Spiral Plate Heat Exchanger
Hengshui Chiyue Technology Co., LTD., located in Jingxian, Hengshui City, Hebei Province, is a high-tech enterprise focusing on the research and development and production of plate heat exchanger gaskets. The park where the company is located has been rated as "Hebei Rubber and Plastic Industry Private Science and Technology Park", with perfect industrial supporting facilities and convenient logistics network. After more than 20 years of development, the company has become a well-known rubber gasket supplier at home and abroad, the products are exported to Europe and the United States market, well received by customers. The company has strong technical strength, has a number of professionals engaged in gasket R & D and production, and passed ISO9001:2015 quality management system certification, established a perfect quality control system.
Why Choose Us
High Quality
We produce rubber gaskets, covering a variety of specifications and models, can meet the needs of most heat exchanger brands at home and abroad. The rubber material independently developed by the company has excellent temperature resistance and medium resistance, and the product has high pressure and good market performance.
Professional Team
The company has strong technical strength, has a number of professionals engaged in gasket R & D and production, and passed ISO9001:2015 quality management system certification, established a perfect quality control system.
Production Market
Products are exported to Europe and the United States and other international markets, the annual output of more than 1 million, has been widely recognized by customers around the world. With high-quality products and services, the company has established a good brand image in the international market, and its performance has grown steadily.
Our Service
Professional marketing team in-depth understanding of customer needs, to provide customized solutions.
Strictly monitor the production process to ensure product quality.
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The spiral plate heat exchanger is made by rolling two long metal plates around a center core to form two concentric spiral flow passages, one for each fluid. The plate edges are welded shut so that each fluid stays within its own passage and there is no flow bypassing or intermixing. Channel plate width and spacing (gap between plates) are optimized for the specified duty, maximum heat transfer, and ease of access. The plate gap is maintained by welded spacer studs although some designs do not require them.
Spiral plate heat exchanger look something like this. We have a flange inlet on the front face with the outlet located on the top, then we have an inlet from another fluid. Also on the top with the located on the rear face behind the end plates we find two sheets of metal inside which spiral together around the interior to form a channel which the fluids will now flow through the channel completely separates the two fluids
Benefits of Spiral Plate Heat Exchanger
High Thermal Efficiency
Single and long curving flow passages with a uniform rectangular cross-section ensure superior flow distribution, intense turbulence, and high heat transfer coefficients (50-100% greater than shell & tubes).
Self-Cleaning Passages
The spiral's single-flow passages induce high shear rates that scrub away deposits as they form. This self-cleaning effect reduces fouling and makes spiral heat exchangers ideal for handling tough fluids such as process slurries, sludge, and media with suspended solids or fibers.
Countercurrent or Co-current
Spiral heat exchangers normally operate in true countercurrent flow for close approaches and temperature crosses. Occasionally a co-current flow design has major benefits, especially in cooling or heating fluids prone to gelation, burn-on, freezing or similar skin temperature related fouling.
Small Footprint & Easy Access
The spiral heat exchanger is compact and requires minimal space for installation and servicing. Removable covers provide easy access to interior heat transfer surfaces for field inspections, routine maintenance, or manual cleaning if required.
The primary application of spiral plate heat exchangers is in the chemical and petrochemical industries. Here, they are used in a wide range of processes, including heating and cooling, condensation, and evaporation.
For example, in the chemical industry, SPHEs are extensively used in distillation columns, where they are used to preheat and cool the feed and product streams. Similarly, in the petrochemical industry, SPHEs are used in refineries to heat or cool the crude oil and separate the various components using distillation.
Another common application of spiral plate heat exchangers is in the food and beverage industry. Here, they are used for a variety of tasks, including pasteurization, sterilization and evaporation. For example, in the dairy industry, SPHEs are used to pasteurize milk and other dairy products, while in the fruit juice industry, SPHEs are used for juice concentration and evaporation. They are also used for heat recovery in these industries, which help in reducing the overall energy consumption and cost.
Spiral plate heat exchangers are also used in the HVAC (Heating, Ventilation, and Air-Conditioning) industry. Typically, these exchangers are used in large commercial and industrial buildings that require efficient heating and cooling systems. In such systems, the SPHEs are used to transfer heat between the building’s HVAC system and the outside air or water systems. They are also used in geothermal heating and cooling systems, which use the earth’s natural underground temperature to transfer heat and cool the building.
The pharmaceutical and biotech industries are another area where spiral plate heat exchangers are widely used. Here, they are used for sterilization, purification, and fermentation. In these industries, it is essential to maintain a sterile environment, and spiral plate heat exchangers can help achieve this by providing a high level of heat transfer efficiency without contaminating the process.
