pipe

Due to its physical and chemical properties, heat-resistant steel pipe is widely used in many high-temperature, high-pressure and highly corrosive environments. Its core properties mainly include high temperature resistance, oxidation resistance, corrosion resistance, thermal stability and good mechanical strength. These properties jointly determine the reliability and life of heat-resistant steel pipe under harsh working conditions, which is the key to its difference from ordinary steel pipes.

High temperature resistance

The most prominent feature of heat-resistant steel pipe is its ability to maintain stable structure and performance in high temperature environments. Depending on the type of material, heat-resistant steel pipe can usually work for a long time at temperatures of 550°C to 1100°C or even higher without softening or deformation.

In equipment such as steam boilers in power plants, high-temperature reaction pipelines in the petrochemical industry, and combustion chambers of aircraft engines, this high temperature resistance is indispensable and can effectively prevent equipment failures due to material deformation.

Anti-oxidation performance

Metals react easily with oxygen at high temperatures to produce an oxide layer, causing the surface to age, peel off, or even structural damage. The chromium, silicon, aluminum and other elements contained in heat-resistant steel pipe can form a dense and stable oxide film at high temperatures to play a protective role. This oxide film has the following characteristics:

High density: It can effectively prevent oxygen from further penetrating into the steel pipe;

Firm adhesion: It is not easy to peel off due to temperature changes or airflow impact;

Strong self-healing ability: Even if the oxide film is partially damaged, it can still repair itself in a high-temperature environment.

Taking austenitic stainless steel as an example, its chromium content is generally above 18%, and it can continue to maintain good oxidation resistance in an environment above 600°C. For this reason, heat-resistant steel pipe is often used in high-oxygen concentration and high-temperature environments such as combustion devices and heat treatment equipment.

Corrosion resistance

In addition to high temperature and oxygen, many industrial applications also face corrosive media such as acids, alkalis, and salts. Heat-resistant steel pipe takes this into full consideration when designing its chemical composition, adding elements such as molybdenum, titanium, and niobium, which greatly improves its ability to resist chemical corrosion.

In chemical reaction towers, high-temperature heat exchangers, petroleum cracking furnaces and other places, high temperatures are often accompanied by the flow of corrosive gases or liquids. Ordinary steel pipes are difficult to handle, while heat-resistant steel pipes can maintain a longer service life and safety.

Thermal expansion and thermal stability

The thermal expansion coefficient is a physical parameter that measures the degree of dimensional change of metal materials under temperature changes. For high-temperature equipment, the thermal stability of steel pipes is particularly critical. Heat-resistant steel pipe is designed to combine high strength with appropriate thermal expansion performance:

It can maintain dimensional stability during repeated heating and cooling;

Avoid thermal fatigue cracks and creep deformation;

Ensure that the structural connection parts are not easy to loosen or break during temperature fluctuations.

For example, in a boiler system, if the thermal expansion is uneven, it will cause problems such as pipeline dislocation and flange seal failure. Heat-resistant steel pipe precisely controls the ratio of alloy elements so that its thermal expansion coefficient is consistent with other parts of the equipment, thereby improving the operating stability of the overall system.

High temperature strength and creep performance

Creep refers to the slow plastic deformation of materials under high temperature and constant stress over time. Heat-resistant steel pipe must have anti-creep properties to withstand high temperature and high pressure loads for a long time. For example:

In an environment above 600°C, some equipment such as reheaters and superheater pipelines need to work continuously for tens of thousands of hours. If the material creep fails, the entire system will be paralyzed;

Alloy elements such as molybdenum and vanadium can significantly improve the creep rupture strength of steel pipes and extend their service life.

The high temperature yield strength and tensile strength of heat-resistant steel pipe are far superior to ordinary carbon steel or stainless steel. Even at high temperatures, it still has good load-bearing capacity, which is an important basis for its widespread adoption.

Other performance advantages

Wear resistance: Some heat-resistant steel pipes also have good wear resistance and are suitable for occasions where high-temperature solid particle media flow;

Good welding performance: Modern heat-resistant steels are mostly designed with good weldability components, which is convenient for processing and installation on the project site;

Strong structural stability: It is not easy to coarsen grains in high temperature environments, and can maintain the uniformity and stability of the microstructure.

