Sanitary SS304 Or SS316L Heat Exchange Condenser Shell Heat Exchanger Stainless Steel Stainless Steel Heat Exchanger

^{DELLOK YONGHUI Sanitary SS304 or SS316L Heat Exchange Condenser shell heat exchanger stainless steel stainless steel heat exchanger}

Introduction

^{Shell and tube heat exchanger, also known as tube heat exchanger, is a widely used heat exchange equipment.}

^{Shell and tube heat exchanger is mainly composed of the following components:
Shell: mostly cylindrical, with internal tube bundles to provide a closed environment for the heat transfer process.
Heat transfer tube bundle: is the core component of the heat exchanger, determines the thermal performance of the heat exchanger, hot and cold fluids through which heat is exchanged.
Tube plate: used to fix the ends of the heat transfer tube bundle to ensure the stability of the bundle in the shell.
Folding plate (baffle): installed in the shell, used to change the direction of the shell process fluid, improve the flow rate, increase the degree of turbulence of the fluid flow, thereby enhancing the heat transfer effect.
Pipe boxes: located at both ends of the heat transfer bundle, used for connecting pipes and distributing fluids.}

Working principle

^{Shell and tube heat exchanger belongs to the inter-wall heat exchanger, its working principle is: tube and shell process through two different temperatures of the fluid, the higher temperature fluid through the wall of the heat exchanger tube heat transfer to the lower temperature fluid, the higher temperature fluid is cooled, the lower temperature fluid is heated to achieve the purpose of the process of two fluid heat transfer.}

The type and characteristics

^{Shell and tube heat exchanger has a variety of types, each type has its own unique characteristics and applicable occasions:}

^{Fixed tube and plate heat exchanger: simple structure, high pressure, but may produce large thermal stress, suitable for hot and cold fluid temperature difference is not occasions.
Floating head type heat exchanger: no thermal stress, between the tubes and tube cleaning is convenient, but the structure is relatively complex and costly. One end of the tube bundle of the tube plate can float freely, completely eliminating thermal stress; and the entire tube bundle can be extracted from the shell, easy mechanical cleaning and maintenance.}

U-shaped tube heat exchanger: each heat exchanger tube are bent into a U-shape, the two ends were fixed in the same tube plate up and down the two areas, with the help of the tube box partition into the import and export of the two rooms. This heat exchanger completely eliminates thermal stress, the structure is simpler than the floating head type, but the pipe process is not easy to clean. It is the only heat exchanger can be used for high temperature, high pressure, high temperature difference in the heat exchanger, suitable for shell and tube wall temperature difference is large or shell process media scaling need to be cleaned, and is not suitable for floating head type and fixed tube and plate occasions.
In addition, there are shell and tube with expansion joints steam - water heat exchanger, wave section type shell and tube steam - water heat exchanger, segmented water - water heat exchanger and other types. The main features of shell and tube heat exchanger include:

Simple structure: easy to manufacture and install.
Low cost: due to its simple structure, the manufacturing cost is relatively low.
Wide flow cross-section: helps to reduce pressure drop.
Easy scale cleaning: the design makes scale cleaning relatively easy.
Low heat transfer coefficient: limits its application to some extent.
Large footprint: due to structural characteristics.
Widely applicable: can be used for high temperature, high pressure and a variety of media heat exchange occasions.

Field of application

^{Shell and tube heat exchanger is widely used in industrial production due to its stable and energy-saving, compact structure, low maintenance costs and other characteristics. Specific application areas include:}

^{Oil and gas field: for heat recovery, cooling, heating, condensation, dehydration and re-cooking process, applicable to gas, light oil and heavy oil products.
Petrochemical sector: for condensation, heating, cooling, heat recovery and recooking processes, which can handle a wide range of organics.
Food industry: for heating and cooling processes of vegetable oils (e.g. palm oil).
Pharmaceutical and special chemical processes: for condensation and demisting processes, gas condensation processes for sanitary grades, recovery processes for water vapor and solvents, and cooling processes for ammonia synthesis.
HVAC, district heating: for circulating water heating processes, steam heating, heat recovery processes, etc.
Energy and other fields: such as the seed decomposition process in alumina production, etc.
Chemical production: as heaters, coolers, condensers, evaporators and reboilers, etc.
Domestic hot water supply: commonly used in hot water heating system, low-temperature water air-conditioning system and continuous hot water production process water.}

Selection and maintenance

^{In the selection of shell and tube heat exchanger, the following factors need to be considered:}

^{Heating area: according to the flow of hot and cold fluids, the initial and final temperature and the specific heat capacity of the fluid to determine.
Heat medium parameters: including the temperature and pressure of the fluid.
Pressure rating: the use of temperature and the connection conditions of the interface.
Flow rate control: the flow rate in the tube should take a moderate range to avoid too large or too small pressure drop and fluid viscosity effects.
In terms of maintenance, shell and tube heat exchangers require regular inspection, cleaning and repair to ensure their normal operation and prolong service life.}

FAQ

^{Q1: How can I prevent tube leaks in tube heat exchangers?
A1: Ways to prevent tube leakage include regular inspection of the tubes, replacement of damaged tubes, and anti-corrosion measures to extend the service life of the tubes.}

^{Q2: What are the precautions for routine maintenance of tubular heat exchangers?
A2: Precautions for routine maintenance of tube heat exchangers include regular inspection of the condition of the tubes and tubes and timely replacement of damaged parts; maintaining the cleanliness of the tubes and regular cleaning of deposits and dirt in the tubes; and paying attention to insulation and anticorrosion measures for the tubes and equipment.}

^{Q3:How to choose the suitable tube heat exchanger?
A3: Selecting a suitable tubular heat exchanger requires consideration of a number of factors, including operating conditions (such as temperature, pressure, fluid properties, etc.), heat transfer efficiency requirements, floor space limitations, and cost budget. When making a selection, you can consult a professional heat exchanger manufacturer or supplier to customize the selection according to specific needs.}