Shell Heat Exchanger Inlet Relocation to Head
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Solution Overview
Problem
Conventional liquid-to-gas shell heat exchangers have limitations in diameter due to inlet aperture placement in the cylindrical shell, leading to uneven heating medium distribution and potential erosion, especially when using steam as the heating medium.
Innovation Solution
The design relocates the inlet aperture for the heating medium to the shell head, allowing for a larger diameter and even distribution by aligning with the orientation of free spaces, and incorporates an axially symmetrical cone-shaped deflector to prevent erosion and enhance flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inlet aperture for the heating medium is located in the cylindrical part of the shell, then the structure is simple, but the maximum diameter of the inlet aperture is limited
Solution Approach 1:
The inlet aperture is relocated from the cylindrical surface to the head (end cap) of the shell, utilizing a different spatial dimension. This allows the inlet aperture diameter to approach the full diameter of the shell, significantly increasing the maximum possible inlet size without adding structural complexity.
2Device complexity
If the inlet aperture for the heating medium is located in the cylindrical part of the shell, then the structure is simple, but multiple inlets are needed to supply larger amounts of heating medium
Solution Approach 1:
By positioning the inlet aperture in the head rather than the cylindrical surface, the design enables a single large-diameter inlet to supply sufficient heating medium volume, eliminating the need for multiple inlets and conduit branching while maintaining structural simplicity.
3Device complexity
If the heating medium enters perpendicular to the free space between the shell and conduit, then the inlet structure is simple, but the flow is broken immediately after entry
Solution Approach 1:
The inlet aperture in the head allows the heating medium to enter parallel to the longitudinal axis of the shell and conduits, aligning with the orientation of free spaces. This eliminates flow disruption while keeping the inlet structure simple, enabling smooth, even distribution throughout the exchanger.
4Device complexity
If the heating medium enters the inner space with high speed through a small inlet aperture, then the inlet structure is simple, but excessive erosion of the conduit occurs
Solution Approach 1:
Relocating the inlet to the head enables a large-diameter aperture that reduces heating medium velocity upon entry. This lowers kinetic energy and erosive impact on conduits while maintaining structural simplicity, preventing excessive erosion even with high-volume steam supply.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables efficient and even heating medium distribution without the need for multiple inlets or conduit branching, reducing erosion and improving heat exchange efficiency.
Implementation Method 1
The heating medium (usually gas, e.g. steam) ... interconnected through the medium conduit formed by a length-oriented bunch of pipes situated in the inner space of the exchanger ... heat exchange efficiency
Data Source
Figure 1a~2b
Figure 3a~3d
Figure 4~5
AI summary
The invention relates to a liquid-to-gas shell heat exchanger (1) containing an elongated shell (2), the central section of which (21) is on both sides closed by heads (22). In this shell (2) an inlet aperture (31) and an outlet aperture (32) for the heated medium are made, being mutually interconnected by a conduit (33) of the heated medium arranged in the inner space of the heat exchanger (1), whereby in this shell (2) an inlet aperture (41) and an outlet aperture (42) for the heating medium are also made. The inlet aperture (41) for the heating medium is created in the head (22) of the shell (2) of the heat exchanger (1).