Application in fluid control devices: copper capillary tube plays a key role in microfluidic systems and flow regulation

In modern industry, scientific research, medical and other fields, fluid control technology is becoming increasingly sophisticated and miniaturized, especially in microfluidics, laboratory automation, gas-liquid mixing and transportation systems, which puts forward higher requirements for the precise control of microfluids. In this context, copper capillary tube has become an indispensable key component in fluid control devices due to its excellent dimensional accuracy, thermal conductivity and structural stability.

The important role of copper capillary tube in microfluidic systems

Microfluidic systems refer to the technology of controlling and operating fluids in micrometer-scale channels, which are widely used in cutting-edge scientific research fields such as biomedical analysis, chemical reactions, microsampling, DNA chips, etc. In this type of system, copper capillary tube plays two important roles:

As a high-precision fluid transmission channel: copper capillary tube has a very small inner diameter, smooth inner wall, high processing precision, can maintain stable liquid flow at extremely low flow rate, and avoid turbulence and bubble generation;

As a temperature control and thermal response element**: In some thermal control or fluid temperature difference analysis systems, the high thermal conductivity of copper capillary tube enables it to respond quickly to ambient temperature changes, providing a precise adjustment basis for temperature-sensitive experiments.

Application in fluid flow regulation and pressure control

Copper capillary tube naturally has the characteristics of a "throttling element". Its ultra-small inner diameter can effectively limit the fluid flow rate and generate a stable pressure difference during the fluid passage. This feature is widely used in the following types of devices:

Flow Restrictors: In gas or liquid systems, copper capillary tubes are used to accurately set the flow rate, which is commonly used in gas equipment, oxygen production systems, medical respiratory equipment, etc.;

Flow limiting channels in pressure regulators: In some high-pressure to low-pressure systems (such as hydraulic sensing systems, chemical delivery systems), copper capillary tubes buffer and adjust pressure changes through their controllable resistance;

Temperature difference driven control system: copper capillary tubes can be used in thermal expansion liquid control loops to respond to the pressure difference generated by thermal expansion and achieve temperature and pressure linkage control.

Compared with other throttling methods (such as needle valves, ceramic nozzles, etc.), copper capillary tubes have the following advantages:

No moving parts, more stable and reliable structure;

Simple processing, lower cost;

Flexibly customized according to length and inner diameter, strong adaptability;

Passive control can be achieved without power, suitable for harsh or complex environments.

Small size, big role: the unique value of copper capillary tube

The reason why copper capillary tube is so popular in fluid control systems is not only because of its compact structure and flexible processing, but also because of its "passive precision control" characteristics, which can achieve precise flow regulation without complex electronic control systems. This feature is particularly critical in the following scenarios:

No power supply scenarios: such as field sampling, emergency medical equipment, and mobile experimental systems;

Long life and low maintenance requirements: such as underground hydraulic systems and remote sensing systems;

High reliability requirements: such as spacecraft micro-propulsion systems, biochip fluid channels, low-temperature physical experimental systems, etc.

In addition, with the development of miniaturization of medical equipment, laboratory automation, and intelligent industrial fluid control, higher requirements are placed on the accuracy, stability, and response speed of microfluidics. Copper capillary tube is becoming the "micro core" in this technological change with its excellent characteristics.

Application in efficient refrigeration system and cooling equipment: copper capillary tube plays a key role in heat exchange and cooling control

As new energy vehicles, data centers, high-performance computing equipment, etc. put forward higher requirements for efficient cooling technology, traditional heat dissipation and refrigeration systems are undergoing profound changes. In the technical background of improving energy efficiency, reducing energy consumption and precisely controlling temperature, copper capillary tube has gradually become an indispensable microchannel component in various cooling equipment due to its thermal conductivity, size controllability and stable flow regulation ability. Especially in terms of heat exchange efficiency and cooling stability, copper capillary tube is playing an increasingly critical role.

Technical advantages of copper capillary tube in efficient cooling system

The core role of copper capillary tube in cooling system is mainly reflected in the following aspects:

Accurate control of refrigerant flow rate: In the compressor refrigeration system, the capillary tube is used to limit the refrigerant flow rate so that it can complete the gasification and heat absorption process after throttling and decompression. The copper capillary tube controls the flow rate through a very small inner diameter and a certain length to achieve the key pressure difference and fluid state switching in the refrigeration cycle.

Improve heat exchange efficiency: Copper's high thermal conductivity makes it an ideal heat transfer material. In the condenser or evaporator, the slender copper capillary tube can quickly conduct the temperature difference between the refrigerant and the heat source, thereby improving the overall system efficiency.

