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Eight Inquiries Regarding Heat Exchangers

Eight Inquiries Regarding Heat Exchangers

1. What does test pressure signify? The test pressure is the pressure applied during the pressure test at the tube pass and shell pass. 2. Define design temperature. Design temperature is the set temperature of the element metal during normal operation of the heat exchanger. It is determined by the design load conditions and pressure. 3. How does a heat exchanger facilitate heating? In a typical wall heat exchanger, heat transfer primarily occurs through conduction and convection. The heat fluid...

Dec 25, 2020 Industrial News
Inquiries about Tube & Shell Passes, Working & Design Pressure of Heat Exchanger

Inquiries about Tube & Shell Passes, Working & Design Pressure of Heat Exchanger

1. What constitutes the tube pass and shell pass in a heat exchanger? The tube pass is the section of the heat transfer tube channel that facilitates the flow and connection of the medium. The shell pass is the portion of the channel where the medium flows around the exterior of the heat transfer tube, connecting with one another. 2. How is the count of tube passes and shell passes determined in a heat exchanger? The number of tube passes indicates how many times the medium moves back and forth...

Dec 07, 2020 Industrial News
What Constitutes the Nominal Diameter and Length of Heat Exchangers?

What Constitutes the Nominal Diameter and Length of Heat Exchangers?

What does the nominal diameter of heat exchangers signify? For coiled cylinder heat exchangers, the nominal diameter (DN) is determined by the inner diameter of the cylinder. In steel cylinder heat exchangers, the nominal diameter is based on the outer diameter of the steel tube. How is the nominal length of the heat exchanger defined? For straight heat exchange tubes, the length of the straight tube section becomes the nominal length (LN). In the case of U-shaped tubes, the nominal length (LN)...

Dec 02, 2020 Industrial News
What Is a Heat Exchanger and How Is Its Transfer Area Determined?

What Is a Heat Exchanger and How Is Its Transfer Area Determined?

What is a heat exchanger? A heat exchanger is a device designed to transfer heat from a hotter fluid to a cooler fluid. What is the heat transfer area of a heat exchanger? The heat transfer area is calculated as the outer surface area of the tube, considering the outer diameter and deducting the length that extends into the tube sheet. In U-tube heat exchangers, the area of the U-shaped bend is typically excluded.

Dec 02, 2020 Industrial News
Main Structural Types of Pressure Vessels and Their Classification

Main Structural Types of Pressure Vessels and Their Classification

1. What are the primary structural types of pressure vessels? Pressure vessels come in various structural forms, including spherical, cylindrical, box-shaped, and conical vessels. 2. What role do reaction pressure vessels play in production, and what are some common types? Reaction pressure vessels are essential for conducting physical and chemical reactions in the production process. Examples include reaction kettles, decomposition kettles, vulcanization tanks, decomposition towers, polymerization...

Nov 30, 2020 Industrial News
Alternative Methods of Classifying Pressure Vessels

Alternative Methods of Classifying Pressure Vessels

What Other Classification Methods Are There for Pressure Vessels? Categorized by vessel wall thickness: Containers are classified as thin-walled (wall thickness ≤ 1/10 of the inner diameter) or thick-walled. Based on shell geometry: Containers are grouped as spherical, cylindrical, or special-shaped. By manufacturing method: Containers are identified as steel structure, casting, or machining containers. Considering structural materials: Containers are classified as steel structure, cast...

Nov 30, 2020 Industrial News
How Pressure Vessels Are Classified in the Capacity Regulation

How Pressure Vessels Are Classified in the Capacity Regulation

To streamline safety management and regulatory oversight, the "Capacity Regulation" categorizes containers into three types based on pressure level, medium harm, and production role: Class I Pressure Vessels: Low-pressure vessels (excluding Class II and Class III). Class II Pressure Vessels: 1. Medium-pressure vessels (excluding Class III). 2. Low-pressure reaction and storage vessels with flammable or moderately hazardous media. 3. Low-pressure containers with extremely toxic and highly...

Nov 21, 2020 Industrial News
Classifying Pressure Vessels Based on the Principle of Action

Classifying Pressure Vessels Based on the Principle of Action

Following the operational principle in the manufacturing process, pressure vessels are categorized into reaction pressure vessels, heat exchange pressure vessels, separation pressure vessels, and storage pressure vessels. When a pressure vessel performs multiple functions simultaneously, it should be classified based on its predominant process function.

Oct 30, 2020 Industrial News
The Role of Heat Exchangers in Industrial Processes

The Role of Heat Exchangers in Industrial Processes

The Heat Exchanger Pressure Vessel is primarily utilized for medium heat exchange, encompassing devices like shell-and-tube waste heat boilers, heat exchangers, coolers, evaporators, heaters, and more. What are examples of typical heat exchange containers? In the production process, the Heat Exchanger Pressure Vessel facilitates medium heat exchange. It includes various containers such as tubular waste heat boilers, heat exchangers, coolers, condensers, evaporators, heating pots, disinfection pots,...

Oct 27, 2020 Industrial News
Categorizing Vessels by Pressure, Design Temperature, and Installation

Categorizing Vessels by Pressure, Design Temperature, and Installation

Pressure vessels can be classified based on various factors, including pressure-bearing methods, design temperature, and installation method. 1. Pressure-Bearing Methods: Pressure vessels are categorized into two major types based on pressure-bearing methods: (1) Internal Pressure Vessels: These containers have media pressure inside the shell. The design focuses on wall thickness determined by strength calculations. (1) External Pressure Vessels: These containers have media pressure outside the...

Oct 19, 2020 Industrial News
Categories of Pressure Vessels Based on Pressure Levels

Categories of Pressure Vessels Based on Pressure Levels

Pressure vessels are categorized based on pressure levels, which include low pressure, medium pressure, high pressure, and ultra-high pressure: Low Pressure Pressure Vessels(Code L): Pressure ranging from 0.1MPa to less than 1.6MPa. Medium Pressure Pressure Vessels(Code M): Pressure from 1.6MPa to less than 10MPa. High Pressure Pressure Vessels(Code H): Pressure from 10MPa to less than 100MPa. Ultra-High Pressure Pressure Vessels(Code U): Pressure equal to or exceeding 100MPa.

Oct 10, 2020 Industrial News
What are the Requirements that Pressure Vessels Must Fulfill?

What are the Requirements that Pressure Vessels Must Fulfill?

Pressure vessels must exhibit specific performance characteristics suitable for the process, ensuring safety, reliability, ease of manufacturing and installation, advanced structure, convenient maintenance, and economic rationality. The design of pressure vessels should adhere to the following criteria: (1) Strength: This pertains to the container's capacity to withstand pressure or other external loads without cracking or undergoing excessive deformation. (2) Stiffness: This refers to the container's...

Sep 21, 2020 Industrial News