Spiral tube wound heat exchanger
Spiral tube heat exchangers are a type of high-efficiency heat exchange equipment and belong to a special structural form of shell-and-tube heat exchangers.Its core structure consists of multiple spirally wound heat exchange tubes, which are wound in a certain pattern on a central cylinder or support to form a spiral tube bundle. The entire tube bundle is placed inside a cylindrical shell.The hot and cold fluids flow in the heat exchange tubes and shell side respectively, and the heat is exchanged and transferred through heat conduction through the tube walls. It is a key device for heat recovery and temperature regulation in industrial production.
Product Features
Highly efficient heat exchange performance The spiral structure of the tube creates strong turbulent flow in both the shell and tube sides, significantly reducing the boundary layer thickness between the fluid and the tube wall and improving the heat transfer coefficient.Compared with traditional straight-tube heat exchangers, its heat transfer efficiency can be improved by 30%-50%, enabling efficient heat exchange in a smaller space.
Compact structural design Spiral tube heat exchangers employ a spiral winding layout, resulting in a higher heat exchange area.The equipment is only 1/3 to 1/2 the size of a conventional shell-and-tube heat exchanger, and occupies a small area, making it ideal for industrial settings with limited installation space.At the same time, the equipment is lighter, making it easier to transport and install.
Excellent anti-fouling ability;.The centrifugal force generated by the turbulent flow of fluid within the spiral channel effectively prevents impurities from depositing and scaling on the pipe wall surface.This reduces the impact of fouling thermal resistance on heat exchange efficiency.Even when handling fluids containing small amounts of impurities or with high viscosity, it maintains stable heat exchange performance, reducing the frequency of equipment cleaning and maintenance costs.
Good temperature and pressure resistance The heat exchange tubes are made of high-quality metal materials (such as stainless steel, titanium alloy, nickel-based alloy, etc.).The housing can also be made of carbon steel, stainless steel, or other materials depending on the operating conditions, and can withstand a temperature range of -200℃ to 600℃ and a pressure of up to 40MPa.It can meet various demanding industrial heat exchange conditions.
Low fluid resistance loss The spiral flow channel design makes fluid flow smoother and avoids the generation of local eddies and dead zones.The fluid resistance loss within the equipment is much lower than that of ordinary plate heat exchangers, which reduces the power consumption for fluid transport and saves operating costs..
Product Functions
Heat exchange and recovery
This is the core function of a spiral tube heat exchanger: it enables heat transfer between hot and cold fluids.By transferring heat from high-temperature fluids to low-temperature fluids, industrial waste heat can be recovered and utilized, thereby improving energy efficiency.For example, recovering waste heat from chemical reactions and recovering waste heat from smelting flue gas in the metallurgical industry.
Temperature regulation and control
It can precisely regulate the temperature of the fluid to meet the temperature requirements of the production process.For example, adjusting the temperature of the refrigerant in a refrigeration system, or controlling the temperature of reactants in pharmaceutical production, can ensure the stability of the production process and the quality of the product.
Condensation and vaporization
It enables the condensation of steam and the vaporization of liquids. In the petrochemical industry, it is used for the condensation and recovery of hydrocarbon vapors.In power engineering, it is used for the vaporization preheating of boiler feedwater to improve the boiler's thermal efficiency.
Heating and cooling
It can heat both low-temperature fluids and high-temperature fluids.For example, heating materials in food processing for sterilization, and cooling cutting fluid in machining to ensure machining accuracy.
Scope of Application
petrochemical industry
Used for heating crude oil, cooling oil products, and preheating and condensing chemical raw materials.Used for heating crude oil, cooling oil products, and preheating and condensing chemical raw materials
Coal chemical industry
In the processes of coal gasification and coal liquefaction, it is used for cooling coal gas, recovering waste heat, and regulating the temperature of process fluids. It can handle complex coal gas media containing dust and sulfur.
Metallurgical industry
Used for waste heat recovery from blast furnace gas, cooling of steelmaking cooling water, and heat exchange in non-ferrous metal smelting processes, adaptable to high-temperature and high-dust working environments.
power industry
Used for preheating feedwater in power plant boilers, heat exchange in steam turbine condensers, and heat recovery in industrial waste heat power generation systems, thereby improving the power generation efficiency of power plants.
Differences from ordinary plate heat exchangers
1.Structural differences
Spiral tube wound heat exchangeIt adopts a shell-and-tube structure, with a core of spirally wound heat exchange tubes housed in a cylindrical shell.In this type of heat exchanger, hot and cold fluids flow in the tube side and shell side respectively, making it a type of indirect heat exchanger.
ordinary plate heat exchanger It consists of a series of stacked thin metal plates, with sealed flow channels formed between the plates.Hot and cold fluids flow alternately in adjacent channels and exchange heat through plates. The structure is a plate-stacking form.
2.Structural differences
Spiral tube wound heat exchanger Due to its use of metal tubing and thick-walled shell structure, it has extremely strong temperature and pressure resistance.It can adapt to harsh operating conditions such as high temperature and high pressure, and ultra-low temperature, and performs excellently in heat exchange systems for high-pressure hydrogenation reactions.
ordinary plate heat exchanger The plates are sealed together by gaskets, and the material of the gaskets limits their temperature and pressure resistance.It can generally withstand a maximum temperature of about 180℃ and a maximum pressure of about 2.5MPa, making it unsuitable for high-temperature and high-pressure applications.
3.Differences in media adaptability
Spiral tube wound heat exchanger It has wide adaptability to various media and can handle fluids containing solid particles, high viscosity, and strong corrosiveness.It has strong resistance to fouling and corrosion, making it suitable for handling complex media in the chemical and metallurgical industries.
ordinary plate heat exchanger The narrow flow channels of the plates are easily clogged by solid particles, and the surface of the plates is susceptible to corrosion by corrosive media.It is more suitable for handling clean, low-viscosity fluids, such as tap water and lubricating oil.
4.Heat exchange efficiency and resistance difference
Spiral tube wound heat exchanger By enhancing turbulent flow, heat transfer efficiency is improved, resulting in a higher heat transfer coefficient, lower fluid resistance loss, and lower operating energy consumption.
ordinary plate heat exchanger The corrugated design on the plate surface also enhances heat transfer, resulting in a higher heat transfer coefficient when handling clean, low-viscosity fluids.However, the narrow flow channel results in high fluid resistance and relatively high power consumption.
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