Compact structure and flexible layout: Straight or coiled copper capillary tubes are easy to flexibly arrange inside space-constrained equipment, providing a basis for equipment miniaturization and system integration.

High operating stability and low maintenance cost: Without complex electronic control devices, copper capillary tubes can maintain stable flow during long-term system operation, are not easy to clog or leak, and are reliable "passive flow control elements".

Application in electric vehicle battery cooling system

Electric vehicle batteries generate a lot of heat during charging and discharging. If they are not cooled in time, they will seriously affect the battery life and safety. Traditional air cooling systems are difficult to cope with the instantaneous high temperature generated by high-power charging, and liquid cooling systems are becoming the mainstream cooling method.

In the liquid-cooled battery management system (Battery Thermal Management System, BTMS), copper capillary tube has the following application value:

Regulate the flow rate of refrigerant and ensure fluid uniformity: Through the copper capillary tube of specific length and diameter, the coolant flow rate inside the battery pack is more stable and the local temperature rise is reduced.

Achieve modular pipe layout: copper capillary tube can be coiled into a coil, combined with the arrangement of battery modules, which not only has high heat dissipation efficiency, but also takes into account the compact structure and light weight.

Strong pressure resistance and vibration resistance: suitable for electric vehicles to operate under various working conditions, with long-term and high-frequency thermal cycles.

Application in data center cooling system

With the surge in high-performance computing needs such as cloud computing, AI, and big data, data centers are facing greater heat dissipation challenges. Traditional air cooling is gradually unable to meet the temperature control requirements of rack systems with increasing density, and liquid cooling technology (such as cold plate cooling and immersion cooling) is becoming increasingly popular.

In this type of system, copper capillary tube can be applied to the following modules:

Microchannel cooling plate: copper capillary tube is the microchannel part inside the cold plate. By controlling the flow rate and pressure of the refrigerant in the microtube, the local heat exchange efficiency of the cold plate is improved.

Coolant pre-cooling and circuit throttling control: used to connect the cooling modules between racks, control the refrigerant flow rate of different server nodes, and maintain the overall temperature difference balance.

Evaporative cooling auxiliary structure: In some high-end systems, copper capillary tube is used in the auxiliary evaporative cooling loop to achieve passive temperature control.

Application scenarios in other high-efficiency refrigeration equipment

In addition to the above fields, copper capillary tubes are also widely used in the following high-efficiency cooling systems:

LED lighting and laser cooling systems: Active cooling pipes for high-density packaging to prevent thermal attenuation of light sources;

Medical imaging equipment cooling systems: Control the stable flow of refrigerant to ensure image stability;

Semiconductor manufacturing equipment cooling loops: Maintain an ultra-high-precision thermal control environment;

Aerospace and military guidance systems: In a vacuum environment, coolant is transferred through copper capillary tubes to achieve power-free heat dissipation.

Application in medical equipment: The key role of copper capillary tube in precision fluid control

With the continuous advancement of medical technology, equipment is developing towards higher precision, smaller size and more reliable performance. In this process, fluid control has become a key link in improving the performance of many medical devices. Copper capillary tube plays an irreplaceable role in medical equipment, especially in temperature monitoring and blood circulation systems, due to its dimensional accuracy, stable flow regulation ability and good biocompatibility.

Advantages of copper capillary tube in fluid control of medical equipment

Medical equipment has extremely high requirements for fluid control, which not only requires accurate and stable fluid delivery, but also ensures material safety and fast equipment response. The advantages of copper capillary tube include:

High-precision inner diameter control: The inner diameter can usually be controlled at the micron level, which can achieve fine adjustment of extremely small amounts of liquid;

Good thermal conductivity: It helps to quickly transfer heat and ensure high responsiveness of temperature sensing and control;

Stable mechanical properties: Strong corrosion resistance, long-term stable operation, and reduced maintenance and pollution risks;

Small size and good flexibility: It is easy to integrate in miniaturized medical equipment to meet the design requirements of space constraints.

These advantages make copper capillary tube an ideal material for fluid transmission, temperature regulation and monitoring in the medical field.

Application in temperature monitoring equipment

In medical environments, accurate temperature monitoring is the key to ensuring patient safety and normal operation of equipment. Copper capillary tube is often used in body temperature monitoring instruments, operating room temperature control systems and ward environment monitoring equipment.

