Coiled-tube heat exchanger series
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Product Introduction
Ametech has introduced a new energy‑efficient heat exchanger—the spiral‑wound tube heat exchanger—to meet market demand. Its design fundamentally departs from conventional tube‑type heat exchangers, featuring a unique bidirectional helical thread, optimized inter‑tube spacing, and a counter‑wound tube bundle configuration. These innovations significantly alter fluid flow dynamics, delivering excellent turbulence, reduced fouling tendencies, and high heat transfer film coefficients. The unit also exhibits a small temperature difference across the heat‑transfer surfaces and minimal external heat loss. It is highly efficient, energy‑saving, low‑noise, and environmentally friendly; with a compact structure, long design life, and high effective utilization of heat‑transfer area, it is widely employed in heat‑exchange processes across HVAC, chemical, pharmaceutical, food and beverage, textile, and other industries.
For various operating conditions, we have developed fixed-tube-sheet heat exchangers and detachable-shell-and-tube heat exchangers featuring uniform‑length heat exchange tubes and precisely engineered tube‑to‑baffle spacings. These designs generate intense turbulence as the process fluids flow through both the tube side and the shell side, significantly enhancing heat transfer efficiency. The resulting heat transfer capacity is 37 times that of conventional heat exchangers, with a heat transfer coefficient reaching up to 14,000 W/m²·K. Moreover, fouling and scaling are minimized, reducing the likelihood of impurity deposition and scale formation.
Spiral-wound tube‑type construction: completely eliminates pull‑out forces between the heat exchange tubes and the tube sheet, significantly extending service life. For the same heat transfer capacity, its footprint is approximately one‑tenth that of a conventional heat exchanger, helping you conserve valuable space.
Workflow
A wound‑type heat exchanger is constructed by alternately winding heat transfer tubes in a helical pattern within the space between the inner and outer cylinders. The helical directions of adjacent layers of heat transfer tubes are opposite, and spacers of a specific shape are used to maintain a consistent gap, as shown in the figure.
The wound tube can be manufactured by winding a single strand, or by assembling two or more strands into a welded bundle and then winding them together. A single fluid may flow through the tube, resulting in a single‑pass wound‑tube heat exchanger, as shown in Figure (a).
Workflow Diagram
App Features
Spiral-wound heat exchangers are widely used in the pharmaceutical, HVAC, food, and textile industries—particularly in heating, cooling, and condensation processes within the production of products for pharmaceuticals, fine chemicals, and food and beverage applications. Ametek heat exchangers offer a comprehensive range of specifications and a broad spectrum of applications, capable of meeting diverse process requirements.
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Six Key Performance Advantages
Product Advantages
Compared with traditional heat exchangers:
Energy-saving analysis
Benefits of increased solvent recovery rate:
Taking an 800 kg/h ethanol distillation at atmospheric pressure as an example, assuming 8 hours of operation per day and 300 operating days per year, the economic benefit resulting from a one-percentage-point increase in solvent recovery rate is:
1% × 800 kg/h × 8 h/d × 300 d/n × 4 yuan/kg = 76,800 yuan
Benefits of using circulating water in place of low-temperature refrigerants:
Specification and Model
Product Model Meaning:
Schematic diagram of the appearance:
Technical Specifications
Reference model and external dimensions of the Φ8 helical wound-tube heat exchanger:
Reference model and external dimensions of the Φ10 helical wound-tube heat exchanger:
Reference parameters for the model and external dimensions of the Φ12 spiral-wound tube heat exchanger:
Reference model and external dimensions of the Φ14 spiral-wound tube heat exchanger:
Note: In addition to the standard model specified herein, the connection flanges, materials, and other parameters may also be designed in accordance with customer requirements.
Customized design
Ametech’s expert technical and process team, combined with years of experience in the R&D and manufacturing of heat exchangers and pressure vessels, is capable of providing customized designs tailored to customer requirements.
Customized Services
Packaging and Shipping
Factory quotation
Customer Order
Factory production
Quality Inspection
Packaging and Shipping
Frequently Asked Questions
Precautions for Shutting Down a Plate Heat Exchanger
When shutting down the heat exchanger, first slowly close the hot-side inlet valve, then slowly close the cold-side inlet valve, and finally close both the cold- and hot-side outlet valves. After all valves are closed, stop the pump; if necessary, open the drain valve.
Precautions for Starting a Plate Heat Exchanger
Inspect the clamping bolts and tighten them to the specified torque, ensuring even diagonal tightening. Verify that the inlet and outlet valves and the vent valve are in good condition and that all instruments are functioning properly. During startup, vent the system first, then introduce the cold medium before introducing the high‑temperature medium. Gradually open the inlet and outlet valves while carefully controlling the pressure differential between the two sides.
Precautions for Disassembling Plate Heat Exchangers
Before dismantling the plate heat exchanger, the clamping dimensions shall be measured and recorded. L; Loosen the clamping bolts alternately in a diagonal sequence.
Precautions for Storing Plate Heat Exchangers
Plate heat exchangers should be stored in a dry, well-ventilated warehouse, with the ambient temperature not exceeding 45 °C 。
When a plate heat exchanger has been out of service for more than six months, the internal fluid must be completely drained. It is advisable to loosen the clamping bolts in advance to ensure that the gap between the two clamping plates reaches 1.2 times L is recommended; clamp it to L when in use.
Causes of Leakage in Plate Heat Exchangers
1) Gasket aging; 2) System overpressure; 3) Loose clamping bolts causing external leakage; 4) Plate corrosion leading to internal leakage.
What are the characteristics of a plate heat exchanger?
Ametech has introduced advanced technologies and design principles, placing user reliability and optimal operational performance at the core, to maximize heat exchange efficiency and minimize energy losses. Ametech has introduced advanced technologies and design principles, placing user reliability and optimal operational performance at the core, to maximize heat exchange efficiency and minimize energy losses.
Coiled-tube heat exchanger series
If you require a customized product, please…Contact us!
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