Spiral Plate Heat Exchanger Structure and Performance
Spiral plate heat exchanger is suitable for: gas-gas, liquid-liquid, gas-liquid convection heat transfer, can be used for steam condensation and liquid evaporation heat transfer, chemical industry, petroleum, medicine, machinery, electricity, light industry and textile industries Optional.
Spiral plate heat exchanger is rolled from two steel plates, forming two uniform spiral channels. The two heat transfer media can be fully countercurrent flow, suitable for small temperature difference heat transfer, easy to recover low temperature heat source and accurately control the outlet temperature .
The nozzle on the shell is tangential structure, the local resistance is small, the curvature of the spiral channel is uniform, the fluid flow in the device does not have a large reversal, and the total resistance is small, so the design flow rate can be increased to make it more competitive High heat transfer capacity.
The end face of the spiral channel is welded and sealed, with good sealing performance and reliable structure.
It is not easy to overhaul, especially when the internal board has problems, it is extremely difficult to repair. Some factories remove all the welding seams at both ends of spiral plate heat exchanger, re-flatten the board, weld it again, and then roll it. Anti-corrosion of plate heat exchanger is very important.
Mechanical cleaning is not possible. The production practice has proved that the spiral plate heat exchanger is not easy to block compared with the general tube heat exchanger, especially the suspended particles and impurities such as sand and small shells are not easy to deposit in the spiral channel. Analyze the reasons: First, because it is a single channel impurity, the deposit in the channel will form a circulating circulation will increase to wash it away; second, because there is no dead angle in the spiral channel, the impurities are easily washed out.
Because there is a fixed column spacing in the spiral channel, the fibrous impurities (cotton yarn, grass sticks, leaves, etc.) are not allowed to enter the heat exchanger.
Strictly control the cooling water outlet temperature below the scale temperature.
The common cleaning method is to use steam to blow clean or alkali wash, the steam is blown to take over, and the impurities are blown out from spiral plate heat exchanger.
Operating Principles of Spiral Plate Heat Exchanger
Counterflow and Parallel Flow Mechanisms
Spiral plate heat exchanger operate on the principles of counterflow and parallel flow. In counterflow, the hot and cold fluids flow in opposite directions, maximizing the temperature difference across the heat exchanger. This results in efficient heat transfer and a high degree of temperature uniformity within the fluids.
Parallel flow, on the other hand, involves both fluids moving in the same direction. While this may result in a lower temperature difference, it is useful in cases where precise temperature control is required.
Heat Transfer Mechanisms
Heat transfer within spiral plate heat exchanger occurs through conduction and convection. Conduction involves the transfer of heat through direct contact between adjacent layers of the spiral coils. Convection, in contrast, relies on the fluid’s movement to carry heat from one point to another. The turbulent flow patterns created by the spiral channels enhance convection, further improving heat transfer efficiency.
Fluid Dynamics and Pressure Drop
The design of spiral plate heat exchanger promotes turbulent flow, which enhances heat transfer but also leads to increased pressure drop. The pressure drop across the heat exchanger depends on factors such as fluid viscosity, flow rates, and the geometry of the channels. Engineers must carefully consider these factors during the design phase to ensure optimal performance and efficient energy usage.
Spiral Plate Heat Exchanger Repair of internal leakage
Digging holes
After the location of the internal leakage point is determined, the hole is cut from the place where the outermost layer of the heat exchanger corresponds to the leakage point, and the sequence is from outside to inside, until the layer with the internal leakage point until. The cut holes should be oval, and the size of the outer layer is large, and it gradually decreases inward. Generally, the size of the holes on each layer of the board differs by 40mm. If the location of the leakage point is deeper, the hole cut in the outer layer should be larger.
Slag removal
After cutting the holes, the oxide slag remaining on each layer should be carefully cleaned. This is whether the replenishment board and each layer of spiral board can be firmly welded when welding the rework board. The key is to clean the oxidized slag with a chisel and a small hand grinding wheel for trimming the mold. Take care to remove the cleaned slag as much as possible and not let it fall into the heat exchanger.
Equipped with replenishment plate
In order to ensure the quality of repair, the sheet material cut from each layer of the heat exchanger is no longer used, and the replenishment plate is reconfigured. The additional replenishment plate should be used with the heat exchanger spiral plate For the same material and plate thickness, the periphery should be 15mm to 20mm larger than the holes cut in each layer of the heat exchanger, and they are also elliptical, and they are made into an arc shape that is consistent with the curvature of the spiral plate of each layer of the heat exchanger.