Specific performance:

Temperature sensor connection: copper capillary tube quickly transmits environmental or internal temperature changes to measuring instruments by connecting temperature sensing elements (such as temperature bags) to achieve rapid response;

Fluid temperature control loop: In some liquid temperature control systems, copper capillary tube is used as a conduction path for temperature-sensitive media, triggering switches through liquid thermal expansion and contraction to ensure system temperature stability;

Cold chain monitoring: used in cold chain equipment for the transportation of medical supplies such as medicines and vaccines to ensure accurate temperature control during transportation.

Copper capillary tube, with its high thermal conductivity and mechanical stability, ensures the accuracy of temperature monitoring data and the reliability of equipment operation.

Fluid Control in the Blood Circulatory System

The blood circulation system is the core part of vital sign monitoring and treatment equipment, such as hemodialysis machines, cardiac assist devices, micro-injection pumps, etc., all of which require extremely fine control of fluids (blood or liquid medicine). The copper capillary tube mainly undertakes the following functions in these devices:

Precise micro-flow delivery: The flow rate of blood and injection fluids requires extremely precise, and any fluctuation may affect the treatment effect. The copper capillary tube can achieve fine adjustment of the liquid flow rate with its micron-level inner diameter and precise length, ensuring that the treatment fluid is delivered at a constant rate.

Reduce mechanical stimulation and damage: Because the copper surface is smooth and the heat conduction is uniform, the shear force generated when the fluid flows in the tube is small, which helps to reduce mechanical damage to blood cells and improve treatment safety.

Temperature control and monitoring: Temperature control when blood flows through the equipment is very important. The high thermal conductivity of the copper capillary tube makes it an important part of the blood temperature regulation loop, ensuring that the blood temperature is maintained in an appropriate range.

Application of air flow restrictors: The key role of copper capillary tube in air flow control systems

In various gas and fluid systems, accurate air flow control is essential to ensure equipment operating efficiency, extend service life, and improve system safety. As an important component for controlling gas flow rate and flow, flow restrictors are widely used in refrigeration, air conditioning, laboratory equipment and other fields. Copper capillary tubes have become an indispensable component in many air flow restrictor designs due to their excellent flow regulation ability and mechanical stability. Accurate air flow regulation through copper capillary tubes can not only prevent system overpressure, but also improve overall operating accuracy and stability.

The role of copper capillary tube as an air flow restrictor

As an air flow restrictor, the role of copper capillary tube in gas control systems is mainly reflected in the following aspects:

Accurate control of air flow rate: The inner diameter of copper capillary tube can be precisely controlled according to design requirements, which enables it to generate appropriate flow resistance when gas flows through. By finely adjusting the tube diameter, copper capillary tube can achieve accurate control of gas flow rate to avoid excessive or too small flow affecting equipment performance. Especially in low-flow gas applications, copper capillary tube provides a stable flow state.

Prevent system overpressure: When the gas encounters the copper capillary tube during the flow process, the flow rate of the airflow will be naturally limited, which to a certain extent prevents excessive airflow from entering the system. The copper capillary tube can reduce instantaneous pressure fluctuations in high-pressure systems through the reasonable design of its inner diameter and length, play a role in pressure reduction and pressure balance, and prevent the system from malfunctioning or being damaged due to overpressure.

Uniformity of gas flow: The copper capillary tube makes the airflow more uniform through precise inner diameter and flow adjustment, avoids local airflow instability or eddy currents, and ensures a smooth flow of gas in the system. This is crucial for equipment that requires stable airflow, such as air conditioning systems, gas equipment, etc.

Reliability of materials and structures: Copper has excellent corrosion resistance, oxidation resistance and good thermal conductivity, can adapt to a variety of gas fluid environments, and has a long maintenance cycle.

The copper capillary tube has a simple structure, no moving parts, and extremely high stability. It is suitable for systems that run for a long time and have strict requirements for airflow control.

Application of copper capillary tube in laboratory airflow control equipment

In many laboratory airflow control equipment, copper capillary tube plays an irreplaceable role, especially in controlling gas flow rate, maintaining experimental stability and preventing gas leakage.

Laboratory gas flow control system:In laboratory environments such as chemical experiments and gas analysis, copper capillary tube is widely used in gas flow control equipment. Gas flow control in laboratory equipment requires precise adjustment to ensure the stability of experimental conditions and avoid excessive or low gas concentrations that affect experimental results.

Flow control in gas analyzers:Gas analyzers are often used in environmental monitoring and pollution source detection. These instruments have extremely high requirements for gas flow. As a flow limiter, copper capillary tube can ensure that the flow rate of gas entering the analyzer is constant and avoid analytical errors caused by flow fluctuations.

