Shell and Tube Heat Exchanger

Shell and tube Heat Exchanger operates based on three core principles: partition wall counter-current heat exchange, tube-shell dual chamber isolation, and turbulent enhanced heat transfer. Composed of shell, tube sheet, heat exchange tube bundle, heads and baffle plates, it forms two independent flow channels: one medium flows inside the tube bundle (tube side), the other flows reversely in the shell space outside the tube bundle (shell side). The two media are completely isolated and exchange heat efficiently only through metal tube walls to complete heating, cooling, condensation, waste heat recovery and other processes. With solid structure, stable pressure bearing, high temperature and corrosion resistance, large flow rate, it is a mainstream industrial heat exchange equipment certified by China Standardization Administration. As an original factory, AIX Boiler strictly follows Standardization Administration of China standards GB150, GB/T151, TSG21-2016, independently controlling design, manufacturing and testing to ensure safe, compliant, stable and durable products.

1. AIX Boiler Brand & Original Factory Core Advantages

AIX Boiler is a comprehensive chemical equipment manufacturer integrating R&D, design, production, installation, commissioning and EPC service, specializing in shell and tube heat exchangers, spiral plate heat exchangers, storage tanks, pressure vessels and other equipment. We have intelligent workshops, certified welding and NDT teams, complete forming and pressure testing equipment, realizing independent production from plate procurement and re-inspection, CNC cutting, rolling, tube sheet processing, tube expansion/welding, assembly, pressure test to finished product delivery without middlemen, providing higher cost performance and more controllable delivery time with the same quality. With years of deep cultivation in heat exchange equipment industry, our products have passed many authoritative tests, complying with Class I pressure vessel safety standards, adapting to strict working conditions in chemical, petroleum, food, pharmaceutical, light industry, metallurgy and other industries, serving thousands of enterprises nationwide, winning market trust with stable quality, professional technology and perfect service, becoming a trustworthy brand manufacturer in shell and tube heat exchanger field.

2. Working Principle & Structural Features

Shell and tube heat exchanger adopts fixed tube sheet, floating head, U-tube and other mature structures, with cold and hot media completely isolated without cross-contamination. Tube side for high-temperature gas/steam/liquid, shell side for cooling water/refrigerant/air; baffle plates force shell-side fluid to flow in S-shaped turbulence, greatly improving heat transfer efficiency. Made of 316L stainless steel, the equipment resists acid, alkali and chloride ion, high temperature resistant, hygienic and easy to clean, suitable for non-toxic, non-explosive, clean or low-corrosive media. AIX products are Class I pressure vessels with high structural strength, stable operation and simple maintenance. Single/multi-tube pass, single/multi-shell pass can be selected according to working conditions, supporting vertical/horizontal installation to meet heating, cooling, condensation, waste heat recovery and other process requirements.

3. Core Technical Parameters & Standards

4. Standard Model Parameter Table

5. Manufacturing Process & Quality Control

AIX Boiler implements full-process strict quality control for shell and tube heat exchangers: 1) Material control: selecting genuine 316L/304 stainless steel plates and seamless tubes with material certificates and re-inspection reports; 2) Precision processing: CNC drilling for tube sheets with high aperture accuracy and uniform tube bundle arrangement; 3) Tube expansion and welding: hydraulic expansion + argon arc welding for leak-free and high-strength bonding; 4) Baffle assembly: precise positioning and firm support to improve shell-side turbulence and heat transfer efficiency; 5) Pressure test: hydrostatic test and air tightness test item by item before delivery; 6) Surface treatment: internal & external polishing/pickling passivation to improve corrosion resistance and hygiene level; 7) NDT: 20% X-ray inspection for each weld joint of Class A & B, no less than 250mm, qualified per NB/T47013.1~5-2015 AB Grade III; 8) Penetration test: kerosene leak test after welding, no leakage qualified, surface NDT Level I qualified for the last circumferential weld of jacket cylinder and upper ring. Each equipment provides certificates, test reports and completion data to meet safety, environmental protection and food hygiene acceptance requirements.

6. Application Industries & Scenarios

AIX shell and tube heat exchangers are widely used:
1. Chemical: heating, cooling, condensation of organic acid, inorganic salt, alcohol, ester, solvent;
2. Petroleum: heating/cooling and condensation recovery of crude oil, oil products, oil and gas;
3. Food & Beverage: heat exchange of juice, syrup, dairy, edible oil, drinking water;
4. Pharmaceutical: heating, cooling and condensation of purified water, intermediates, liquid medicine, solvent;
5. Light & Textile: heat recovery and temperature control of dyeing water, process water, additives;
6. Metallurgy & Environmental Protection: circulating water, sewage, flue gas waste heat utilization, tail gas condensation;
7. HVAC & Industrial Systems: hot water heat exchange, steam condensation, waste heat recovery, cooling circulation systems.

7. OEM Customization & One-stop Service

As an original factory, AIX Boiler provides full-range customization: professional design scheme according to medium characteristics, temperature, pressure, flow, heat exchange area, installation space, nozzle position, structure; support fixed tube sheet, floating head, U-tube customization; optional flange, support, insulation layer, instrument interface, inlet & outlet valves; one-stop on-site installation, commissioning, acceptance, training and after-sales maintenance, undertaking EPC general contracting of heat exchange system to reduce customer cost and project risk.

8. Core Competitiveness & Advantages

Compared with plate and spiral plate heat exchangers, AIX shell and tube heat exchangers have outstanding advantages: 1) Higher temperature and pressure resistance, suitable for high temperature and high pressure working conditions; 2) Excellent 316L corrosion resistance, long service life and low leakage; 3) Simple and solid structure, low failure rate and maintenance cost; 4) Smooth flow channel, not easy to block, suitable for medium with a small amount of impurities; 5) Original factory direct supply with controllable quality, stable delivery and fast after-sales; 6) Compliant with Class I pressure vessel standards, complete qualifications and testing, smoothly passing various inspections; 7) Heat exchange area covers 0.5～500㎡, complete specifications, meeting all process needs from pilot test to mass production.

9. Purchase & Cooperation Process

For purchasing shell and tube heat exchangers, please provide: medium name, temperature, pressure, flow, required heat exchange area, material requirement, installation type, site conditions, interface specification. Our engineers provide scheme and quotation one-to-one. AIX Boiler adheres to quality first and integrity management. All products are delivered after strict testing, providing long-term technical support and spare parts supply. Welcome to visit our factory and discuss cooperation.

AIX Boiler – Professional Original Factory of Shell and Tube Heat Exchangers, Building Quality with Technology, Winning Trust with Service, Providing Safe, High-Efficiency, Durable and Cost-effective Heat Exchange Equipment and Total Solutions for Global Customers.