Welding internal leakage point and refill board
A short round steel brace is also welded between each layer of back-up plates (mainly to increase the mutual stiffness of the oval-shaped back-up plates). The number of short round steel braces welded on each layer of the repair board is determined by the size of the repair board. Generally, 23 are welded on the outer layers of the slightly larger layers, and 1 ~ on the inner layer. 2.
In welding, it should be done. After welding each layer of elliptical backing plate, the welding position should be carefully checked. If there is sand hole, repair welding should be performed to ensure the welding quality of each layer.
Spiral Plate Heat Exchanger The structure typically consists of
Spiral-shaped tubes or plates
The spirals are the main component of these heat exchangers. They provide the flow path for the two fluids to transfer heat. Various materials such as metal, plastic, or composites are used to make spirals.
Casing
The casing provides support and protection for the spirals. It also helps to contain the fluids within the heat exchanger. It is typically made from metal, such as stainless steel, or composite material.
Connections
The inlet and outlet of the two fluids are connected to the spirals via connections. It can be flanged, threaded, or welded, depending on the specific design and application.
Gaskets or seals
Gaskets or seals are used to prevent fluid leakage between the casing and the spirals. They are typically made from elastomers, such as rubber or silicone.
Separator
The separator is used to prevent the two fluids from mixing. It ensures that the heat transfer process occurs only between the two fluids. The separator can be a tube sheet, a baffle plate, or a spiral separator, depending on the specific design.
Comparing Spiral Heat Exchangers to Other Types
In the domain of heat exchangers, distinct configurations cater to specific operational needs. Among these, spiral heat exchangers present a unique proposition. Unlike conventional plate and shell & tube exchangers, spirals excel in compactness without compromising thermal efficiency. Their helical structure allows for substantial heat exchange within a confined footprint, making them particularly suitable for space-constrained environments.
Moreover, spiral heat exchangers demonstrate superior thermal efficiency. The spiral geometry induces turbulence in fluid flow, ensuring optimal contact between mediums. Consequently, these devices achieve heightened thermal transfer rates, surpassing many conventional designs. Additionally, their continuous flow configuration mitigates fouling and scaling, minimizing maintenance demands and ensuring consistent performance, particularly pertinent when dealing with potentially fouling fluids.
In practical terms, spiral heat exchangers stand out for their space-saving attributes. Relative to their shell and tube counterparts, they necessitate less floor space for installation. Their circular configuration and compact dimensions render them an appealing choice in scenarios where spatial optimization is imperative. Additionally, their efficacy in heat transfer contributes to noteworthy energy savings, translating to long-term cost-effectiveness.
While plate and shell & tube exchangers have their respective merits, spiral heat exchangers carve a niche in applications necessitating compactness, heightened thermal efficiency, and reduced maintenance. Their unique design renders them indispensable across a spectrum of industries.
Our Factory
Our factory covers an extensive area and is equipped with advanced production equipment, including 14 flat vulcanizing machines, and the maximum heating plate size can be adapted to various production requirements. The company has more than 750 sets of molds of various models, which can meet the specifications of most heat exchanger brands in the market.
Our Certificate
FAQ
Q: What are the different kinds of spiral plate heat exchangers?
Q: How effective is spiral heat exchanger?
Q: What are the advantages of a spiral plate heat exchanger?
Q: What is the formula for the spiral heat exchanger?
Q: What is the inside of a spiral heat exchanger?
Q: What is the working principle of spiral plate heat exchanger?
Q: How do you calculate the design of a spiral heat exchanger?
Q: How effective is spiral heat exchanger?
Q: What are the applications of spiral tube heat exchanger?
Q: How does a spiral plate heat exchanger work?
Q: What are the components of a spiral heat exchanger?
Q: How are spiral plate heat exchangers different from plate and frame heat exchangers?
Operation: Plate and frame heat exchangers allow for easy access to the plates for cleaning, but spiral plate heat exchangers are more compact and can handle fluids with solids better.
Maintenance: Plate and frame heat exchangers can be more easily maintained, as the plates can be individually removed and cleaned.
Q: How do I select the right spiral plate heat exchanger for my application?
Q: Can spiral plate heat exchangers handle high-pressure fluids?
Q: How do I maintain a spiral plate heat exchanger?
Q: Are spiral plate heat exchangers suitable for corrosive fluids?
Q: What is the expected lifespan of a spiral plate heat exchanger?
Q: Are there any specific safety considerations when using spiral plate heat exchangers?
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