Airflow management of copper capillary tube in air conditioning system

In air conditioning system, airflow management is very important, especially in the control and regulation of refrigerant flow. Copper capillary tube is not only used for throttling device of refrigerant, but also ensures the stability of air conditioning system under different loads, improves energy efficiency and prolongs equipment life.

Precise control of refrigerant flow:In air conditioning system, copper capillary tube is often used in throttling device to adjust the refrigerant flow through condenser and evaporator. Copper capillary tube ensures the stable operation of air conditioning system under different working conditions by limiting the refrigerant flow, avoiding compressor overload or poor cooling effect due to excessive or too small flow.

Preventing system overpressure and energy saving effect:Copper capillary tube also has the function of controlling overpressure, avoiding pressure fluctuation caused by excessive refrigerant flow, and ensuring the long-term stable operation of air conditioning system. In addition, copper capillary tube can help air conditioning system reduce energy consumption and improve the overall energy efficiency ratio of the system 

Application in automobile and aerospace: The key role of copper capillary tube in fluid and temperature control system

With the rapid development of automobile industry and aerospace technology, the efficiency, reliability and safety of power system have become the core concerns. In these high-end fields, copper capillary tube has become an indispensable key component in fluid transmission and temperature control system due to its extremely high manufacturing precision, stable mechanical properties and excellent heat conduction characteristics, helping to achieve precise flow control and temperature regulation, and promoting the improvement of overall system performance.

The role of copper capillary tube in automobile cooling system

The normal operation of automobile engine and related components depends on efficient and stable cooling system. The cooling system maintains the engine temperature within a safe range by controlling the flow of coolant and gas. As a fine flow control element in the cooling system, copper capillary tube plays an important role:

Accurately adjust the coolant flow: In the cooling system of automobile engine, the precise control of coolant flow directly affects the heat exchange efficiency. The copper capillary tube realizes the precise restriction of coolant flow rate through the micro-tube design, so that the coolant can be evenly distributed to various parts of the engine, preventing local overheating or uneven cooling, and improving the overall cooling effect of the engine.

Improve the response speed of the cooling system: The excellent thermal conductivity of copper enables the coolant to quickly adjust the temperature when it flows through the copper capillary tube, helping the cooling system to quickly respond to changes in engine load and achieve dynamic temperature control. This has a positive significance for improving engine performance and fuel economy.

Improve system durability and reliability: copper capillary tube has good corrosion resistance and mechanical strength, can adapt to the complex working environment of the car, ensure long-term stable operation, and reduce maintenance costs.

Special applications in the aerospace field

The aerospace field has extremely high requirements for fluid control and temperature management. Copper capillary tube plays an important role in many key applications with its high precision and excellent physical properties:

Application in gas cooling system: The gas cooling system in aircraft engines and spacecraft requires precise control of gas flow to ensure that the temperature of engine components and electronic equipment is within a safe range. Copper capillary tube is used as a gas flow limiter to ensure stable gas flow rate and prevent gas overflow from causing equipment overheating or damage.

Engine temperature control: Aircraft engines generate high temperatures when running. Copper capillary tubes are used in oil and fuel lines to adjust fluid flow, assist the temperature control system to maintain the engine operating temperature, and ensure the efficiency and safety of the engine.

Spacecraft life support system: In the life support system of spacecraft, copper capillary tubes are used to finely adjust the flow of gas and liquid, ensure the stable operation of the oxygen supply system and cooling system, and support the life safety of astronauts.

Fluid control in high-performance vehicles and aircraft engines

High-performance vehicles and aircraft engines have extremely high requirements for the accuracy and stability of fluid control. Copper capillary tubes have become the preferred components of key systems of such engines due to their high manufacturing precision and inner diameter tolerance that can be controlled within one thousandth of an inch.

Application in high-performance vehicles: High-performance automobile engines usually use advanced technologies such as turbocharging and multi-point injection, requiring the cooling and fuel systems to have highly accurate flow control. Copper capillary tubes achieve stable delivery of coolant and fuel through their precise throttling ability, avoid engine overheating and uneven fuel supply, and improve vehicle power performance and fuel efficiency.

Precision flow control of aircraft engines: The internal environment of aircraft engines is extremely harsh, and the fluid control system must have extremely high reliability and precision. Copper capillary tubes are widely used in fuel systems, lubricating oil systems, and cooling systems to ensure that each system can still operate stably under high temperature and high pressure conditions, thereby improving engine safety and life.